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SN74AVC4T245DG4 数据表(PDF) 2 Page - Texas Instruments

部件名 SN74AVC4T245DG4
功能描述  4-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

SN74AVC4T245DG4 数据表(HTML) 2 Page - Texas Instruments

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DESCRIPTION/ORDERING INFORMATION (CONTINUED)
DIR
OE
A1
A2
B1
B2
SN74AVC4T245
4-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES576D – JUNE 2004 – REVISED SEPTEMBER 2007
The VCC isolation feature ensures that if either VCC 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 VCC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
ORDERING INFORMATION
TA
PACKAGE(1)(2)
ORDERABLE PART NUMBER
TOP-SIDE MARKING
QFN – RGY
Tape and reel
SN74AVC4T245RGYR
WT245
QFN – RSV
Tape and reel
SN74AVC4T245RSVR
2WU
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.
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
2
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Copyright © 2004–2007, Texas Instruments Incorporated
Product Folder Link(s): SN74AVC4T245


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