SN54AS867, SN54AS869
SN74ALS867A, SN74ALS869, SN74AS867, SN74AS869
SYNCHRONOUS 8-BIT UP/DOWN COUNTERS
SDAS115C – DECEMBER 1982 – REVISED JANUARY 1995
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, V
I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Operating free-air temperature range, T
A
: SN54AS869 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C
SN74AS869 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
SN54AS869
MIN
VCC
VIH
VIL
IOH
IOL
fclock*
tw(clock)*
Supply voltage
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
Clock frequency
Pulse duration, CLK high or low
Data inputs A – H
ENP or ENT
tsu*
S0 low and S1 high (load)
Setup
Set p time before CLK↑
S0 and S1 low (clear)
S0 high and S1 low (count down)
S0 and S1 high (count up)
th*
TA
Hold time after CLK↑
Operating free-air temperature
Data inputs A – H
12.5
6
10
13
13
52
52
0
– 55
125
4.5
2
0.7
–2
20
40
11
5
9
11
11
50
50
0
0
70
ns
°C
ns
NOM
5
MAX
5.5
SN74AS869
MIN
4.5
2
0.8
–2
20
45
NOM
5
MAX
5.5
UNIT
V
V
V
mA
mA
MHz
ns
* On products compliant to MIL-STD-883, Class B, this parameter is based on characterization data but is not production tested.
14
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•
DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
