SN54AS867, SN54AS869
SN74ALS867A, SN74ALS869, SN74AS867, SN74AS869
SYNCHRONOUS 8-BIT UP/DOWN COUNTERS
SDAS115C – DECEMBER 1982 – REVISED JANUARY 1995
switching characteristics (see Figure 1)
V
C
R
= 4.5 V to 5.5 V,
= 50 pF,
CC
L
L
= 500 Ω,
FROM
TO
(OUTPUT)
†
PARAMETER
(INPUT)
UNIT
T
A
= MIN to MAX
SN74ALS867A
MIN
35
4
MAX
f
t
t
t
t
t
t
t
t
t
t
MHz
ns
max
PLH
PHL
PLH
PHL
PLH
PHL
PHL
PLH
PHL
PLH
14
14
16
16
14
9
CLK
CLK
RCO
4
3
Any Q
ns
3
3
ns
ns
ns
ns
ENT
RCO
2
S0 or S1 (clear mode)
Any Q
8
26
16
16
16
4
S0 or S1
(count up/down)
RCO
RCO
4
S0 or S1 (clear mode)
4
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
