|Datasheet||Download MC145705D datasheet
5 Volt Only Driver/Receiver with an Integrated Standby Mode
The MC145705/06/07 are a series of silicongate CMOS transceiver ICs that fulfill the electrical specifications of EIA232E and CCITT V.28 while operating from a single 5 V power supply. These transceiver series are high performance and low power consumption devices that are equipped with standby and output enable function. A voltage doubler and inverter convert the 10 V. This is accomplished through an onboard 20 kHz oscillator and four inexpensive external electrolytic capacitors. The MC145705 is composed of two drivers and three receivers, the MC145706 has three drivers and two receivers, and the MC145707 has three drivers and three receivers. These drivers and receivers are virtually identical to those of the MC145407. Available Driver/Receiver CombinationsMC145706DW MC145707DW Plastic DIP Plastic DIP Plastic DIP SOG Package SOG Package SOG Package
Drivers: ± 7.5 Output Swing 300 PowerOff Impedance Output Current Limiting TTL and CMOS Compatible Inputs ThreeState Outputs During Standby Mode Hold Output OFF (MARK) State by TxEN Pin Receivers: 25 V Input Range 7 k Input Impedance 0.8 V Hysteresis for Enhanced Noise Immunity ThreeState Outputs During Standby Mode Charge Pumps: 10 V Dual Charge Pump Architecture Supply Outputs Capable of Driving Three Drivers on the MC145403/06 Simultaneously Requires Four Inexpensive Electrolytic Capacitors OnChip 20 kHz Oscillators
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.
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