Datasheet

SN74FB2031
9-BIT TTL/BTL ADDRESS/DATA TRANSCEIVER
SCBS176N – NOVEMBER 1991 – REVISED JUNE 2001
5–34
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions (see Note 2)
MIN NOM MAX UNIT
V
CC,
BIAS V
CC
,
BG V
CC
Supply voltage 4.5 5 5.5 V
B port 1.62 2.3
V
IH
High-level input voltage
Except B port 2
V
B port 0.75 1.47
V
IL
Low-level input voltage
Except B port 0.8
V
I
OH
High-level output current A port –3 mA
A port 24
I
OL
Low-level output current
B
port 100
mA
T
A
Operating free-air temperature 0 70 °C
NOTE 2: To ensure proper device operation, all unused inputs must be terminated as follows: A and control inputs to V
CC
(5 V) or GND, and
B inputs to GND only. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP
†
MAX UNIT
B port V
CC
= 4.5 V, I
I
= –18 mA –1.2
V
IK
Except B port V
CC
= 4.5 V, I
I
= –40 mA –0.5
V
V
OH
A port V
CC
= 4.5 V, I
OH
= –3 mA 2.5 3.3 V
A port V
CC
= 4.5 V, I
OL
= 24 mA 0.35 0.5
V
OL
I
OL
= 80 mA 0.75 1.1
V
B port
V
CC
= 4.5 V
I
OL
= 100 mA 1.15
I
I
Except B port V
CC
= 5.5 V, V
I
= 5.5 V 50 µA
I
IH
‡
Except B port V
CC
= 5.5 V, V
I
= 2.7 V 50 µA
Except B port V
CC
= 5.5 V, V
I
= 0.5 V –50
µ
I
IL
‡
B port V
CC
= 5.5 V, V
I
= 0.75 V –100
µA
I
OZH
A port V
CC
= 2.1 V to 5.5 V, V
O
= 2.7 V 50 µA
I
OZL
A port V
CC
= 2.1 V to 5.5 V, V
O
= 0.5 V –50 µA
I
OZPU
A port V
CC
= 0 to 2.1 V, V
O
= 0.5 V to 2.7 V 50 µA
I
OZPD
A port V
CC
= 2.1 V to 0, V
O
= 0.5 V to 2.7 V –50 µA
I
OH
B port V
CC
= 0 to 5.5 V, V
O
= 2.1 V 100 µA
I
OS
§
A port V
CC
= 5.5 V, V
O
= 0 –30 –150 mA
A port to B port 78
I
CC
B port to A port
V
CC
= 5.5 V, I
O
= 0
78
mA
C
i
V
I
= 0.5 V or 2.5 V 4.5 pF
A port
V
O
= 0.5 V or 2.5 V 8.5
C
io
B port per
IEEE Std 1194.1-1991
V
CC
= 0 to 5.5 V 6
pF
†
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.