IDT74ALVCH374
3.3VCMOSOCTALPOSITIVEEDGE-TRIGGEREDD-TYPE
INDUSTRIALTEMPERATURERANGE
3.3V CMOS OCTAL POSITIVE
IDT74ALVCH374
EDGE-TRIGGERED D-TYPE
FLIP-FLOP WITH 3-STATE
OUTPUTS AND BUS-HOLD
DESCRIPTION:
FEATURES:
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0.5 MICRON CMOS Technology
Thisoctalpostiveedge-triggeredD-typeflip-flopisbuiltusingadvanced
dual metal CMOS technology. The ALVCH374 device is particularly
suitableforimplementingbufferregisters,I/Oports,bidirectionalbusdrivers,
andworkingregisters.Onthepositivetransitionoftheclock(CLK)input,the
Qoutputs are settothe logiclevels atthe data (D)inputs.
Typical t (o) (Output Skew) < 250ps
SK
ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
VCC = 3.3V ±0.3V, Normal Range
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V
CC
= 2.7V to 3.6V, Extended Range
VCC = 2.5V ±0.2V
Abufferedoutput-enable(OE)inputcanbeusedtoplacetheeightoutputs
ineithera normallogicstate (highorlowlogiclevels)ora high-impedance
state.Inthehigh-impedancestate,theoutputsneitherloadnordrivethebus
lines significantly.The high-impedance state andincreaseddrive provide
thecapabilitytodrivebuslineswithoutinterfaceorpullupcomponents. OE
does notaffectinternaloperations ofthelatch.Olddatacanberetainedor
newdatacanbeenteredwhiletheoutputsareinthehigh-impedancestate.
CMOS power levels (0.4µW typ. static)
Rail-to-Rail output swing for increased noise margin
Available in SOIC, SSOP, QSOP, and TSSOP packages
Drive Features for ALVCH374:
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High Output Drivers: ±24mA
Suitable for heavy loads
The ALVCH374 has been designed with a ±24mA output driver. This
driver is capable of driving a moderate to heavy load while maintaining
speedperformance.
APPLICATIONS:
• 3.3V High Speed Systems
• 3.3Vandlowervoltagecomputingsystems
The ALVCH374 has a “bus-hold” which retains the inputs’ last state
wheneverthe inputbus goes toa highimpedance.This prevents floating
inputs andeliminates the needforpull-up/downresistors.
FUNCTIONALBLOCKDIAGRAM
1
OE
11
CLK
C1
1D
2
1Q
3
1D
TO SEVEN OTHER CHANNELS
INDUSTRIAL TEMPERATURE RANGE
MARCH1999
1
c
1999 Integrated Device Technology, Inc.
DSC-4473/-