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The MC145408 is a silicon-gate CMOS IC that combines both the transmitter and receiver to fulfill the electrical specifications of EIA Standard 232-E and CCITT V.28. The drivers feature true TTL input compatibility, slew rate limiting outputs, 300 ohm power-off source impedance, and output typically switching to within 25% of the supply rails. The receivers can handle up to +/- 25 V while presenting 3 to 7 k ohms impedance. Hysteresis in the receivers aids in the reception of noisy signals. By combining both drivers and receivers in a single CMOS chip, these devices provide efficient, low-power solutions for both EIA-232-E and V.28 applications.
See related devices: MC145403 (3 x 5), MC145404 (4 x 4), MC145405 (5 x 3)