Datasheet

SN74F657
OCTAL TRANSCEIVER WITH PARITY GENERATOR/CHECKER
AND 3-STATE OUTPUTS
SDFS027A – D3217, JANUARY 1989 – REVISED OCTOBER 1993
2–5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP
†
MAX UNIT
V
IK
V
CC
= 4.5 V, I
I
= – 18 mA – 1.2 V
Any output V
CC
= 4.5 V, I
OH
= – 3 mA
2.4 3.3
V
OH
B1–B8, PARITY, ERR
V
CC
= 4.5 V, I
OH
= – 15 mA
2 3.1
V
Any output V
CC
= 4.75 V, I
OH
= – 1 mA to – 3 mA
2.7
V
A1–A8
V45V
I
OL
= 24 mA
0.35 0.5
V
V
OL
B1–B8, PARITY, ERR
V
CC
=
4
.
5
V
I
OL
= 64 mA
0.42 0.55
V
T/R V
CC
= 0, V
I
= 7 V, OE = 4.5 V
0.1
OE V
CC
= 0, V
I
= 7 V, T/R = 4.5 V
0.1
I
I
ODD/EVEN V
CC
= 0, V
I
= 7 V
0.1
mA
A1–A8
V
CC
=55V
V
I
=7V
2
B1–B8
V
CC
=
5
.
5
V
,
V
I
=
7
V
1
‡
A, B, PARITY
70
I
IH
‡
T/R, OE
V
CC
= 5.5 V, V
I
= 2.7 V
40
µA
IH
ODD/EVEN
20
‡
A, B, PARITY
–70
I
IL
‡
T/R, OE
V
CC
= 5.5 V, V
I
= 0.5 V
–40
µA
IL
ODD/EVEN
–20
A1–A8
V
CC
=55V
V
O
=0
–60 – 150
mA
I
OS
§
B1–B8
V
CC
=
5
.
5
V
,
V
O
=
0
– 100 – 225
mA
I
OZH
ERR V
CC
= 5.5 V, V
I
= 2.7 V 50 µA
I
OZL
ERR V
CC
= 5.5 V, V
I
= 0.5 V –50 µA
I
CCH
V
CC
= 5.5 V 90 125 mA
I
CCL
V
CC
= 5.5 V 106 150 mA
I
CCZ
V
CC
= 5.5 V 98 145 mA
†
All typical values are at V
CC
= 5 V, T
A
= 25°C.
‡
For I/O ports, the parameters I
IH
and I
IL
include the off-state output current.
§
Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.