IDT74LVCH16543A_16 Datasheet, PDF (1/6 Pages) Integrated Device Technology – 3.3V CMOS 16-BIT REGISTERED TRANSCEIVER

IDT74LVCH16543A
3.3V CMOS 16-BIT REGISTERED TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS 16-BIT
IDT74LVCH16543A
REGISTERED TRANSCEIVER
WITH 3-STATE OUTPUTS,
5 VOLT TOLERANT I/O, BUS-HOLD
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 (0.4μ W typ. static)
• All inputs, outputs, and I/O are 5V tolerant
• Supports hot insertion
• Available in TSSOP package
DRIVE FEATURES:
• High Output Drivers: ±24mA
• Reduced system switching noise
APPLICATIONS:
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems
DESCRIPTION
The LVCH16543A 16-bit registered transceiver is built using advanced
dual metal CMOS technology. The LVCH16543A can be used as two 8-bit
transceivers or one 16-bit transceiver. Separate latch-enable (LEAB or
LEBA) and output-enable (OEAB or OEBA) inputs are provided for each
register to permit independent control in either direction of data flow. The
A-to-B enable (CEAB) input must be low in order to enter data from the A
port or to output data from the B port. LEAB controls the latch function. When
LEAB is low, the A to B latches are transparent. A subsequent low-to-high
transition of LEAB puts the A latches in the storage mode. OEAB performs
output enable function on the B port. Data flow from the B port to the A port
is similar but requires using CEBA, LEBA, and OEBA inputs. Flow-through
organization of signal pins simplifies layout. All inputs are designed with
hysteresis for improved noise margin.
All pins of this 16-bit registered transceiver 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 LVCH16543A has been designed with a ±24mA output driver. This
driver is capable of driving a moderate to heavy load while maintaining
speed performance.
The LVCH16543A 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.
FUNCTIONAL BLOCK DIAGRAM
1OEBA ⁵⁶
1CEBA ⁵⁴
1LEBA ⁵⁵
1OEAB ¹
1CEAB ³
1LEAB ²
C1
1A1 ⁵
1D
2OEBA ²⁹
2CEBA ³¹
2LEBA ³⁰
2OEAB ²⁸
2CEAB ²⁶
2LEAB ²⁷
52
1B1
2A1 ¹⁵
C1
42
1D
2B1
C1
C1
1D
1D
TO SEVEN OTHER CHANNELS
TO SEVEN OTHER CHANNELS
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
© 2016 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice.
JANUARY 2016
DSC-4612/6