Datasheet

SN54ALS161B, SN54ALS162B, SN54ALS163B, SN54AS161, SN54AS163
SN74ALS161B, SN74ALS163B, SN74AS161, SN74AS163
SYNCHRONOUS 4-BIT DECADE AND BINARY COUNTERS
SDAS276A – DECEMBER 1994 – REVISED JULY 2000
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions
SN54AS161
SN54AS163
SN74AS161
SN74AS163
UNIT
MIN NOM MAX MIN NOM MAX
V
CC
Supply voltage 4.5 5 5.5 4.5 5 5.5 V
V
IH
High-level input voltage 2 2 V
V
IL
Low-level input voltage 0.8 0.8 V
I
OH
High-level output current –2 –2 mA
I
OL
Low-level output current 20 20 mA
T
A
Operating free-air temperature –55 125 0 70 °C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER TEST CONDITIONS
SN54AS161
SN54AS163
SN74AS161
SN74AS163
UNIT
MIN TYP
†
MAX MIN TYP
†
MAX
V
IK
V
CC
= 4.5 V, I
I
= –18 mA –1.2 –1.2 V
V
OH
V
CC
= 4.5 V to 5.5 V, I
OH
= –2 mA V
CC
–2 V
CC
–2 V
V
OL
V
CC
= 4.5 V, I
OL
= 20 mA 0.25 0.5 0.25 0.5 V
LOAD 0.3 0.3
I
I
ENT
V
CC
= 5.5 V, V
I
= 7 V
0.2 0.2
mA
All others 0.1 0.1
LOAD 60 60
I
IH
ENT
V
CC
= 5.5 V, V
I
= 2.7 V
40 40
µA
All others 20 20
LOAD –1.5 –1.5
I
IL
ENT
V
CC
= 5.5 V, V
I
= 0.4 V
–1 –1
mA
All others –0.5 –0.5
I
O
‡
V
CC
= 5.5 V, V
O
= 2.25 V –30 –112 –30 –112 mA
I
CC
V
CC
= 5.5 V 35 53 35 53 mA
†
All typical values are at V
CC
= 5 V, T
A
= 25°C.
‡
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, I
OS
.