
INDUSTRIAL TEMPERATURE RANGE
IDT74LVCH32245A
3.3V CMOS 32-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
1
FEBRUARY 2016INDUSTRIAL TEMPERATURE RANGE
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
©2016 Integrated Device Technology, Inc. DSC-4767/5
FEATURES:
• Typical tSK(o) (Output Skew) < 250ps
• 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 (0.4μμ
μμ
μ W typ. static)
• All inputs, outputs, and I/O are 5V tolerant
• Supports hot insertion
• Available in 96-ball LFBGA package
FUNCTIONAL BLOCK DIAGRAM
DRIVE FEATURES:
• Balanced Output Drivers: ±24mA
• Reduced system switching noise
APPLICATIONS:
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems
IDT74LVCH32245A
DESCRIPTION:
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
control pins (DIR) control the direction of data flow. The output enable pins
(OE) override the direction control and disable both ports. All inputs are
designed with hysteresis for improved noise margin.
All pins can be driven from either 3.3V or 5V devices. This feature allows
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
speed performance
The LVCH32245A has “bus-hold” which retains the inputs’ last state
whenever the input goes to a high impedance. This prevents floating inputs
and eliminates the need for pull-up/down resistors.
3.3V CMOS 32-BIT
BUS TRANSCEIVER
WITH 3-STATE OUTPUTS,
5 VOLT TOLERANT I/O, BUS-HOLD
1
DIR
1
A
1
1
B
1
1
OE
TO SEVEN OTHER CHANNNELS
3
DIR
3
A
1
3
B
1
3
OE
TO SEVEN OTHER CHANNNELS
2
DIR
2
A
1
2
B
1
2
OE
TO SEVEN OTHER CHANNNELS
4
DIR
4
A
1
4
B
1
4
OE
TO SEVEN OTHER CHANNNELS
A3
A5
H3
E5
A4
A2
H4
E2
J3
J5
J4
J2
T3
N5
T4
N2