74LVCH32245A
3.3VCMOS32-BITBUSTRANSCEIVERWITH3-STATEOUTPUTS
INDUSTRIALTEMPERATURERANGE
3.3V CMOS 32-BIT
74LVCH32245A
BUS TRANSCEIVER
WITH 3-STATE OUTPUTS,
5 VOLT TOLERANT I/O, BUS-HOLD
FEATURES:
DESCRIPTION:
• Typical tSK(o) (Output Skew) < 250ps
This 32-bit bus transceiver is built using advanced dual metal CMOS
technology. This high-speed, low power transceiver is ideal for asynchro-
nous communication between two busses (A and B). The Direction and
Output Enable controls are designed to operate the device as either four
independent 8-bit transceivers or one 32-bit transceiver. The direction
controlpins(DIR)controlthedirectionofdataflow. Theoutputenablepins
(OE) override the direction control and disable both ports. All inputs are
designed with hysteresis for improved noise margin.
• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
• VCC = 3.3V ± 0.3V, Normal Range
• VCC = 2.7V to 3.6V, Extended Range
• CMOS power levels (0.4μ W typ. static)
• All inputs, outputs, and I/O are 5V tolerant
• Supports hot insertion
• Available in 96-ball LFBGA package
Allpinscanbedrivenfromeither3.3Vor5Vdevices. Thisfeatureallows
the use of this device as a translator in a mixed 3.3V/5V supply system.
The LVCH32245A has been designed with a ±24mA output driver. This
driver is capable of driving a moderate to heavy load while maintaining
speedperformance
The LVCH32245A has “bus-hold” which retains the inputs’ last state
whenevertheinputgoestoahighimpedance. Thispreventsfloatinginputs
and eliminates the need for pull-up/down resistors.
DRIVE FEATURES:
• Balanced Output Drivers: ±24mA
• Reduced system switching noise
APPLICATIONS:
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems
FUNCTIONALBLOCKDIAGRAM
A3
J3
1DIR
3DIR
A4
A2
J4
J2
1
OE
3
OE
A5
J5
1A1
3A1
1B1
3
B
1
TO SEVEN OTHER CHANNNELS
TO SEVEN OTHER CHANNNELS
H3
E5
T3
N5
2
DIR
4DIR
T4
H4
E2
2
OE
4
OE
2
A1
4A1
N2
2
B
1
4B1
TO SEVEN OTHER CHANNNELS
TO SEVEN OTHER CHANNNELS
INDUSTRIAL TEMPERATURE RANGE
1
Apr.01.21