74LVT162240DGGRE4中文资料

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SN54LVT162240, SN74LVT1622403.3-V ABT 16-BIT BUFFERS/DRIVERSWITH 3-STATE OUTPUTS SCBS719 – JULY 2000

1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

DMembers of the Texas Instruments

Widebus™ Family

DState-of-the-Art Advanced BiCMOS

Technology (ABT) Design for 3.3-VOperation and Low Static-PowerDissipationDOutput Ports Have Equivalent 22-Ω Series

Resistors, So No External Resistors AreRequiredDSupport Mixed-Mode Signal Operation

(5-V Input and Output Voltages With3.3-V VCC)

DSupport Unregulated Battery Operation

Down to 2.7 VDTypical V

OLP (Output Ground Bounce)

<0.8 V at VCC = 3.3 V, TA = 25°C

DI

off and Power-Up 3-State Support Hot

InsertionDDistributed V

CC and GND Pins Minimize

High-Speed Switching NoiseDFlow-Through Architecture Optimizes PCB

LayoutDLatch-Up Performance Exceeds 100 mA Per

JESD 78, Class IIDESD Protection Exceeds JESD 22

– 2000-V Human-Body Model (A114-A)– 200-V Machine Model (A115-A)– 1000-V Charged-Device Model (C101)DPackage Options Include Plastic Shrink

Small-Outline (DL), Thin ShrinkSmall-Outline (DGG), and Thin VerySmall-Outline (DGV) Packages and 380-milFine-Pitch Ceramic Flat (WD) PackageUsing 25-mil Center-to-Center Spacings

NOTE:For tape and reel order entry: The DGGR package is abbreviated to GR, andthe DGVR package is abbreviated to VR.

descriptionThe ’LVT162240 devices are 16-bit buffers/drivers designed specifically for low-voltage (3.3-V) VCC operationand to improve both the performance and density of 3-state memory address drivers, clock drivers, andbus-oriented receivers and transmitters. They have the capability to provide a TTL interface to a 5-V systemenvironment.

These devices can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer and provide invertingoutputs and symmetrical active-low output-enable (OE) inputs.

Copyright © 2000, Texas Instruments IncorporatedUNLESS OTHERWISE NOTED this document contains PRODUCTION

DATA information current as of publication date. Products conform tospecifications per the terms of Texas Instruments standard warranty.Production processing does not necessarily include testing of allparameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications ofTexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Widebus is a trademark of Texas Instruments.

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1OE1Y11Y2GND1Y31Y4VCC2Y12Y2GND2Y32Y43Y13Y2GND3Y33Y4VCC4Y14Y2GND4Y34Y44OE2OE1A11A2GND1A31A4VCC

2A1

2A2GND2A32A43A13A2GND3A33A4VCC

4A1

4A2GND4A34A43OE

SN54LVT162240...WD PACKAGESN74LVT162240...DGG, DGV, OR DL PACKAGE(TOP VIEW)

元器件交易网www.cecb2b.comSN54LVT162240, SN74LVT1622403.3-V ABT 16-BIT BUFFERS/DRIVERSWITH 3-STATE OUTPUTS SCBS719 – JULY 2000

2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

description (continued)The outputs, which are designed to source or sink up to 12 mA, include equivalent 22-Ω series resistors toreduce overshoot and undershoot.

When VCC is between 0 and 1.5 V, the devices are in the high-impedance state during power up or power down.

However, to ensure the high-impedance state above 1.5 V, 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.

These devices are fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitrydisables the outputs, preventing damaging current backflow through the devices when they are powered down.The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down,which prevents driver conflict.

The SN54LVT162240 is characterized for operation over the full military temperature range of –55°C to 125°C.The SN74LVT162240 is characterized for operation from –40°C to 85°C.

FUNCTION TABLE(each 4-bit buffer/driver)

INPUTSOUTPUT

OEAY

LHLLLHHXZ

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