Datasheet

DIR
OE
A1
A2
B1
B2
SN74AVC4T245
SCES576E –JUNE 2004– REVISED DECEMBER 2011 www.ti.com
DESCRIPTION/ORDERING INFORMATION (CONTINUED)
The V
CC
isolation feature ensures that if either V
CC
input is at GND, then both ports are in the high-impedance
state.
To ensure the high-impedance state during power up or power down, OE should be tied to V
CC
through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
ORDERING INFORMATION
T
A
PACKAGE
(1) (2)
ORDERABLE PART NUMBER TOP-SIDE MARKING
QFN – RGY Tape and reel SN74AVC4T245RGYR WT245
QFN – RSV Tape and reel SN74AVC4T245RSVR ZWU
Tube SN74AVC4T245D
SOIC – D AVC4T245
–40°C to 85°C Tape and reel SN74AVC4T245DR
Tube SN74AVC4T245PW
TSSOP – PW WT245
Tape and reel SN74AVC4T245PWR
TVSOP – DGV Tape and reel SN74AVC4T245DGVR WT245
(1) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
(2) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
Table 1. FUNCTION TABLE
(1)
(each 2-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) FOR 1/2 OF AVC4T245
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Product Folder Link(s): SN74AVC4T245