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SCBS133F − MAY 1992 − REVISED OCTOBER 2003
D, DB, NS, OR PW PACKAGE
(TOP VIEW)
D
Supports Mixed-Mode Signal Operation
(5-V Input and Output Voltages With
3.3-V V
)
CC
1
2
3
4
5
6
7
14
13
12
11
10
9
1OE
1A
1Y
2OE
2A
2Y
V
CC
4OE
D
D
D
D
D
D
Supports Unregulated Battery Operation
Down to 2.7 V
4A
4Y
3OE
3A
3Y
Typical V
<0.8 V at V
(Output Ground Bounce)
OLP
CC
= 3.3 V, T = 25°C
A
I
Supports Partial-Power-Down Mode
off
8
Operation
GND
Bus-Hold Data Inputs Eliminate the Need
for External Pullup Resistors
Latch-Up Performance Exceeds 500 mA
Per JEDEC Standard JESD-17
ESD Protection Exceeds JESD 22
− 2000-V Human-Body Model (A114-A)
− 200-V Machine Model (A115-A)
description/ordering information
This bus buffer is designed specifically for low-voltage (3.3-V) V
a TTL interface to a 5-V system environment.
operation, but with the capability to provide
CC
The SN74LVT125 features independent line drivers with 3-state outputs. Each output is in the high-impedance
state when the associated output-enable (OE) input is high.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors
with the bus-hold circuitry is not recommended.
This device is fully specified for partial-power-down applications using I . The I circuitry disables the outputs,
off
off
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 V
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
through a pullup
CC
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
Tube
SN74LVT125D
SOIC − D
LVT125
Tape and reel
Tape and reel
Tape and reel
Tube
SN74LVT125DR
SN74LVT125NSR
SN74LVT125DBR
SN74LVT125PW
SN74LVT125PWR
SOP − NS
LVT125
LX125
−40°C to 85°C
SSOP − DB
TSSOP − PW
LX125
Tape and reel
†
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.
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Copyright 2003, Texas Instruments Incorporated
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