INDUSTRIALTEMPERATURERANGE

IDT74ALVCH162373

3.3V CMOS 16-BIT TRANSPARENT D-TYPE LATCH WITH 3-STATE OUTPUTS

1

JUNE 2016

INDUSTRIAL TEMPERATURE RANGE

IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.

© 2016 Integrated Device Technology, Inc.

DSC-4575/7

FEATURES:

• 0.5 MICRON CMOS Technology

• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using

machine model (C = 200pF, R = 0)

• CMOS power levels (0.4

μμμμμ W typ. static)

• Rail-to-Rail output swing for increased noise margin

• Available in SSOP and TSSOP packages

FUNCTIONAL BLOCK DIAGRAM

DESCRIPTION:

This16-bittransparentD-typelatchisbuiltusingadvanceddualmetalCMOS

technology.TheALVCH162373isparticularlysuitableforimple-mentingbuffer

registers,I/Oports,bidirectionalbusdrivers,andworkingregisters.Thisdevice

canbeusedastwo8-bitlatchesorone16-bitlatch.Whenthelatchenable(LE)

inputishigh,theQoutputsfollowthedata(D)inputs.WhenLEistakenlow,the

Q outputs are latched at the levels set up at the D inputs.

Abufferedoutput-enable(OE)canbeusedtoplacetheeightoutputsineither

anormallogicstate(highorlowlogiclevels)orahigh-impedancestate.Inthe

high-impedancestate,theoutputsneitherloadnordrivethebuslinessignifi-

cantly.Thehigh-impedancestateandtheincreaseddriveprovidethecapability

todrivebuslineswithoutneedforinterfaceorpullupcomponents.OEdoesnot

affectinternaloperationsofthelatch.Olddatacanberetainedornewdatacan

beeneteredwhiletheoutputsareinthehigh-impedancestate.

TheALVCH162373hasseriesresistorsinthedeviceoutputstructurewhich

will significantly reduce line noise when used with light loads. This driver has

been designed to drive ±12mA at the designated threshold levels.

The ALVCH162373 has “bus-hold” which retains the inputs’ last state

whenevertheinputgoestoahighimpedance.Thispreventsfloatinginputsand

eliminatestheneedforpull-up/downresistor.

DRIVE FEATURES:

• Balanced Output Drivers: ±12mA

• Low switching noise

IDT74ALVCH162373

3.3V CMOS 16-BIT TRANS-

PARENT D-TYPE LATCH

WITH 3-STATE OUTPUTS

AND BUS-HOLD

1

OE

C1

1D

1

47

1

LE

1

TO 7 OTHER CHANNELS

2

OE

2

36

2

LE

2

TO 7 OTHER CHANNELS

1

48

2

24

25

13

C1

1D

APPLICATIONS:

• 3.3V high speed systems

• 3.3V and lower voltage computing systems