SN28846

SERIAL DRIVER

SOCS024B – FEBRUARY 1991

Copyright

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POST OFFICE BOX 655303

description

The SN28846 serial driver is a monolithic CMOS

integrated circuit designed to drive the serial-reg-

ister gate (SRGn) and transfer-gate (TRG) inputs

of the Texas Instruments (TI

™) virtual-phase CCD

image sensors. The SN28846 interfaces a

user-defined timing generator to the CCD image

sensor; it receives TTL signals from the timing generator and outputs level-shifted signals to the image sensor.

The SN28846 contains three noninverting serial-gate drivers and one noninverting transfer-gate driver.

SRG3IN, and TRGIN are TTL compatible.

A high level on PD allows the SN28846 to operate normally with the level-shifted outputs following the inputs.

The SN28846 is available in a 20-pin surface-mount package and is characterized for operation from –20

°C

to 45

°C.

This device contains circuits to protect its inputs and outputs against damage due to high static voltages or electrostatic fields. These

circuits have been qualified to protect this device against electrostatic discharges (ESD) of up to 2 kV according to MIL-STD-883C,

Method 3015; however, precautions should be taken to avoid application of any voltage higher than maximum-rated voltages to these

high-impedance circuits. During storage or handling, the device leads should be shorted together or the device should be placed in

conductive foam. In a circuit, unused inputs should always be connected to an appropriated logic voltage level, preferably either VCC or ground.

Specific guidelines for handling devices of this type are contained in the publication

Guidelines for Handling Electrostatic-Discharge-Sensitive

(ESDS) Devices and Assemblies available from Texas Instruments.

TI is a trademark of Texas Instruments Incorporated.

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SEL0OUT

GND

PD

SRG3IN

SRG2IN

SRG1IN

TRGIN

NC

SEL1OUT

SEL0

NC

SRG3OUT

SRG2OUT

SRG1OUT

TRGOUT

SEL1

DW PACKAGE

(TOP VIEW)

NC – No internal connection

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.