ADM202JNZ

Overview

The ADM202JNZ is a high-speed, single-supply CMOS RS-232 driver/receiver manufactured by Analog Devices Inc. It operates from a single 5 V power supply and integrates on-chip charge pumps to generate ±10 V output swings using small 0.1 µF external capacitors. The device features two drivers and two receivers, supporting data rates up to 120 kB. It meets TIA/EIA-232-E and V.28 specifications with low power consumption of 2.5 mA typical current. The receiver inputs provide overvoltage protection up to ±30 V, and the component is housed in a 16-lead Plastic Dual In-Line Package (PDIP) suitable for commercial temperature ranges.

Feature Summary

• Integrates efficient on-chip charge pumps to generate required RS-232 voltage levels from a single 5 V supply without external transformers.
• Features Schmitt-triggered receivers with hysteresis to ensure error-free reception of noisy signals or slow transition times.
• Includes internal pull-up resistors on driver inputs and pull-down resistors on receiver inputs to define logic states when unconnected.
• Provides robust overvoltage protection on receiver inputs, allowing continuous withstand of voltages exceeding ±30 V.

Applications

• Computer serial communication ports
• Peripheral interface connections
• Modem link interfaces
• Printer port connections
• Industrial instrument control systems

Procurement Notes

Verify the specific package type and RoHS compliance status against the manufacturer's latest ordering guide before procurement. Confirm that the supplier provides genuine components with traceable documentation. Ensure the delivery matches the specified commercial temperature range requirements for the intended application environment.

Selection Notes

Select this component when a single 5 V digital supply is available and minimal external capacitance is desired for space-constrained designs. It is appropriate for applications requiring full duplex RS-232 communication at speeds up to 120 kB. Consider the PDIP package availability if through-hole mounting is required for the specific PCB layout constraints.

Part Context

The ADM202 belongs to the ADM202 series of RS-232 transceivers designed for compatibility with TTL and CMOS logic families. It serves as a bridge between microprocessor systems and standard serial communication interfaces. The J suffix indicates the commercial temperature grade, while NZ denotes RoHS compliance. This part is part of Analog Devices' portfolio of interface solutions for legacy serial protocols.

Replacement Considerations

Direct pin-compatible replacements within the same family include the ADM202JRN and ADM202JRWZ variants, which offer surface-mount packaging options. Verify that any substitute maintains the 120 kB baud rate capability and single-supply operation characteristics required by the original design.