Page 22 - EE2449_TTL_Datasheet

SN54/74LS83A

DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol Parameter Min Typ Max Unit Test Conditions
Guaranteed Input HIGH Voltage for
V IH Input HIGH Voltage 2.0 V
All Inputs
54 0.7 Guaranteed Input LOW Voltage for
g
t

Inp
u
LOW
oltage
V Input LOW Voltage V V All Inputs

V
V ILIL
74 0.8
V IK Input Clamp Diode Voltage –0.65 –1.5 V V CC = MIN, I IN = –18 mA
3
54
.
54 2 25 5 35 5 V V V V CC = MIN, I OH = MAX, V IN = V IH IH
.
V
MIN I OH
MAX V IN
CC
Output HIGH Voltage
V OH
V OH Output HIGH Voltage per Truth Table
74 2.7 3.5 V
54, 74 0.25 0.4 V I OL = 4.0 mA V CC = V CC MIN,
V O u tp u t LOW V oltage V
Output LOW Voltage
V IN =V IL or V IHIN = V IL or V IH
V OLOL
74 0.35 0.5 V I OL = 8.0 mA per Truth Table
Input HIGH Current
C 0 20 mA V CC = MAX, V IN = 2.7 V
A or B 40
I IH
IH
C 0 0.1
mA V CC = MAX, V IN = 7.0 V
A or B 0.2
Input LOW Current
I IL C 0 –0.4 mA V CC = MAX, V IN = 0.4 V
A or B –0.8
I OS Output Short Circuit Current (Note 1) –20 –100 mA V CC = MAX
I CC Power Supply Current
All Inputs Grounded 39
All Inputs at 4.5 V, Except B 34 mA V CC = MAX
All Inputs at 4.5 V 34
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (T A = 25°C)
Limits
Symbol Parameter Min Typ Max Unit Test Conditions
t PLH Propagation Delay, C 0 Input 16 24 ns
t PHL to any S Output 15 24
t PLH Propagation Delay, Any A or 15 24 ns
t PHL B Input to S Outputs 15 24 V CC = 5.0 V
C L = 15
C L =15 pF F
t PLH Propagation Delay, C 0 Input 11 17 ns Figures 1 and 2
t PHL to C 4 Output 15 22
t PLH Propagation Delay, Any A or 11 17 ns
t PHL B Input to C 4 Output 12 17
AC WAVEFORMS
1.3 V 1.3 V 1.3 V 1.3 V
V IN V IN
t PHL t PLH t PLH t PHL
V OUT
1.3 V 1.3 V V OUT 1.3 V 1.3 V
Figure 1 Figure 2

FAST AND LS TTL DATA
5-82
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