Legacy Device: Motorola MC145406
The ML145406 is a siliconâgate CMOS IC that combines three drivers and three receivers to fulfill the electrical specifications of standards EIA 232âE and CCITT V.28. The drivers feature true TTL input compatibility, slewârateâlimited output, 300â⦠powerâoff 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⦠impedance. Hysteresis in the receivers aids reception of noisy signals. By combining both drivers and receivers in a single CMOS chip, the ML145406 provides efficient, lowâpower solutions for EIA 232âE and V.28 applications.
This device offers the following performance features:
⢠Operating Temperature Range = TA â40° to +85°C
Drivers
⢠± 5 V to ±12 V Supply Range
⢠300â⦠PowerâOff Source Impedance
⢠Output Current Limiting
⢠TTL Compatible
⢠Maximum Slew Rate = 30 V/µs
Receivers
⢠± 25 V Input Voltage Range When VDD = 12 V, VSS = â 12 V
⢠3 to 7 k⦠Input Impedance
⢠Hysteresis on Input Switchpoint
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