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SCN2661

Enhanced programmable communications interface (EPCI)

Philips Electronics 

Philips Semiconductors

Enhanced programmable communications

interface (EPCI)

Product specification

SCN2661/SCN68661

ORDERING CODE

PACKAGES

28-Pin Ceramic Dual In-Line Package (cerdip) 0.6” Wide

28-Pin Plastic Dual In-Line Package (DIP) 0.6” Wide

28-Pin Plastic Lead Chip Carrier (PLCC)

BLOCK DIAGRAM

VCC = +5V +5%

Commercial

0°C to +70°C

Industrial

-40°C to +85°C

SCN2661BC1F28

SCN2661CC1F28

SCN2661BA1F28

SCN2661CA1F28

SCN2661AC1N28

SCN2661BC1N28

SCN2661CC1N28

Contact Factory

SCN2661AC1A28

SCN2661BC1A28

SCN2661CC1A28

Contact Factory

DWG #

0589B

SOT117-2

SOT261-3

DATA BUS

D0–D7

DATA BUS

BUFFER

SNE/DLE CONTROL

SYN 1 REGISTER

SYN 2 REGISTER

DLE REGISTER

RESET

A0

A1

R/W

CE

BRCLK

TxC/SYNC

RxC/BKDET

DSR

DCD

CTS

RTS

DTR

TxEMT/*

DSCHG

NOTES:

* Open–drain output pin.

OPERATION CONTROL

MODE REGISTER 1

MODE REGISTER 2

COMMAND REGISTER

STATUS REGISTER

BAUD RATE

GENERATOR

AND

CLOCK CONTROL

MODEM

CONTROL

TRANSMITTER

TRANSMIT DATA

HOLDING REGISTER

TRANSMIT

SHIFT REGISTER

RECEIVER

RECEIVE DATA

HOLDING REGISTER

RECEIVE

SHIFT REGISTER

TxRDY*

TxD

RxRDY*

RxD

SD00078

ABSOLUTE MAXIMUM RATINGS1

SYMBOL

TA

TSTG

PARAMETER

Operating ambient temperature2

Storage temperature

All voltages with respect to ground3

RATING

Note 4

-65 to +150

-0.5 to +6.0

UNIT

°C

°C

V

NOTES:

1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and

functional operation of the device at these or at any other condition above those indicated in the operation section of this specification is not

implied.

2. For operating at elevated temperatures, the device must be derated based on +150°C maximum function temperature.

3. This product includes circuitry specifically designed for the protection of its internal devices from the damaging effect of excessive static

charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying any voltages larger than the rated maxima.

4. Over recommended free-air operating temperature range and supply voltage range unless otherwise specified. For conditions shown as MIN

or MAX, use the appropriate value specified under recommended operating conditions.

1994 Apr 27

2

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