Datasheet

DIR
OE
A1
B1
To Seven Other Channels
1
2
19
18
SN74AHCT245
SN54AHCT245
SCLS233O –OCTOBER 1995–REVISED AUGUST 2013 www.ti.com
FUNCTION TABLE
(EACH TRANSCEIVER)
INPUTS
OPERATION
OE DIR
L L B data to A bus
L H A data to B bus
H X Isolation
LOGIC DIAGRAM (POSITIVE LOGIC)
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)
(1)
VALUE UNIT
Supply voltage range, V
CC
–0.5 to 7 V
Input voltage range, V
I
(2)
–0.5 to 7 V
Output voltage range, V
O
(2)
–0.5 to V
CC
+ 0.5 V
Input clamp current, I
IK
(V
I
< 0) –20 mA
Output clamp current, I
OK
(V
O
< 0 or V
O
> V
CC
) ±20 mA
Continuous output current, I
O
(V
O
= 0 to V
CC
) ±25 mA
Continuous current through V
CC
or GND ±75 mA
DB package
(3)
70
DGV package
(3)
92
DW package
(3)
58
Package thermal impedance, θ
JA
N package
(3)
69 °C/W
NS package
(3)
60
PW package
(3)
83
RGY package
(4)
37
Storage temperature range, T
stg
–65 to 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 voltage ratings may be exceeded if the input and output current ratings are observed.
(3) The package thermal impedance is calculated in accordance with JESD 51-7.
(4) The package thermal impedance is calculated in accordance with JESD 51-5
2 Submit Documentation Feedback Copyright © 1995–2013, Texas Instruments Incorporated
Product Folder Links: SN74AHCT245 SN54AHCT245