SN74ALS620A, SN74ALS621A, SN74ALS623A, SN74AS623
OCTAL BUS TRANSCEIVERS
SDAS226A – DECEMBER 1982 – REVISED JANUARY 1995
Copyright 1995, Texas Instruments Incorporated
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
•Local Bus-Latch Capability
•Choice of True or Inverting Logic
•Package Options Include Plastic
Small-Outline (DW) Packages and Standard
Plastic (N) 300-mil DIPs
DEVICE OUTPUT LOGIC
SN74ALS620A 3 state Inverting
SN74ALS621A Open collector T rue
SN74ALS623A, SN74AS623 3 state T rue
description
These octal bus transceivers are designed for asynchronous two-way communication between data buses. The
control-function implementation allows for maximum flexibility in timing.
These devices allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending
upon the logic levels at the output-enable (OEAB and OEBA) inputs.
The output-enable inputs disable the device so that the buses are effectively isolated. The dual-enable
configuration gives the transceivers the capability to store data by simultaneously enabling OEAB and OEBA .
Each output reinforces its input in this transceiver configuration. When both OEAB and OEBA are enabled and
all other data sources to the two sets of bus lines are in the high-impedance state, both sets of bus lines (16 total)
remain at their last states. The 8-bit codes appearing on the two sets of buses are identical for the
SN74ALS621A, SN74ALS623A, and SN74AS623 or complementary for the SN74ALS620A.
The -1 versions of the SN74ALS620A and SN74ALS621A are identical to the standard versions, except that
the recommended maximum IOL is increased to 48 mA in the -1 versions.
The SN74ALS620A, SN74ALS621A, SN74ALS623A, and SN74AS623 are characterized for operation from
0°C to 70°C.
FUNCTION TABLE
INPUTS OPERATION
OEBA OEAB SN74ALS620A SN74ALS621A
SN74ALS623A
SN74AS623
L L B data to A bus B data to A bus
HHA data to B bus A data to B bus
H L Isolation Isolation
L H B data to A bus,
A data to B bus B data to A bus,
A data to B bus
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OEAB
A1
A2
A3
A4
A5
A6
A7
A8
GND
VCC
OEBA
B1
B2
B3
B4
B5
B6
B7
B8
DW OR N PACKAGE
(TOP VIEW)
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
SN74ALS620A, SN74ALS621A, SN74ALS623A, SN74AS623
OCTAL BUS TRANSCEIVERS
SDAS226A – DECEMBER 1982 – REVISED JANUARY 1995
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic symbols†
2
EN1
19
EN2
1
OEAB
2
A1 B1
18
OEBA
1
SN74ALS620A
2
EN1
19
EN2
1
OEAB
2
A1
3
A2
B1
18
4
A3 5
A4 6
A5 7
A6 8
A7 9
A8
B2
17
B3
16
B5
14 B4
15
B6
13
B8
11 B7
12
OEBA
1
SN74ALS621A
2
EN1
19
EN2
1
OEAB
2
A1
3
A2
B1
18
4
A3 5
A4 6
A5 7
A6 8
A7 9
A8
B2
17
B3
16
B5
14 B4
15
B6
13
B8
11 B7
12
OEBA
1
SN74ALS623A, SN74AS623
3
A2 B2
17
4
A3 B3
16
5
A4 B4
15
6
A5 B5
14
7
A6 B6
13
8
A7 B7
12
9
A8 B8
11
†These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
SN74ALS620A, SN74ALS621A, SN74ALS623A, SN74AS623
OCTAL BUS TRANSCEIVERS
SDAS226A – DECEMBER 1982 – REVISED JANUARY 1995
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic diagrams (positive logic)
A1 B1
To Seven Other T ransceivers
OEBA
OEAB
19
1
18
2
SN74ALS620A SN74ALS621A
SN74ALS623A, SN74AS623
A1 B1
OEBA
OEAB
19
1
182
To Seven Other T ransceivers
A1 B1
To Seven Other T ransceivers
OEBA
OEAB
19
1
18
2
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI: All inputs 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O ports 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: SN74ALS620A, SN74ALS623A 0°C to 70°C. . . . . . . . . . . . . . . . .
Storage temperature range –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only , and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may af fect device reliability.
SN74ALS620A, SN74ALS621A, SN74ALS623A, SN74AS623
OCTAL BUS TRANSCEIVERS
SDAS226A – DECEMBER 1982 – REVISED JANUARY 1995
4POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions
SN74ALS620A
SN74ALS623A UNIT
MIN NOM MAX
VCC Supply voltage 4.5 5 5.5 V
VIH High-level input voltage 2 V
VIL Low-level input voltage 0.8 V
IOH High-level output current –15 mA
IOL Low-level output current 24 mA
TAOperating free-air temperature 0 70 °C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER TEST CONDITIONS SN74ALS620A
SN74ALS623A UNIT
MIN TYP†MAX
VIK VCC = 4.5 V, II = –18 mA –1.2 V
VCC = 4.5 V to 5.5 V, IOH = –0.4 mA VCC –2
VOH
VCC =45V
IOH = –3 mA 2.4 3.2 V
V
CC =
4
.
5
V
IOH = –15 mA 2
VOL
VCC =45V
IOL = 12 mA 0.25 0.4
V
V
OL
V
CC =
4
.
5
V
IOL = 24 mA‡0.35 0.5
V
II
Control inputs
VCC =55V
VI = 7 V 0.1
mA
I
IA or B ports
V
CC =
5
.
5
V
VI = 5.5 V 0.1
mA
IIH
Control inputs
VCC =55V
VI=27V
20
µA
I
IH A or B ports§
V
CC =
5
.
5
V
,
V
I =
2
.
7
V
20 µ
A
IIL
Control inputs
VCC =55V
VI=04V
–0.1
mA
I
IL A or B ports§
V
CC =
5
.
5
V
,
V
I =
0
.
4
V
–0.1
mA
IOVCC = 5.5 V, VO = 2.25 V –30 –112 mA
Outputs high 24 34
SN74ALS620A VCC = 5.5 V Outputs low 31 44
ICC
Outputs disabled 33 47
mA
I
CC Outputs high 32 43
mA
SN74ALS623A VCC = 5.5 V Outputs low 39 50
Outputs disabled 42 55
†All typical values are at VCC = 5 V, TA = 25°C.
‡Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V
§For I/O ports, the parameters IIH and IIL include the off-state output current.
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
SN74ALS620A, SN74ALS621A, SN74ALS623A, SN74AS623
OCTAL BUS TRANSCEIVERS
SDAS226A – DECEMBER 1982 – REVISED JANUARY 1995
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics (see Figure 1)
PARAMETER FROM
(INPUT) TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
R1 = 500 Ω,
R2 = 500 Ω,
TA = MIN to MAX†UNIT
SN74ALS620A SN74ALS623A
MIN MAX MIN MAX
tPLH
A
B
210 2 13
ns
tPHL
A
B
2 10 3 11
ns
tPLH
B
A
210 2 13
ns
tPHL
B
A
2 10 3 11
ns
tPZH
OEBA
A
317 5 22
ns
tPZL
OEBA
A
525 5 22
ns
tPHZ
OEBA
A
2 12 2 16
ns
tPLZ
OEBA
A
318 2 19
ns
tPZH
OEAB
B
318 5 22
ns
tPZL
OEAB
B
525 5 22
ns
tPHZ
OEAB
B
2 12 2 16
ns
tPLZ
OEAB
B
318 2 19
ns
†For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡
Supply voltage, VCC 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI: All inputs and I/O ports 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: SN74ALS621A 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
‡Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only , and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may af fect device reliability.
recommended operating conditions
SN74ALS621A
UNIT
MIN NOM MAX
UNIT
VCC Supply voltage 4.5 5 5.5 V
VIH High-level input voltage 2 V
VIL Low-level input voltage 0.8 V
VOH High-level output voltage 5.5 V
IOL
Low level out
p
ut current
24 mA
I
OL
Lo
w-
le
v
el
o
u
tp
u
t
c
u
rrent
48§mA
TAOperating free-air temperature 0 70 °C
§Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V
SN74ALS620A, SN74ALS621A, SN74ALS623A, SN74AS623
OCTAL BUS TRANSCEIVERS
SDAS226A – DECEMBER 1982 – REVISED JANUARY 1995
6POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN74ALS621A
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP†MAX
UNIT
VIK VCC = 4.5 V, II = –18 mA –1.5 V
IOH VCC = 4.5 V, VOH = 5.5 V 0.1 mA
VOL
VCC =45V
IOL = 24 mA 0.35 0.5
V
V
OL
V
CC =
4
.
5
V
IOL = 48 mA‡0.35 0.5
V
II
Control inputs
VCC =55V
VI = 7 V 0.1
mA
I
IA or B ports
V
CC =
5
.
5
V
VI = 5.5 V 0.1
mA
IIH
Control inputs
VCC =55V
VI=27V
20
µA
I
IH A or B ports§
V
CC =
5
.
5
V
,
V
I =
2
.
7
V
20 µ
A
IIL
Control inputs
VCC =55V
VI=04V
–0.1
mA
I
IL A or B ports§
V
CC =
5
.
5
V
,
V
I =
0
.
4
V
–0.1
mA
ICC
VCC =55V
Outputs high 29 40
mA
I
CC
V
CC =
5
.
5
V
Outputs low 35 48
mA
†All typical values are at VCC = 5 V, TA = 25°C.
‡Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V
§For I/O ports, the parameters IIH and IIL include the off-state output current.
switching characteristics (see Figure 1)
PARAMETER FROM
(
INPUT
)
TO
(
OUTPUT
)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 680 Ω,
TA = MIN to MAXUNIT
(INPUT)
(OUTPUT)
SN74ALS621A
MIN MAX
tPLH
A
B
10 33
ns
tPHL
A
B
5 20
ns
tPLH
B
A
10 33
ns
tPHL
B
A
5 20
ns
tPLH
OEBA
A
10 39
ns
tPHL
OEBA
A
12 35
ns
tPLH
OEAB
B
10 39
ns
tPHL
OEAB
B
12 35
ns
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
SN74ALS620A, SN74ALS621A, SN74ALS623A, SN74AS623
OCTAL BUS TRANSCEIVERS
SDAS226A – DECEMBER 1982 – REVISED JANUARY 1995
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI: All inputs 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O ports 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: SN74AS623 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only , and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may af fect device reliability.
recommended operating conditions
SN74AS623
UNIT
MIN NOM MAX
UNIT
VCC Supply voltage 4.5 5 5.5 V
VIH High-level input voltage 2 V
VIL Low-level input voltage 0.8 V
IOH High-level output current –15 mA
IOL Low-level output current 64 mA
TAOperating free-air temperature 0 70 °C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN74AS623
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP‡MAX
UNIT
VIK VCC = 4.5 V, II = –18 mA –1.2 V
VCC = 4.5 V to 5.5 V, IOH = –2 mA VCC –2
VOH
VCC =45V
IOH = –3 mA 2.4 3.2 V
V
CC =
4
.
5
V
IOH = –15 mA 2
VOL VCC = 4.5 V, IOL = 64 mA 0.35 0.55 V
II
Control inputs
VCC =55V
VI = 7 V 0.1
mA
I
IA or B ports
V
CC =
5
.
5
V
VI = 5.5 V 0.1
mA
IIH
Control inputs
VCC =55V
VI=27V
20
µA
I
IH A or B ports§
V
CC =
5
.
5
V
,
V
I =
2
.
7
V
70 µ
A
IIL
Control inputs
VCC =55V
VI=04V
–0.5
mA
I
IL A or B ports§
V
CC =
5
.
5
V
,
V
I =
0
.
4
V
–0.75
mA
IOVCC = 5.5 V, VO = 2.25 V –30 –150 mA
Outputs high 57 93
ICC VCC = 5.5 V Outputs low 16 189 mA
Outputs disabled 71 116
‡All typical values are at VCC = 5 V, TA = 25°C.
§For I/O ports, the parameters IIH and IIL include the off-state output current.
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
SN74ALS620A, SN74ALS621A, SN74ALS623A, SN74AS623
OCTAL BUS TRANSCEIVERS
SDAS226A – DECEMBER 1982 – REVISED JANUARY 1995
8POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics (see Figure 1)
PARAMETER FROM
(INPUT) TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
R1 = 500 Ω,
R2 = 500 Ω,
TA = MIN to MAX†UNIT
SN74AS623
MIN MAX
tPLH
A
B
1 9
ns
tPHL
A
B
1 8
ns
tPLH
B
A
1 9
ns
tPHL
B
A
1 8.5
ns
tPZH
OEBA
A
211
ns
tPZL
OEBA
A
210
ns
tPHZ
OEBA
A
1 7.5
ns
tPLZ
OEBA
A
111.5
ns
tPZH
OEAB
B
211.5
ns
tPZL
OEAB
B
211
ns
tPHZ
OEAB
B
1 7
ns
tPLZ
OEAB
B
1 9
ns
†For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
SN74ALS620A, SN74ALS621A, SN74ALS623A, SN74AS623
OCTAL BUS TRANSCEIVERS
SDAS226A – DECEMBER 1982 – REVISED JANUARY 1995
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
SERIES 54ALS/74ALS AND 54AS/74AS DEVICES
tPHZ
tPLZ
tPHL tPLH
0.3 V
tPZL
tPZH
tPLH tPHL
LOAD CIRCUIT
FOR 3-STATE OUTPUTS
From Output
Under Test Test
Point
R1
S1
CL
(see Note A)
7 V
1.3 V
1.3 V1.3 V
3.5 V
3.5 V
0.3 V
0.3 V
th
tsu
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
Timing
Input
Data
Input
1.3 V 1.3 V 3.5 V
3.5 V
0.3 V
0.3 V
High-Level
Pulse
Low-Level
Pulse
tw
VOLTAGE WAVEFORMS
PULSE DURATIONS
Input
Out-of-Phase
Output
(see Note C)
1.3 V 1.3 V
1.3 V1.3 V
1.3 V 1.3 V
1.3 V1.3 V
1.3 V
1.3 V
3.5 V
3.5 V
0.3 V
0.3 V
VOL
VOH
VOH
VOL
Output
Control
(low-level
enabling)
W aveform 1
S1 Closed
(see Note B)
W aveform 2
S1 Open
(see Note B)
[
0 V
VOH
VOL
[
3.5 V
In-Phase
Output
0.3 V
1.3 V 1.3 V
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
R2
VCC
RL
Test
Point
From Output
Under Test
CL
(see Note A)
LOAD CIRCUIT
FOR OPEN-COLLECTOR OUTPUTS
LOAD CIRCUIT FOR
BI-STATE
TOTEM-POLE OUTPUTS
From Output
Under Test Test
Point
CL
(see Note A) RL
RL = R1 = R2
NOTES: A. CL includes probe and jig capacitance.
B. W aveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
W aveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. When measuring propagation delay items of 3-state outputs, switch S1 is open.
D. All input pulses have the following characteristics: PRR ≤ 1 MHz, tr = tf = 2 ns, duty cycle = 50%.
E. The outputs are measured one at a time with one transition per measurement.
Figure 1. Load Circuits and Voltage Waveforms
PACKAGING INFORMATION
Orderable Device Status (1) Package
Type Package
Drawing Pins Package
Qty Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
SN74ALS620ADW ACTIVE SOIC DW 20 25 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS620ADWE4 ACTIVE SOIC DW 20 25 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS620ADWG4 ACTIVE SOIC DW 20 25 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS620ADWR OBSOLETE SOIC DW 20 TBD Call TI Call TI
SN74ALS620AN ACTIVE PDIP N 20 20 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
SN74ALS620ANE4 ACTIVE PDIP N 20 20 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
SN74ALS621A-1DW ACTIVE SOIC DW 20 25 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS621A-1DWE4 ACTIVE SOIC DW 20 25 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS621A-1DWG4 ACTIVE SOIC DW 20 25 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS621A-1N ACTIVE PDIP N 20 20 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
SN74ALS621A-1NE4 ACTIVE PDIP N 20 20 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
SN74ALS621ADW ACTIVE SOIC DW 20 25 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS621ADWE4 ACTIVE SOIC DW 20 25 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS621ADWG4 ACTIVE SOIC DW 20 25 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS621ADWR ACTIVE SOIC DW 20 2000 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS621ADWRE4 ACTIVE SOIC DW 20 2000 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS621ADWRG4 ACTIVE SOIC DW 20 2000 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS621AN ACTIVE PDIP N 20 20 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
SN74ALS621ANE4 ACTIVE PDIP N 20 20 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
SN74ALS623A-1DW OBSOLETE SOIC DW 20 TBD Call TI Call TI
SN74ALS623A-1DWR OBSOLETE SOIC DW 20 TBD Call TI Call TI
SN74ALS623A-1N OBSOLETE PDIP N 20 TBD Call TI Call TI
SN74ALS623ADW ACTIVE SOIC DW 20 25 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS623ADWE4 ACTIVE SOIC DW 20 25 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS623ADWG4 ACTIVE SOIC DW 20 25 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS623AN ACTIVE PDIP N 20 20 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
SN74ALS623AN3 OBSOLETE PDIP N 20 TBD Call TI Call TI
PACKAGE OPTION ADDENDUM
www.ti.com 11-Nov-2009
Addendum-Page 1
Orderable Device Status (1) Package
Type Package
Drawing Pins Package
Qty Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
SN74ALS623ANE4 ACTIVE PDIP N 20 20 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
SN74ALS623ANSR ACTIVE SO NS 20 2000 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS623ANSRE4 ACTIVE SO NS 20 2000 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS623ANSRG4 ACTIVE SO NS 20 2000 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74AS623DW OBSOLETE SOIC DW 20 TBD Call TI Call TI
SN74AS623DWR OBSOLETE SOIC DW 20 TBD Call TI Call TI
SN74AS623N OBSOLETE PDIP N 20 TBD Call TI Call TI
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
PACKAGE OPTION ADDENDUM
www.ti.com 11-Nov-2009
Addendum-Page 2
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
SN74ALS621ADWR SOIC DW 20 2000 330.0 24.4 10.8 13.0 2.7 12.0 24.0 Q1
SN74ALS623ANSR SO NS 20 2000 330.0 24.4 8.2 13.0 2.5 12.0 24.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 29-Jul-2009
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
SN74ALS621ADWR SOIC DW 20 2000 346.0 346.0 41.0
SN74ALS623ANSR SO NS 20 2000 346.0 346.0 41.0
PACKAGE MATERIALS INFORMATION
www.ti.com 29-Jul-2009
Pack Materials-Page 2
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