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SN65C3221E, SN75C3221E

3-V TO 5.5-V SINGLE-CHANNEL RS-232 1-Mbit/s LINE DRIVER/RECEIVER

WITH

±15-kV IEC ESD PROTECTION

SLLS694A – NOVEMBER 2005 – REVISED DECEMBER 2005

ORDERING INFORMATION

ORDERABLE PART NUMBER

TOP-SIDE MARKING

SSOP – DB

Reel of 2000

SN75C3221EDBR

CA3221

–0

°C to 70°C

Tube of 90

SN75C3221EPW

TSSOP – PW

CA3221

Reel of 2000

SN75C3221EPWR

SSOP – DB

Reel of 2000

SN65C3221EDBR

CB3221

–40

°C to 85°C

Tube of 90

SN65C3221EPW

TSSOP – PW

CB3221

Reel of 2000

SN65C3221EPWR

(1)

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

www.ti.com/sc/package.

FUNCTION TABLES

abc

INPUTS

OUTPUT

DRIVER STATUS

VALID RIN

DOUT

DIN

FORCEON

FORCEOFF

RS-232 LEVEL

X

X

L

X

Z

Powered off

L

H

H

X

H

Normal operation with

auto-powerdown disabled

H

H

H

X

L

L

L

H

Yes

H

Normal operation with

auto-powerdown enabled

H

L

H

Yes

L

L

L

H

No

Z

Powered off by

auto-powerdown feature

H

L

H

No

Z

(1)

H = high level, L = low level, X = irrelevant, Z = high impedance

abc

INPUTS

OUTPUT

VALID RIN

ROUT

RIN

EN

RS-232 LEVEL

L

L

X

H

H

L

X

L

X

H

X

Z

Open

L

No

H

(1)

H = high level, L = low level, X = irrelevant, Z = high impedance

(off), Open = disconnected input or connected driver off

2