MC145406D中文资料EIA-232-D/V.28 Driver/Receiver数据手册恩XP规格书

描述 Description

OverviewThe MC145406 is a silicon-gate CMOS IC that combines 3 drivers and 3 receivers to fulfill the electrical specifications of standards EIA-232-D and CCITT V.28. The drivers feature true TTL input compatibility, slew-rate limited output, 300 Ω power-off source impedance, and output typically switching to within 25% of the supply rails. The receivers can handle up to +25V while presenting 3 to 7 kΩ impedance. Hysteresis in the receiver 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-D and V.28 applications.

特性 Features

•Drivers

•±5 to ±12V supply range

•300 Ω power-off source impedance

•Output current limiting

•TTL compatible

•Maximum slew rate = 30V/μs

•
Receivers


•±25V input voltage range over the full supply range

•3 to 7 kΩ input impedance

•Hysteresis on input switchpoint

•
General


•Very low supply currents for long battery life

•Operation is independent of power supply sequencing

应用 Application

Modem interface

Voice/data telephone interface

Lap-top computers

UART interface