IDT74LVCH16260APF datasheet, PDF

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IDT74LVCH16260APF: Description3.3V CMOS 12-BIT TRI-PORT BUS EXCHANGER WITH 5 VOLT TOLERANT I/O AND BUS-HOLD; File Size92KB，7 Pages; ManufacturerIDT (Integrated Device Technology, Inc.); Websitehttp://www.idt.com/

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IDT74LVCH16260APF Overview

3.3V CMOS 12-BIT TRI-PORT BUS EXCHANGER WITH 5 VOLT TOLERANT I/O AND BUS-HOLD

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IDT74LVCH16260A

3.3V CMOS 12-BIT TRI-PORT BUS EXCHANGER WITH 5 VOLT I/O

EXTENDED COMMERCIAL TEMPERATURE RANGE

3.3V CMOS 12-BIT

TRI-PORT BUS EXCHANGER

WITH 5 VOLT TOLERANT I/O

AND BUS-HOLD

FEATURES:

Typical

SK(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

– V

= 3.3V ±0.3V, Normal Range

– V

= 2.7V to 3.6V, Extended Range

– CMOS power levels (0.4µ W typ. static)

– All inputs, outputs and I/O are 5 Volt tolerant

– Supports hot insertion

Drive Features for LVCH16260A:

– High Output Drivers: ±24mA

– Reduced system switching noise

–

IDT74LVCH16260A

bus multiplexer/transceiver for use in high-speed microprocessor applica-

tions. This bus exchanger supports memory interleaving with latched out-

puts on the B ports and address multiplexing with latched inputs on the B

ports.

The LVCH16260A tri-port bus exchanger has three 12-bit ports. Data

may be transferred between the A port and either/both of the B ports. The

latch enable (LE1B, LE2B, LEA1B and LEA2B) inputs control data storage.

When a latch-enable input is high, the latch is transparent. When a latch-

enable input is low, the data at the input is latched and remains latched until

the latch enable input is returned high. Independent output enables (OE1B

and

OE2B)

allow reading from one port while writing to the other port.

All pins of the 12-bit Bus Exchanger can be driven from either 3.3V or

5V devices. This feature allows the use of the device as a translator in a

mixed 3.3V/5V supply system.

The LVCH16260A has been designed with a ±24mA output driver. The

driver is capable of driving a moderate to heavy load while maintaining

speed performance.

The LVCH16260A 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.

APPLICATIONS:

• 5V and 3.3V mixed voltage systems

• Data communication and telecommunication systems

DESCRIPTION:

The LVCH16260A tri-port bus exchanger is built using advanced dual

metal CMOS technology. The LVCH16260A is a high-speed 12-bit latched

Functional Block Diagram

OE1B

LEA1B

A-1B

LATCH

1:12

LE1B

1B-A

LATCH

SEL

OEA

1:12

LE2B

2B-A

LATCH

LEA2B

A-2B

LATCH

1:12

OE2B

EXTENDED COMMERCIAL TEMPERATURE RANGE

1999 Integrated Device Technology, Inc.

MARCH 1999

DSC-4229/1

IDT74LVCH16260APF Related Products

	IDT74LVCH16260APF	IDT74LVCH16260APA	IDT74LVCH16260A	IDT74LVCH16260APV
Description	3.3V CMOS 12-BIT TRI-PORT BUS EXCHANGER WITH 5 VOLT TOLERANT I/O AND BUS-HOLD	3.3V CMOS 12-BIT TRI-PORT BUS EXCHANGER WITH 5 VOLT TOLERANT I/O AND BUS-HOLD	3.3V CMOS 12-BIT TRI-PORT BUS EXCHANGER WITH 5 VOLT TOLERANT I/O AND BUS-HOLD	3.3V CMOS 12-BIT TRI-PORT BUS EXCHANGER WITH 5 VOLT TOLERANT I/O AND BUS-HOLD

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