PI74ALVCH162601A Pericom Semiconductor, PI74ALVCH162601A Datasheet

PI74ALVCH162601A

Manufacturer Part Number

PI74ALVCH162601A

Description

IC UNIV BUS TXRX 18BIT 56TSSOP

Manufacturer

Pericom Semiconductor

Series

74ALVCHr

Datasheet

1.PI74ALVCH162601A.pdf (5 pages)

Specifications of PI74ALVCH162601A

Logic Type

Universal Bus Transceiver

Number Of Circuits

18-Bit

Current - Output High, Low

32mA, 64mA; -12mA, 12mA

Voltage - Supply

2.3 V ~ 3.6 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

56-TSSOP

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

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Logic Block Diagram

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.

The PI74ALVCH162601 uses D-type latches and D-type flip-flops

with 3-state outputs to allow data flow in transparent, latched, and

clocked modes.

Data flow in each direction is controlled by Output Enable (OEAB

and OEBA), Latched Enable (LEAB and LEBA), and Clock (CLKAB

and CLKBA) inputs. The clock can be controlled by the Clock Enable

(CLKENAB and CLKENBA) inputs. For A-to-B data flow, the device

operates in the transparent mode when LEAB is HIGH. When LEAB

is LOW, the A data is latched if CLKAB is held at a high or low logic

level. If LEAB is low, the A-bus is stored in the latch/flip-flop on the

low-to-high transition of CLKAB. When OEAB is low, the outputs

are active. When OEAB is HIGH, the outputs are in the high-

impedance state.

Data flow for B to A is similar to that of A to B but uses OEBA, LEBA,

CLKBA, and CLKENBA.

To reduce overshoot and undershoot, the B-port outputs include

26 series resistors.

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

down, OE should be tied to V

minimum value of the resistor is determined by the current-sinking

capability of the driver.

The PI74ALVCH162601 has “Bus Hold” which retains the data

input’s last state whenever the data input goes to high-impedance

preventing “floating” inputs and eliminating the need for pullup/

down resistors.

18-Bit Universal Bus Transceiver

PI74ALVCH162601

With 3-State Outputs

through a pull-up resistor; the

PS8093C 12/26/97

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PI74ALVCH162601A Summary of contents

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... PI74ALVCH162601 18-Bit Universal Bus Transceiver 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. The PI74ALVCH162601 uses D-type latches and D-type flip-flops with 3-state outputs to allow data flow in transparent, latched, and clocked modes ...

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... See test circuit and wave forms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com 18-BIT UNIVERSAL BUS TRANSCEIVER (1) Pericom Semiconductor Corporation 5 PI74ALVCH162601 PS8093C 12/26/97 ...

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