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SN74LVCH32244AGKER-SN74LVCH32244AZKER
32-Bit Buffer/Driver With 3-State Outputs
www.ti.com
FEATURES
DESCRIPTION/ORDERING INFORMATION
SN74LVCH32244A
32-BIT BUFFER/DRIVER
WITH 3-STATE OUTPUTSSCAS617E–OCTOBER 1998–REVISED MARCH 2005
Supports Mixed-Mode Signal Operation on
All Ports (5-V Input/Output Voltage With•
Memberof the Texas Instruments Widebus+™
3.3-V VCC)Family Bus Hold on Data Inputs Eliminates the Need•
Operates From 1.65Vto 3.6V
for External Pullup/Pulldown Resistors•
Inputs Accept Voltagesto 5.5V •
Latch-Up Performance Exceeds 100 mA Per•
Maxtpdof 4.1 nsat 3.3V JESD 78, ClassII•
Typical VOLP (Output Ground Bounce) •
ESD Protection Exceeds JESD22<0.8Vat VCC= 3.3V,TA= 25°C – 2000-V Human-Body Model (A114-A)•
Typical VOHV (Output VOH Undershoot) 200-V Machine Model (A115-A)>2Vat VCC= 3.3V, TA= 25°C 1000-V Charged-Device Model (C101)•
Ioff Supports Partial-Power-Down Mode
OperationThis 32-bit buffer/driveris designedfor 1.65-Vto 3.6-VVCC operation.
provides true outputs and symmetrical active-low output-enable (OE) inputs.
Inputs canbe driven from either 3.3-Vor 5-V devices. This feature allows the useof these devicesas translatorsa mixed 3.3-V/5-V system environment.
This deviceis fully specified for partial-power-down applications usingIoff. TheIoff circuitry disables the outputs,
preventing damaging current backflow through the device whenitis powered down. ensure the high-impedance state during power upor power down, OE should be tiedtoVCC througha pullup
resistor; the minimum valueof the resistoris determinedby the current-sinking capabilityof the driver.
Active bus-hold circuitry holds unusedor undriven inputsata valid logic state. Useof pullupor pulldown resistors
with the bus-hold circuitryis not recommended.
ORDERING INFORMATION PACKAGE(1) ORDERABLE PART NUMBER TOP-SIDE MARKINGLFBGA– GKE SN74LVCH32244AGKER–40°Cto 85°C Tape and reel CH244ALFBGA– ZKE (Pb-free) SN74LVCH32244AZKER
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelinesare availableat
www.ti.com/sc/package.
