CY74FCT16500T
CY74FCT162500T
Maximum Ratings[5, 6]
Pin Summary
(Above which the useful life may be impaired. For user
guidelines, not tested.)
Name
Description
OEAB
OEBA
LEAB
LEBA
CLKAB
CLKBA
A
A-to-B Output Enable Input
Storage Temperature .......................Com’l −55°C to +125°C
B-to-A Output Enable Input (Active LOW)
A-to-B Latch Enable Input
Ambient Temperature with
Power Applied................................... Com’l −55°C to +125°C
B-to-A Latch Enable Input
DC Input Voltage .................................................−0.5V to +7.0V
DC Output Voltage ..............................................−0.5V to +7.0V
A-to-B Clock Input (Active LOW)
DC Output Current
(Maximum Sink Current/Pin) ...........................−60 to +120 mA
B-to-A Clock Input (Active LOW)
A-to-B Data Inputs or B-to-A Three-State Outputs
B-to-A Data Inputs or A-to-B Three-State Outputs
Power Dissipation..........................................................1.0W
B
Static Discharge Voltage............................................>2001V
(per MIL-STD-883, Method 3015)
Function Table[1, 2]
Operating Range
Inputs
Outputs
OEAB
LEAB
CLKAB
A
X
L
B
Z
Ambient
Range
Industrial
Temperature
VCC
L
X
H
H
L
X
X
X
−40°C to +85°C
5V ± 10%
H
H
H
H
H
H
L
H
L
H
L
L
H
X
X
H
L
H
L
B[3]
B[4]
L
Electrical Characteristics Over the Operating Range
Parameter
Description
Input HIGH Voltage
Test Conditions
Min.
Typ.[7]
Max.
Unit
VIH
VIL
VH
VIK
IIH
2.0
V
V
Input LOW Voltage
Input Hysteresis[8]
0.8
100
mV
V
Input Clamp Diode Voltage
Input HIGH Current
Input LOW Current
VCC=Min., IIN=−18 mA
VCC=Max., VI=VCC
−0.7
−1.2
±1
µA
µA
µA
IIL
VCC=Max., VI=GND.
VCC=Max., VOUT=2.7V
±1
IOZH
High Impedance Output Current
(Three-State Output pins)
±1
IOZL
High Impedance Output Current
(Three-State Output pins)
VCC=Max., VOUT=0.5V
±1
µA
IOS
IO
Short Circuit Current[9]
Output Drive Current[9]
Power-Off Disable
VCC=Max., VOUT=GND
VCC=Max., VOUT=2.5V
VCC=0V, VOUT≤4.5V[10]
−80
−50
−140
−200
−180
±1
mA
mA
µA
IOFF
Notes:
1. H = HIGH Voltage Level. L = LOW Voltage Level. X = Don’t Care. Z = HIGH Impedance.
2. A-to-B data flow is shown, B-to-A data flow is similar but uses OEBA, LEBA, and CLKBA.
3. Output level before the indicated steady-state input conditions were established.
= HIGH-to-LOW Transition.
4. Output level before the indicated steady-state input conditions were established, provided that CLKAB was LOW before LEAB went LOW.
5. Operation beyond the limits set forth may impair the useful life of the device. Unless otherwise noted, these limits are over the operating free-air temperature
range.
6. Unused inputs must always be connected to an appropriate logic voltage level, preferably either VCC or ground.
7. Typical values are at VCC= 5.0V, TA= +25˚C ambient.
8. This parameter is specified but not tested.
9. 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.
10. Tested at +25˚C.
2