INDUSTRIALTEMPERATURERANGE

IDT74ALVCH16374

3.3VCMOS16-BITEDGE-TRIGGEREDD-TYPELATCHWITH3-STATEOUTPUTS

1

APRIL 1999

INDUSTRIAL TEMPERATURE RANGE

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

© 1999 Integrated Device Technology, Inc.

DSC-4564/1

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, TSSOP, and TVSOP packages

FUNCTIONAL BLOCK DIAGRAM

IDT74ALVCH16374

3.3V CMOS 16-BIT EDGE-

TRIGGERED D-TYPE

LATCH WITH 3-STATE

OUTPUTS AND BUS-HOLD

DESCRIPTION:

This16-bitedge-triggeredD-typeflip-flopisbuiltusingadvanceddualmetal

CMOStechnology.TheALVCH16374isparticularlysuitableforimplementing

bufferregisters,I/Oports,bidirectionalbusdrivers,andworkingregisters.Itcan

beusedastwo8-bitflip-flopsorone16-bitflip-flop.Onthepositivetransitionof

theclock(CLK)input,theQoutputsoftheflip-floptakeonthelogiclevelsatthe

data(D)inputs.OEcanbeusedtoplacetheeightoutputsineitheranormallogic

state(highorlowlogiclevels)orahigh-impedancestate.Inthehigh-impedance

state, the outputs neither load nor drive the bus lines significantly. The high-

impedancestateandtheincreaseddriveprovidethecapabilitytodrivebuslines

without need for interface or pullup components. OE does not affect internal

operationsoftheflip-flop.Olddatacanberetainedornewdatacanbeentered

whiletheoutputsareinthehigh-impedancestate.

The ALVCH16374 has been designed with a ±24mA output driver. This

driveriscapableofdrivingamoderatetoheavyloadwhilemaintainingspeed

performance.

The ALVCH16374 has “bus-hold” which retains the inputs’ last state

whenevertheinputgoestoahighimpedance.Thispreventsfloatinginputsand

eliminatestheneedforpull-up/downresistor.

DRIVE FEATURES:

• High Output Drivers: ±24mA

• Suitable for heavy loads

1

OE

C1

1D

1

47

1

CLK

1

TO 7 OTHER CHANNELS

2

OE

2

36

2

CLK

2

TO 7 OTHER CH ANNE LS

1

48

2

24

25

13

C1

1D

APPLICATIONS:

• 3.3V high speed systems

• 3.3V and lower voltage computing systems