PI74ALVCH162268A Pericom Semiconductor, PI74ALVCH162268A Datasheet

PI74ALVCH162268A

Manufacturer Part Number

PI74ALVCH162268A

Description

Manufacturer

Pericom Semiconductor

Datasheet

1.PI74ALVCH162268A.pdf (6 pages)

Specifications of PI74ALVCH162268A

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Product Features

Logic Block Diagram

PI74ALVCH162268 is designed for low voltage operation

Hysteresis on all inputs

Typical V

< 0.8V at V

Typical V

B-port outputs have equivalent 26 series resistors,

no external resistors are required.

Bus Hold retains last active bus state during 3-state

eliminates the need for external pullup resistors

Industrial operation at –40°C to +85°C

Packages available:

– 56-pin 240 mil wide plastic TSSOP (A56)

< 2.0V at V

= 2.3V to 3.6V

06-0138

OLP

OHV

(Output Ground Bounce)

= 3.3V, T

(Output V

= 3.3V, T

= 25°C

Undershoot)

12-Bit To 24-Bit Registered Bus Exchanger

Product Description

Pericom Semiconductor’s PI74ALVCH series of logic circuits are

produced in the Company’s advanced 0.5 micron CMOS

technology, achieving industry leading speed.

This 12-bit to 24-bit registered bus exchanger is designed for 2.3V

to 3.6V V

The PI74ALVCH162268 is used for applications in which data

must be transferred from a narrow high-speed bus to a wide, lower

frequency bus.

The device provides synchronous data exchange between the two

ports. Data is stored in the internal registers on the low-to-high

transition of the clock (CLK) input when the appropriate clock

enable (CLKEN) inputs are low. The select (SEL) line is

synchronous with CLK and selects 1B or 2B input data for the A

outputs.

For data transfer in the A-to-B direction, a two stage pipeline is

provided in the A-to-1B path, with a single storage register in the

A-to-2B path. Proper control of these inputs allows two sequential

12-bit words to be presented synchronously as a 24-bit word on the

B-port. Data flow is controlled by the active-low output enables

(OEA, OEB). These control terminals are registered so bus direction

changes are synchronous with CLK.

The B outputs, which are designed to sink up to 12mA, include

equivalent 26 resistors to reduce overshoot and undershoot.

To ensure the high-impedance state during power up or power

down, a clock pulse should be applied as soon as possible and OE

should be tied to V

of the resistor is determined by the current-sinking capability of

the driver. Because OE is being routed through a register, the

active state of the outputs cannot be determined prior to the arrival

of the first clock pulse.

Active bus-hold circuitry is provided to hold unused or floating

data inputs at a valid logic level.

operation.

through a pullup resistor, the minimum value

PI74ALVCH162268

with 3-State Outputs

PS8352A

07/22/05

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PI74ALVCH162268A Summary of contents

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... PI74ALVCH162268 12-Bit To 24-Bit Registered Bus Exchanger with 3-State Outputs Product Description Pericom Semiconductor’s PI74ALVCH series of logic circuits are produced in the Company’s advanced 0.5 micron CMOS technology, achieving industry leading speed. This 12-bit to 24-bit registered bus exchanger is designed for 2. ...

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PI74ALVCH162268A Pericom Semiconductor, PI74ALVCH162268A Datasheet

PI74ALVCH162268A

Specifications of PI74ALVCH162268A

Related parts for PI74ALVCH162268A

PI74ALVCH162268A Summary of contents

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