Datasheet

SN54ABT853, SN74ABT853
8-BIT TO 9-BIT PARITY BUS TRANSCEIVERS
SCBS198F – FEBRUARY 1991 – REVISED OCTOBER 1997
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figure 1)
V
CC
= 5 V,
T
A
= 25°C
SN54ABT853 SN74ABT853
UNIT
MIN MAX MIN MAX MIN MAX
t
Pulse duration
LE high or low 3.5 3.5 3.5
ns
t
w
P
u
lse
d
u
ration
CLR low 4 4 4
ns
t
Setu
p
time
B or PARITY before LE↓ 9.4
†
10.2 9.4
†
ns
t
su
Set
u
p
time
CLR before LE↓ 2 2 2
ns
t
h
Hold time
B or PARITY after LE↓ 0 0 0
ns
t
h
Hold
time
CLR after LE↓ 3 3 3
ns
†
This data sheet limit can vary among suppliers.
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
= 5 V,
T
A
= 25°C
SN54ABT853 SN74ABT853
UNIT
(INPUT)
(OUTPUT)
MIN TYP MAX MIN MAX MIN MAX
t
PLH
AorB
BorA
1.2 4.8 1.2 6.4 1.2 5.3
ns
t
PHL
A
or
B
B
or
A
1 4.8
†
1 5.4 1 5.3
†
ns
t
PLH
A
PARITY
2.1 9.5 2.1 13.3 2.1 11.2
ns
t
PHL
A
PARITY
2.5 9.7 2.5 11 2.5 11
ns
t
PLH
OE
PARITY
1.8 8.5 1.8 13.6 1.8 10.5
ns
t
PHL
OE
PARITY
2.3 8.6 2.3 11.7 2.3 10
ns
t
PLH
CLR ERR
1 5.5 1 6.3 1 6.2 ns
t
PLH
LE
ERR
1.8 5.1 1.8 6.1 1.8 6
ns
t
PHL
LE
ERR
1
†
5.8 1
†
6.7 1 6.6
ns
t
PLH
B or PARITY
ERR
2 10.1 2 11.8 2 11.7
ns
t
PHL
B
or
PARITY
ERR
2.2
†
11.5 2.2
†
12.9 2.2
†
12.8
ns
t
PZH
OE
A or B or PARITY
1 5.8
†
1 8.8 1 6.7
†
ns
t
PZL
OE
A
or
B
or
PARITY
1.5
†
5.8 1.5
†
9.8 1.5
†
6.7
ns
t
PHZ
OE
A or B or PARITY
1.8
†
7.3 1.8
†
9.5 1.8
†
7.9
ns
t
PLZ
OE
A
or
B
or
PARITY
2.1
†
7.2 2.1
†
8.2 2.1
†
8.1
ns
†
This data sheet limit can vary among suppliers.