Datasheet > 145406

145406

更新时间： 2022-11-24 21:16:21

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		驱动器
页数	文件大小	规格书
12页	159K
描述
Driver/Receiver(EIA 232-E and CCITT V.28(Formerly RS-232-D)

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145406 数据手册

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by MC145406/D

SEMICONDUCTOR TECHNICAL DATA

EIA 232–E and CCITT V.28 (Formerly RS–232–D)

P SUFFIX

PLASTIC

CASE 648

The MC145406 is a silicon–gate CMOS IC that combines three drivers

and three receivers to fulfill the electrical specifications of standards

EIA 232–E and CCITT V.28. The drivers feature true TTL input

compatibility, slew–rate–limited output, 300–Ω power–off source imped-

ance, and output typically switching to within 25% of the supply rails. The

receivers can handle up to ± 25 V while presenting 3 to 7 kΩ impedance.

Hysteresis in the receivers aids reception of noisy signals. By combining

both drivers and receivers in a single CMOS chip, the MC145406 provides

efficient, low–power solutions for EIA 232–E and V.28 applications.

DW SUFFIX

SOG

CASE 751G

Drivers

•

± 5 V to ±12 V Supply Range

300–Ω Power–Off Source Impedance

Output Current Limiting

TTL Compatible

Maximum Slew Rate = 30 V/µs

SD SUFFIX

SSOP

CASE 940B

Receivers

•

± 25 V Input Voltage Range When V

= 12 V, V

= – 12 V

3 to 7 kΩ Input Impedance

Hysteresis on Input Switchpoint

PIN ASSIGNMENT

BLOCK DIAGRAM

RECEIVER

DO1

DI1

Rx1

Tx1

15 k

Ω

–

DO2

5.4 k

Rx2

Tx2

1.0 V

1.8 V

DI2

DO3

Rx3

Tx3

HYSTERESIS

DI3

DRIVER

GND

D = DRIVER

R = RECEIVER

300

Ω

–

LEVEL

SHIFT

1.4 V

*Protection circuit

REV 4

1/95

Motorola, Inc. 1995

MOTOROLA

MC145406

12 3 4 5 6 7...12

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