IDT74LVCH16540A
3.3VCMOS16-BITBUFFER/DRIVERWITH3-STATEOUTPUTS
EXTENDEDCOMMERCIALTEMPERATURERANGE
IDT74LVCH16540A
3.3V CMOS16-BIT
BUFFER/DRIVER WITH 3-STATE
OUTPUTS, 5 VOLT TOLERANT I/O
AND BUS-HOLD
DESCRIPTION:
This 16-bit buffer/driver is built using advanced dual metal CMOS
technology. The 3-state control gate is a 2-input AND gate with active-low
inputs so that if either output-enable (OE1 or OE2) input is high, all
correspondingoutputsareinthehigh-impedancestate.Toensurethehigh-
impedancestateduringpoweruporpowerdown,OEshouldbetiedtoVcc
through a pullup resistor; the minimum value of the resistor is determined
by the current-sinking capabiltiy of the driver.
FEATURES:
–
–
Typical tSK(0) (Output Skew) < 250ps
ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
0.635mm pitch SSOP, 0.50mm pitch TSSOP
and 0.40mm pitch TVSOP packages
Extended commercial range of -40°C to +85°C
VCC = 3.3V ±0.3V, Normal Range
–
–
–
–
–
–
–
VCC = 2.7V to 3.6V, Extended Range
CMOS power levels (0.4µW typ. static)
All inputs, outputs and I/O are 5 Volt tolerant
Supports hot insertion
All pins of this 16-bit buffer/driver can be driven from either 3.3V or 5V
devices. Thisfeatureallowstheuseofthisdeviceasatranslatorinamixed
3.3V/5V supply system.
Drive Features for LVCH16540A:
The LVCH16540A has been designed with a ±24mA output driver. The
driver is capable of driving a moderate to heavy load while maintaining
speedperformance.
–
–
High Output Drivers: ±24mA
Reduced system switching noise
APPLICATIONS:
The LVCH16540A has “bus-hold” which retains the inputs’ last state
whenevertheinputgoestoahighimpedance. Thispreventsfloatinginputs
and eliminates the need for pull-up/down resistors.
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems
FUNCTIONALBLOCKDIAGRAM
1
24
1OE1
2OE1
48
25
1OE2
2OE2
47
36
2
13
1Y1
2Y1
1A1
2A1
TO SEVEN OTHER CHANNELS
TO SEVEN OTHER CHANNELS
EXTENDED COMMERCIAL TEMPERATURE RANGE
OCTOBER 1999
1
c
1999 Integrated Device Technology, Inc.
DSC-4622/-