16 -Bit Registers
fax id: 7051
CY74FCT163374
CY74FCT163H374
CY74FCT163LD374
CY74FCT163LDH374
Cypress Semiconductor Corporation 3901 North First Street San Jose CA 95134 408-943-2600
March 19
,
1997 – Revised April 20
,
1998
3
H374
Features
Low power, pin-compati ble replacement for LCX, LPT,
LVC, LVCH & LVT families
5V toler ant i nputs and outputs*
6 mA & 24 mA bal anced drive outputs
Power-off disable outputs permits live insertion
Edge-rate control cir cuitry f or reduced noise
FCT-C speed at 5.2 ns
Latc h-up perf orman ce exce eds JEDEC standard no. 17
Typical output skew < 250 ps
Industrial temperature range of –40°C to +85°C
TSSOP (19.6 -mil pit ch) or SSOP (25-mil pitch)
Typical Volp (ground bounce) performance exceeds Mil
Std 883D
•V
CC = 2.7V to 3.6V
ESD (HBM) > 2000V
CY74FCT163H374
Bus hold on data inputs
Eliminates the need f or external pull -up or pull-do wn
resistors
*Dev ices with bus hold are not rec ommended for trans-
lating rail-t o-rail CMOS signals to 3. 3V logi c levels
CY74FCT163LD2374
Lite Drive™ option for low noise applications
6 mA bal anced drive outputs
FCT-A speed at 6. 5 ns
•V
CC = 3.0V to 3.6V
ESD (HBM) > 1100V
Functional Descripti on
These de vi ces are 16-bi t D-type regis ters desi gned f or use as
buffered registers in high-speed, low power bus applications.
These de v ices ca n be used as two i nde pendent 8 -bit regis ters
or as a single 16-bit register by connecting the output Enable
(OE) and Clock (CLK) inputs. The outputs are 24-mA balanced
output drivers with curr ent limiti ng resistors to reduce th e need
for external terminating resistors, and provide for minimal un-
dershoot and reduced ground bounce. Flow-through pinout
and small shrink pac kaging aid in simplifying board layout.
The CY74FCT163H374 and CY74FCT163LDH374 have “bus
hold” on the data inputs, which retain the input’s last state
whenever the source driving the input goes to high impedance.
This eliminates the need for pull-up/down resistors and pre-
vents float ing inputs.
The CY74FCT163374 and the CY74FCT16LD374 are
designed with inputs and outputs capable of being driven by
5.0V buses, allowing them to be used in mixed voltage
systems as translators. The outputs are also designed with a
power off disable feature enabling them to be used in
appli cations requiring live insertion.
Lite Dr ive is a trademark of Cyp ress Semicond uctor Corporation.
Logic Block Diagrams CY74FCT163374, CY74F CT163H374, Pin Configurat ion
D
C
1OE
1CLK
1D11O1
TO 7 OTHER CHANNELS
D
C
2OE
2CLK
2D12O1
GND
1
2
3
4
5
6
7
8
9
10
11
12
33
32
31
30
29
25
26
27
28
36
35
1OE
34
SSOP/TSSOP
Top View
13
14
15
16
17
18
19
20
21
22
23
24
45
44
43
42
41
37
38
39
40
48
47
46
1O1
1O2
1O3
1O4
1D1
1D2
1D3
1D4
1CLK
GND
GND
VCC
1O7
1O8
1O5
1O6
1D5
1D6
1D7
1D8
VCC
GND
GND
2O3
2O4
2O1
2O2
2D1
2D2
2D3
2D4
GND
GND
VCC
2O7
2O8
2O5
2O6
2D5
2D6
2D7
2D8
VCC
GND
2OE 2CLK
TO 7 OTHER CHANNELS
CY74FCT163LD374, CY74FCT163LDH374
CY74FCT163374
CY74FCT163H374
CY74FCT163LD374
CY74FCT163LDH374
2
Maximum Ratings[3, 4]
(Above which the useful life may be impaired. For user
guidelines, not tested.)
Storage Temperature ..................................... 55°C to +125°C
Ambient Temperature with
Power Applied.................................................. 55°C to +125°C
Supply Voltage Range. .....................................0.5V to +4.6V
DC Input Voltage.................................................0.5V to +7.0V
DC Output Voltage..............................................0.5V to +7.0V
DC Output Current
(Maximum Sink Current/Pin)...........................60 t o +120 m A
Power Dissipation..........................................................1.0W
Function Table[1]
Inputs Outputs
FunctionDCLK OE O
X L H Z High-Z
X H H Z
L L L Load
Register
H L H
L H Z
H H Z
Pin Description
Name Description
DData Inputs[2]
CLK Clock Input s
OE Three-State Output Enable Inputs (Active LOW)
OThree-State Outputs
Operating Range
Range Ambient
Temperature VCC
Industrial 40°C to +85°C 2.7V to 3.6V
Electric al Characteri stic s for Non Bus Hold Dev ic es Over the Operating Range VCC=2.7V to 3.6V
Parameter Description Test Conditions Min. Typ.[5] Max. Unit
VIH Input HIGH Voltage All In p ut s 2.0 5.5 V
VIL Input LOW Voltage 0.8 V
VHInput Hysteresis[6] 100 mV
VIK Input Clamp Diode Voltage VCC=Min., IIN=–18 mA –0.7 –1.2 V
IIH Input HIGH Current VCC=Max., VI=5.5 ±1µA
IIL Input LOW Current VCC=Max., VI=GND ±1µA
IOZH High Impeda nce O utput Curren t
(Three-Stat e Output pins) VCC=Max., VOUT=5.5V ±1µA
IOZL High Impeda nce O utput Curren t
(Three-Stat e Output pins) VCC=Max., VOUT=GND ±1µA
IOS Short Ci rcuit Current[7] VCC=Max., VOUT=GND –60 –135 –240 mA
IOFF Power -Of f Disable VCC=0V, VOUT4.5V ±100 µA
ICC Quiescent Power Supply Current VIN0.2V,
VIN>VCC–0.2V VCC=Max. 0.1 10 µA
ICC Quiescent Power Supply Current
(TTL inputs HIGH) VIN=VCC–0.6V[8] VCC=Max. 2.0 30 µA
Notes:
1. H = HIGH Voltage Level. L = LOW Voltage Level. X = Don’t Care. Z = HIGH Impedance. = LOW-to-HIGH Transition.
2. On the CY74FCT163H374 & CY74FCT163LDH374 these pins have “bus hold.”
3. Operation beyond the limits set forth may impair the useful life of the device. Unless otherwise noted, these limits are o ver the operating free-air temperature
range.
4. Unused inputs must always be connected to an appropriate logic voltage level, preferably either VCC or ground
5. Typical values are at VCC=3.3V, TA = +25°C ambient.
6. This parameter is guaranteed but not tested.
7. Not more than one output should be shorted at a time. Duration of short should not exceed one second. The use of high-speed test apparatus and/or sample
and hold techniques are preferable in order to minimize internal chip heating and more accurately reflect operational values. Otherwise prolonged shorting of
a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parametric tests. In any sequence of parameter
tests, IOS tests should be performed last.
8. Per TTL driven input; all other inputs at VCC or GND.
CY74FCT163374
CY74FCT163H374
CY74FCT163LD374
CY74FCT163LDH374
3
Electrical Characteristics For Bus Hold Devices Over the Operating Range VCC=2.7V to 3.6V
Parameter Description Test Conditions Min. Typ.[5] Max. Unit
VIH Input HIGH Voltage All Inputs 2.0 VCC V
VIL Input LOW Voltage 0.8 V
VHInput Hysteresis[6] 100 mV
VIK Input Clamp Diode Voltage VCC=M in ., IIN=–18 m A –0.7 – 1.2 V
IIH Input HIGH Current VCC=Max., VI=VCC ±100 µA
IIL Input LOW Current ±100 µA
IBBH
IBBL Bus Hold Sustain Curr ent on Bus Hol d Input[9] VCC=Min. VI=2.0V –50 µA
VI=0.8V +50 µA
IBHHO
IBHLO Bus Hold Overdrive Current on Bus Hold Input[9] VCC=Max., VI=1.5V ±500 µA
IOZH High Impeda nce O utput Curren t
(Three-Stat e Output pins) VCC=Max., VOUT=VCC ±1µA
IOZL High Impeda nce O utput Curren t
(Three-Stat e Output pins) VCC=Max., VOUT=GND ±1µA
IOS Short Ci rcuit Current[7] VCC=Max., VOUT=GND –60 –135 –240 mA
IOFF Power -Of f Disable VCC=0V, VOUT4.5V ±100 µA
ICC Quiescent Power Supply Current VIN<0.2V VCC=Max. +40 µA
ICC Quiesce nt Power supply Current
(TTL inputs HIGH) VIN=VCC–0.6V[8] VCC=Max. +350 µA
Electrical Characteristics For Balanced Drive Devices Over the Operating Range VCC=2.7V to 3.6V
Parameter Description Test Conditions Min. Typ.[5] Max. Unit
IODL Output LOW Dynamic Current[7] VCC=3.3V, VIN=VIH
or VIL, VOUT=1.5V 45 110 mA
IODH Output HIG H Dynamic Current[7] VCC=3.3V, VIN=VIH
or VIL, VOUT=1.5V –45 –110 mA
VOH Output HIGH Voltage VCC=Mi n ., IOH= –0. 1 mA VCC–0.2 V
VCC=Mi n ., IOH= –8 mA 2.4[10] 3.0 V
VCC=3.0V, IOH= –24 mA 2.0 3.0 V
VOL Output LOW Voltage VCC=Mi n ., IOL= 0.1 mA 0.2 V
VCC=Mi n ., IOL= 24 mA 0.3 0.55
Electrical Characteristics For Lite Drive Devices Ov er the Operating Range VCC=3.0V to 3.6V
Parameter Description Test Conditions Min. Typ.[5] Max. Unit
IODL Output LOW Dynamic Current[7] VCC=3.3V, VIN=VIH
or VIL, VOUT=1.5V 15.0 45 mA
IODH Output HIG H Dynamic Current[7] VCC=3.3V, VIN=VIH
or VIL, VOUT=1.5V –15.0 –45 mA
VOH Output HIGH Voltage VCC=3.0 V, IOH= –6 mA 2.4 3.0 V
VOL Output LOW Voltage VCC=3.0 V, IOL= 6 mA 0.55 V
Notes:
9. Pins with bus hold are described in Pin Description.
10. VOH=VCC–0.6V at rated current.
CY74FCT163374
CY74FCT163H374
CY74FCT163LD374
CY74FCT163LDH374
4
Capacitance[6](TA = +25°C , f = 1.0 MHz)
Parameter Description Test Condi ti ons Typ.[5] Max. Unit
CIN Input Capacitance VIN = 0V 4.5 6.0 pF
COUT Output Capacitance VOUT = 0V 5.5 8.0 pF
Power Suppl y Characteri stic s
Parameter Description Test Condi ti ons Typ.[5] Max. Unit
ICCD Dyna mic Power Supply
Current[11] VCC=Max., One Input Toggling,
50% Duty Cycle,
Outputs Open, OE=GND
VIN=VCC or
VIN=GND 50 75 µA/MHz
ICTota l Power Supply
Current[12] VCC=Max., f1=10 MHz, 50%
Duty Cycle, Out puts Ope n, One
Bit Toggling, OE=GND
VIN=VCC or
VIN=GND 0.5 0.8 mA
VIN=VCC–0.6V o r
VIN=GND 0.5 0.8 mA
VCC=Max., f1=2.5 MHz, 50%
Duty Cycle, Outputs Open, Six-
teen Bits Toggling, OE=GND
VIN=VCC or
VIN=GND 2.0 3.0[13] mA
VIN=VCC–0.6V o r
VIN=GND 2.0 3.3[13] mA
Swi tch i ng C h aracteri sti cs Ove r the Operating Range VCC=3.0V to 3.6V[14,15]
Parameter Description
CY74FCT163374A
CY74FCT163H374A CY74FCT163374C
CY74FCT163H374C
Min. Max. Min. Max. Unit Fig. No.[16]
tPLH
tPHL Propagation Delay Clock to
Output 1.5 6.5 1.5 5.2 ns 1, 3
tPZH
tPZL Output Enable Time 1.5 6.5 1.5 5.5 ns 1, 7, 8
tPHZ
tPLZ Out p ut Di sable T i m e 1.5 5.5 1.5 5.0 ns 1, 7, 8
tSU Input Setup time 2.0 2.0 ns 1, 4
tH Input Hold time 1.5 -1.5 -ns 1. 4
tSK(O) Output Skew[17] 0.5 0.5 ns
Notes:
11. This parameter is not directly testable, but is derived f or use in Total Power Supply calculations.
12. IC=I
QUIESCENT + IINPUTS + IDYNAMIC
IC=I
CC+ICCDHNT+ICCD(f0/2 + f1N1)
ICC = Quiescent Current with CMOS input levels
ICC = Power Supply Current for a TTL HIGH input (VIN=3.4V)
DH= Duty Cycle for TTL inputs HIGH
NT= Number of TTL inputs at DH
ICCD = Dynamic Current caused by an input transition pair (HLH or LHL)
f0= Clock frequency f o r registered devices, otherwise zero
f1= Input signal frequency
N1= Number of inputs changing at f1
All currents are in milliamps and all frequencies are in megahertz.
13. Values for these conditions are examples of the ICC formula. These limits are guaranteed but not tested.
14. Minimum limits are guaranteed but not tested on Propagation Delays.
15. For VCC =2.7, propagation delay, output enable and output disable times should be degraded by 20%.
16. See “Parameter Measurement Information in the General Information section.
17. Skew between any tw o outputs of the same package switching in the same direction. This parameter is guaranteed by design.
CY74FCT163374
CY74FCT163H374
CY74FCT163LD374
CY74FCT163LDH374
5
Document #: 38-00577-A
Swi tch i ng C h aracteri sti cs Ov er the Operating Range VCC=3.0V to 3. 6V [14,15]
Parameter Description
CY74FCT163LD374[18]
CY74FCT163LDH374 CY74FCT163LD374A[18]
CY74FCT163LDH374A
Min. Max. Min. Max. Unit Fi g. No.[16]
tPLH
tPHL Propagation Delay Clock to
Q Output 1.5 10 1.5 6.5 ns 1, 3
tPZH
tPZL Output Enab le Time 1.5 12.5 1. 5 6.5 ns 1, 7, 8
tPHZ
tPLZ Output Disable Time 1.5 8.0 1.5 5.5 ns 1, 7, 8
tSU In put Se tup time 2.0 2.0 ns 1, 4
tH Inp u t H o ld ti me 1. 5 1.5 ns 1, 4
tSK(O) Output Skew[17] 0.5 0.5 ns
Note:
18. For Lite Drive de vices the load capacitance is 30 pF. For all others it is 50 pF.
Ordering Information CY74FCT163374
Speed
(ns) Ordering Code Package
Name Packag e Type Operating
Range
5.2 CY74FCT163374CPAC Z48 48-Lead (240-Mil) TSSOP Industrial
CY74FCT163374CPVC O48 48-Lead (300-Mil) SSOP
6.5 CY74FCT163374APAC Z48 48-Lead (240-Mil) TSSOP Industrial
CY74FCT163374APVC O48 48-Lead (300-Mil) SSOP
Ordering Information CY74FCT163H374
Speed
(ns) Ordering Code Package
Name P ac kage Type Operating
Range
5.2 CY74FCT163H374CPAC Z48 48-Lead (24 0-Mil) TSSOP Industrial
CY74FCT163H374CPVC O48 48-Lead (300-Mil) SSOP
6.5 CY74FCT163H374APAC Z48 48-Lead (240-Mil) TSSOP Industrial
CY74FCT163H374APVC O48 48-Lead (300-Mil) SSOP
Ordering Information CY74FCT163LD374
Speed
(ns) Ordering Code Package
Name Packag e Type Operating
Range
6.5 CY74FCT16 3LD374APAC Z48 48-Lead (240-Mil) TSSOP Indus trial
CY74FCT163LD374APVC O48 48-Lead (30 0-Mi l) SSOP
10 CY74FCT163LD374PAC Z48 48-Lead (240-Mil) TSSOP I ndustrial
CY74FCT163LD374PVC O48 48-L ead (300-Mil ) SSOP
Ordering Information CY74FCT163LDH374
Speed
(ns) Ordering Code Package
Name Packag374e Type Operating
Range
6.5 CY74FCT16 3LDH374APAC Z48 48-Lead (240-Mil) TSSOP Indus trial
CY74FCT163LDH374APVC O48 48-Lead (30 0-Mi l) SSOP
10 CY74FCT163LDH374PAC Z48 48-Lead (24 0-Mil) TSSOP Industrial
CY74FCT163LDH374PAC O48 48-Lead (300-Mil) SSOP
CY74FCT163374
CY74FCT163H374
CY74FCT163LD374
CY74FCT163LDH374
© Cypress Semiconductor Corporation, 1998. The information contained herein is subject to change without notice. Cypress Semic onductor Corporation assumes no responsibili ty for the use
of any circui try other than circuitry embodied in a Cypress Semic onductor product. Nor does it conv ey or imply any license under patent or oth er rights . Cypress Semiconductor does not authorize
its products for use as critical components in life-suppor t systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress
Semiconductor products in life-support sy stems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.
1CY74FCT163H374
Package Di ag ra ms
48-Lead Shrunk Small Outline PackageO48
48-Lead Thin Shrunk Small Outline Package Z48