74LS77 Datasheet, PDF (2/4 Pages) Motorola, Inc – 4-BIT D LATCH LOW POWER SCHOTTKY

SN54 / 74LS75
LOGIC SYMBOLS
SN54/74LS75
2367
D0 D1 D2 D3
13 E0–1
4 E2–3
VCC = PIN 5
GND = PIN 12
Q0 Q0 Q1 Q1 Q2 Q2 Q3 Q3
16 1 15 14 10 11 9 8
SN54/74LS77
1 25 6
D0 D1 D2 D3
12 E0–1
VCC = PIN 4
3 E2–3
GND = PIN 11
NC = PIN 7, 10
Q0 Q1 Q2 Q3
14 13 9 8
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
VIH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage for
All Inputs
54
VIL
Input LOW Voltage
74
0.7
Guaranteed Input LOW Voltage for
0.8
V
All Inputs
VIK
Input Clamp Diode Voltage
54
VOH
Output HIGH Voltage
74
– 0.65
– 1.5
2.5
3.5
2.7
3.5
V
VCC = MIN, IIN = – 18 mA
V
VCC = MIN, IOH = MAX, VIN = VIH
V
or VIL per Truth Table
VOL
Output LOW Voltage
54, 74
74
0.25
0.4
0.35
0.5
V
IOL = 4.0 mA ^{VCC = VCC MIN,}
VIN = VIL or VIH
V
IOL = 8.0 mA per Truth Table
IIH
Input HIGH Current
D Input
E Input
D Input
E Input
20
µA
VCC = MAX, VIN = 2.7 V
80
0.1
mA
VCC = MAX, VIN = 7.0 V
0.4
IIL
Input LOW Current
D Input
E Input
– 0.4
–1.6
mA
VCC = MAX, VIN = 0.4 V
IOS
Short Circuit Current (Note 1)
– 20
ICC
Power Supply Current
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
–100
12
mA
VCC = MAX
mA
VCC = MAX
AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V)
Limits
Symbol
Parameter
Min
Typ
Max
Unit
tPLH
tPHL
Propagation Delay, Data to Q
15
27
9.0
17
ns
tPLH
tPHL
Propagation Delay, Data to Q
12
20
7.0
15
ns
tPLH
tPHL
Propagation Delay, Enable to Q
15
14
27
25
ns
tPLH
tPHL
Propagation Delay, Enable to Q
16
30
7.0
15
ns
Test Conditions
VCC = 5.0 V
CL = 15 pF
FAST AND LS TTL DATA
5-2