Datasheet

DIR
OE
A1
B1
To Seven Other Channels
2
3
22
21
SN74LVC8T245-Q1
SCES815 –SEPTEMBER 2010 www.ti.com
FUNCTION TABLE
(1)
(EACH 8-BIT SECTION)
CONTROL INPUTS OUTPUT CIRCUITS
OPERATION
OE DIR A PORT B PORT
L L Enabled Hi-Z B data to A bus
L H Hi-Z Enabled A data to B bus
H X Hi-Z Hi-Z Isolation
(1) Input circuits of the data I/Os are always active.
LOGIC DIAGRAM (POSITIVE LOGIC)
ABSOLUTE MAXIMUM RATINGS
(1)
over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
V
CCA
Supply voltage range –0.5 6.5 V
V
CCB
I/O ports (A port) –0.5 6.5
V
I
Input voltage range
(2)
I/O ports (B port) –0.5 6.5 V
Control inputs –0.5 6.5
A port –0.5 6.5
Voltage range applied to any output
V
O
V
in the high-impedance or power-off state
(2)
B port –0.5 6.5
A port –0.5 V
CCA
+ 0.5
V
O
Voltage range applied to any output in the high or low state
(2) (3)
V
B port –0.5 V
CCB
+ 0.5
I
IK
Input clamp current V
I
< 0 –50 mA
I
OK
Output clamp current V
O
< 0 –50 mA
I
O
Continuous output current ±50 mA
Continuous current through each V
CCA
, V
CCB
, and GND ±100 mA
q
JA
Package thermal impedance
(4)
PW package 88 °C/W
T
stg
Storage temperature range –65 150 °C
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) The input and output negative-voltage ratings may be exceeded if the input and output current ratings are observed.
(3) The output positive-voltage rating may be exceeded up to 6.5 V maximum if the output current rating is observed.
(4) The package thermal impedance is calculated in accordance with JESD 51-7.
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