Datasheet

SN54ALS652, SN54ALS653, SN54AS651, SN54AS652
SN74ALS651A, SN74ALS652A, SN74ALS653, SN74ALS654, SN74AS651, SN74AS652
OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SDAS066G – DECEMBER 1983 – REVISED DECEMBER 2000
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics (see Figure 2)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
= 4.5 V to 5.5 V,
C
L
= 50 pF,
R1 = 500 Ω,
R2 = 500 Ω,
T
A
= MIN to MAX
†
UNIT
SN74ALS651A
MIN MAX
f
max
40 MHz
t
PLH
CLKBA or CLKAB
AorB
8 32
ns
t
PHL
CLKBA
or
CLKAB
A
or
B
5 17
ns
t
PLH
AorB
BorA
2 18
ns
t
PHL
A
or
B
B
or
A
2 10
ns
t
PLH
SBA or SAB
‡
AorB
8 38
ns
t
PHL
(with A or B high)
A
or
B
6 21
ns
t
PLH
SBA or SAB
‡
AorB
8 25
ns
t
PHL
(with A or B low)
A
or
B
7 21
ns
t
PZH
OEBA
A
3 20
ns
t
PZL
OEBA
A
5 18
ns
t
PHZ
OEBA
A
2 9
ns
t
PLZ
OEBA
A
3 12
ns
t
PZH
OEAB
B
3 22
ns
t
PZL
OEAB
B
6 21
ns
t
PHZ
OEAB
B
2 12
ns
t
PLZ
OEAB
B
2 14
ns
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
‡
These parameters are measured with the internal output state of the storage register opposite that of the bus input.