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SN74LVC8T245 Datasheet(PDF) 1 Page - Texas Instruments

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Part No. SN74LVC8T245
Description  8BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

SN74LVC8T245 Datasheet(HTML) 1 Page - Texas Instruments

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SN74LVC8T245
8BIT DUALSUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3STATE OUTPUTS
SCES584 − JULY 2004
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Control Inputs VIH/VIL Levels Are
Referenced to VCCA Voltage
D VCC Isolation Feature − If Either VCC Input
Is at GND, All I/O Ports Are in the
High-Impedance State
D Ioff Supports Partial-Power-Down Mode
Operation
D Fully Configurable Dual-Rail Design Allows
Each Port to Operate Over the Full 1.65-V to
5.5-V Power-Supply Range
DGV OR PW PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
VCCA
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
GND
VCCB
VCCB
OE
B1
B2
B3
B4
B5
B6
B7
B8
GND
RGY PACKAGE
(TOP VIEW)
124
12
13
2
3
4
5
6
7
8
9
10
11
23
22
21
20
19
18
17
16
15
14
VCCB
OE
B1
B2
B3
B4
B5
B6
B7
B8
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
description/ordering information
This 8-bit noninverting bus transceiver uses two separate configurable power-supply rails. The SN74LVC8T245
is optimized to operate with VCCA/VCCB set at 1.65 V to 5.5 V. The A port is designed to track VCCA. VCCA accepts
any supply voltage from 1.65 V to 5.5 V. The B port is designed to track VCCB. VCCB accepts any supply voltage
from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation between any of the 1.8-V,
2.5-V, 3.3-V, and 5.5-V voltage nodes.
The SN74LVC8T245 is designed for asynchronous communication between data buses. The device transmits
data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the
direction-control (DIR) input. The output-enable (OE) input can be used to disable the outputs so the buses are
effectively isolated.
The SN74LVC8T245 is designed so that the control pins (DIR and OE) are supplied by VCCA.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
QFN − RGY
Tape and reel
SN74LVC8T245RGYR
−40
°C to 85°C
TSSOP − PW
Tube
SN74LVC8T245PW
−40
°C to 85°C
TSSOP − PW
Tape and reel
SN74LVC8T245PWR
TVSOP − DGV
Tape and reel
SN74LVC8T245DGVR
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
Copyright
 2004, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.


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