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The ZT3243E Series devices are 3V powered EIA/TIA-232 and V.28/V.24 communication interfaces with low power requirements. They consist of three line drivers, five line receivers and the proprietary switch-capacitor regulated voltage converters. These devices operate from a single 3V to 5.5V power supply at the guaranteed data rate of 250K bits/sec with enhanced electrostatic discharge (ESD) protection in all RS232 I/O pins exceeding ±15kV IEC61000-4-2 Air Gap Discharge and ±8kV IEC61000-4-2 Contact Discharge. The ZT3243E Series feature the AUTOGREEN (patent pending) proprietary function which automatically powers down the on-chip regulated voltage converters and driver circuits when an RS-232 cable is disconnected from the host interface or when a connected peripheral device is turned off. Meets or Exceeds the EIA/TIA-232F and CCITT V.28/V.24 Specifications for Vcc at +3.3V ±10% and +5V ±10% Operations Interoperable with EIA/TIA-232 and adheres to EIA/TIA-562 down to a +2.7V power source Low quiescent current – 0.5mA typ., 1mA max Low shutdown current (where applicable) - 1µA typical, 10µA max Guaranteed data rate 250Kbps Proprietary Switch-Capacitor Regulated Voltage Converters (patent pending) Proprietary AUTOGREEN Power Saving (patent pending) Latch-up Free ESD Protection for RS-232 I/O’s ±15kV Human Body Model (HBM) ±15kV IEC61000-4-2 Air Gap Discharge ±8kV IEC61000-4-2 Contact Discharge Drop-in Replacements for MAX3243E, ICL3243E, ISL4243E, ST3243E and SP3243E High Data Rate at 1000Kbps Available on ZT3243F Series

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