MC145407数据手册恩XP中文资料规格书

描述 Description

Overview The MC145407 has been discontinued. Suggested replacement: none.The MC145407 is a silicon-gate CMOS IC that combines three drivers and three receivers to fulfill theelectrical specifications of EIA-232-E and CCITT V.28 while operating from a single 5 V power supply.A voltage doubler and inverter convert the 5 V to +/- 10 V. This is accomplished through an on-board20 kHz oscillator and four inexpensive external electrolytic capacitors. The three drivers and threereceivers of the MC145407 are virtually identical to those of the MC145406. Therefore, forapplications requiring more than three drivers and/or three receivers, an MC145406 can be poweredfrom an MC145407, since the MC145407 charge pumps have been designed to guarantee +/- 5 V at theoutput of up to six drivers. Thus, the MC145407 provides a high-performance, low-power, standalonesolution or, with the MC145406, a 5 V only, high-performance two-chip solution.

特性 Features

Drivers

\t•+/- 7.5 V Output Swing
\t•300 ohm Power-Off Impedance
\t•Output Current Limiting
\t•TTL and CMOS Compatible Inputs
\t•Slew Rate Range Limited from 4 V/microsecond to 30 V/microsecond

Receivers

\t•25 V Input Range
\t•3 to 7 k ohm Input Impedance
\t•0.8 V Hysteresis for Enhanced Noise Immunity

Charge Pumps

\t•5 V to +/- 10 V Dual Charge Pump Architecture
\t•Supply Outputs Capable of Driving Three On-Chip Drivers and Three Drivers
\ton the Mc145406 Simultaneously
\t•Requires Four Inexpensive Electrolytic Capacitors
\t•On-Chip 20 kHz Oscillator