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
15
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,
R
L
= 680 Ω (A outputs),
R1 = R2 = 500 Ω (B outputs),
T
A
= MIN to MAX
†
UNIT
SN54ALS653 SN74ALS653
MIN MAX MIN MAX
f
max
25 35 MHz
t
PLH
CLKBA
A
16 71 16 64
ns
t
PHL
CLKBA
A
6 24 6 22
ns
t
PLH
CLKAB
B
10 35 10 30
ns
t
PHL
CLKAB
B
5 20 5 17
ns
t
PLH
A
B
5 20 5 18
ns
t
PHL
A
B
1.5 18 2 15
ns
t
PLH
B
A
8 63 12 56
ns
t
PHL
B
A
2 18 2 15
ns
t
PLH
SBA
‡
A
12 68 19 62
ns
t
PHL
(with B high)
A
5 27 5 25
ns
t
PLH
SBA
‡
A
12 68 19 62
ns
t
PHL
(with B low)
A
5 27 5 25
ns
t
PLH
SAB
‡
B
8 30 15 35
ns
t
PHL
(with A high)
B
6 25 6 22
ns
t
PLH
SAB
‡
B
12 40 8 25
ns
t
PHL
(with A low)
B
6 25 6 22
ns
t
PLH
OEBA
A
6 35 6 30
ns
t
PHL
OEBA
A
6 27 6 24
ns
t
PZH
OEAB
B
7 25 8 22
ns
t
PZL
OEAB
B
6 25 6 22
ns
t
PHZ
OEAB
B
1 16 1 14
ns
t
PLZ
OEAB
B
2 21 2 16
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.