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SN74LVC32245 Datasheet Preview

SN74LVC32245 Datasheet

32-BIT BUS TRANSCEIVER

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D Member of the Texas Instruments
Widebus+Family
D Operates From 1.65 V to 3.6 V
D Inputs Accept Voltages to 5.5 V
D Max tpd of 4 ns at 3.3 V
D Typical VOLP (Output Ground Bounce)
<0.8 V at VCC = 3.3 V, TA = 25°C
SN74LVC32245
32-BIT BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES343D – OCTOBER 2000 – REVISED JULY 2003
D Typical VOHV (Output VOH Undershoot)
>2 V at VCC = 3.3 V, TA = 25°C
D Ioff Supports Partial-Power-Down Mode
Operation
D Supports Mixed-Mode Signal Operation on
All Ports (5-V Input/Output Voltage With
3.3-V VCC)
description/ordering information
This 32-bit noninverting bus transceiver is designed for 1.65-V to 3.6-V VCC operation.
The SN74LVC32245 is designed for asynchronous communication between data buses. The control-function
implementation minimizes external timing requirements.
This device can be used as four 8-bit transceivers, two 16-bit transceivers, or one 32-bit transceiver. It allows
data transmission 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 device so that the
buses are effectively isolated.
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators
in a mixed 3.3-V/5-V system environment.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
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†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
LFBGA – GKE
–40°C to 85°C
Tape and reel
LFBGA – ZKE (Pb-free)
SN74LVC32245GKER
SN74LVC32245ZKER
NC245
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
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.
Widebus+ is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright 2003, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1




etcTI

SN74LVC32245 Datasheet Preview

SN74LVC32245 Datasheet

32-BIT BUS TRANSCEIVER

No Preview Available !

SN74LVC32245
32-BIT BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES343D OCTOBER 2000 REVISED JULY 2003
GKE OR ZKE PACKAGE
(TOP VIEW)
123456
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
terminal assignments
1
2
3
4
5
6
A
1B2
1B1
1DIR
1OE
1A1
1A2
B
1B4
1B3
GND
GND
1A3
1A4
C
1B6
1B5
VCC
VCC
1A5
1A6
D
1B8
1B7
GND
GND
1A7
1A8
E
2B2
2B1
GND
GND
2A1
2A2
F
2B4
2B3
VCC
VCC
2A3
2A4
G
2B6
2B5
GND
GND
2A5
2A6
H
2B7
2B8
2DIR
2OE
2A8
2A7
J
3B2
3B1
3DIR
3OE
3A1
3A2
K
3B4
3B3
GND
GND
3A3
3A4
L
3B6
3B5
VCC
VCC
3A5
3A6
M
3B8
3B7
GND
GND
3A7
3A8
N
4B2
4B1
GND
GND
4A1
4A2
P
4B4
4B3
VCC
VCC
4A3
4A4
R
4B6
4B5
GND
GND
4A5
4A6
T
4B7
4B8
4DIR
4OE
4A8
4A7
FUNCTION TABLE
(each 8-bit section)
INPUTS
OE DIR
OPERATION
L
L
B data to A bus
L
H A data to B bus
H
X
Isolation
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number SN74LVC32245
Description 32-BIT BUS TRANSCEIVER
Maker etcTI
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SN74LVC32245 Datasheet PDF






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