SN74LVC32244 Datasheet, PDF (1/10 Pages) Texas Instruments – 32 BIT BUFFER /DRIVER WITH 3 STATE OUTPUTS

SN74LVC32244
32ĆBIT BUFFER/DRIVER
WITH 3ĆSTATE OUTPUTS
SCES342C − OCTOBER 2000 − REVISED AUGUST 2003
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 t_pd of 4.1 ns at 3.3 V
D Typical V_OLP (Output Ground Bounce)
<0.8 V at V_CC = 3.3 V, T_A = 25°C
D Typical V_OHV (Output V_OH Undershoot)
>2 V at V_CC = 3.3 V, T_A = 25°C
D I_off Supports Partial-Power-Down Mode
Operation
D Supports Mixed-Mode Signal Operation on
All Ports (5-V Input/Output Voltage With
3.3-V V_CC)
description/ordering information
This 32-bit buffer/driver is designed for 1.65-V to 3.6-V V_CC operation.
The SN74LVC32244 is designed specifically to improve the performance and density of 3-state memory
address drivers, clock drivers, and bus-oriented receivers and transmitters.
The device can be used as eight 4-bit buffers, four 8-bit buffers, two 16-bit buffers, or one 32-bit buffer. It provides
true outputs and symmetrical active-low output-enable (OE) inputs.
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 I_off. The I_off 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 V_CC 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)
SN74LVC32244GKER
SN74LVC32244ZKER
NC244
† _{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
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