Diodes Incorporated AZ75232GTR-G1

Overview

AZ75232GTR-G1 from BCD Semiconductor is a 3-driver/5-receiver RS-232 transceiver IC compliant with EIA/TIA-232-F and ITU v.28 standards, operating at ±7.5–±15 V supply rails, supporting up to 120 kbit/s data rate, and housed in a green RoHS-compliant TSSOP-20 package for 9-pin serial interface bridging between UARTs and DB9 connectors.

For engineers reviewing the AZ75232GTR-G1 datasheet, AZ75232GTR-G1 pinout, AZ75232GTR-G1 application, or AZ75232GTR-G1 equivalent, this device delivers verified flow-through pinout layout, dual-supply driver/receiver operation, TTL/CMOS-to-RS-232 level translation, and industrial-grade temperature range (–40°C to +85°C) for legacy serial interface design and replacement.

Technical Context

The AZ75232GTR-G1 integrates three drivers and five receivers on a single die, each driver accepting TTL/CMOS inputs (VIH = 1.9 V, VIL = 0.8 V) and delivering ±6–±7.5 V RS-232 outputs into 3 kΩ loads, while each receiver accepts ±30 V RS-232 inputs and outputs 5 V TTL/CMOS logic levels with hysteresis (VIT+ = 1.75–2.3 V, VIT− = 0.75–1.25 V).

It uses independent supply domains: VDD/VSS (±7.5–±15 V) for drivers and VCC (4.5–5.5 V) for receivers, enabling mixed-voltage system interfacing; propagation delays are tPLH ≤ 500 ns (driver), tPHL ≤ 175 ns (driver), and tPLH ≤ 250 ns (receiver) under standard load conditions.

Key Specifications

Pinout & Package

Package: TSSOP-20 (6.4 mm × 4.4 mm, 0.65 mm pitch), green RoHS-compliant, rated for –40°C to +85°C ambient operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar RS-232 transceiver applications.

Compared with MAX3232ESE+ and SP3232EEN-L, the AZ75232GTR-G1 uniquely delivers full 3×5 RS-232 signal coverage, flow-through layout, and true dual-supply operation - making it the only drop-in solution for legacy 9-pin serial port designs requiring industrial reliability and pin-complete functionality.

Availability

AZ75232GTR-G1 is available at Aetrix Electronics and suitable for industrial motherboard serial interfaces, legacy peripheral adapter cards, modem/fax machine interfaces, and programmable logic controller (PLC) serial ports requiring stable component supply and long-term lifecycle assurance.

Supply support for AZ75232GTR-G1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

BCD Semiconductor Manufacturing Limited is a Shanghai-based analog and mixed-signal IC designer specializing in high-reliability interface, power management, and automotive-grade components.

The AZ75232 belongs to BCD's RS-232 transceiver product line, engineered specifically for industrial and legacy communications systems requiring full 9-pin signal support, wide temperature operation, and robust noise immunity.

FAQ

What supply voltages does the AZ75232GTR-G1 require?

The AZ75232GTR-G1 requires three supplies: VDD (+7.5 V to +15 V) and VSS (–15 V to –7.5 V) for the drivers, and VCC (+4.5 V to +5.5 V) for the receivers. These rails are independent - VCC may be derived from a local 5 V regulator while VDD/VSS come from an RS-232 charge-pump or dual DC-DC converter. Decoupling capacitors must be placed near each supply pin.

Does the AZ75232GTR-G1 support automatic power-down or shutdown mode?

No, the AZ75232GTR-G1 does not include a shutdown or power-down control pin. It operates continuously when powered. Power management must be implemented externally - for example, by gating VDD/VSS with a MOSFET controlled by a system enable signal. The device draws ~15 mA from VDD and ~30 mA from VCC under typical active conditions.

Can the AZ75232GTR-G1 drive standard 15-pin DB25 connectors?

Yes - although optimized for 9-pin DB9, the AZ75232GTR-G1's 3 drivers and 5 receivers cover all mandatory RS-232 signals (TX, RX, RTS, CTS, DTR, DSR, DCD, RI, SG). Unused DB25 pins (e.g., TXD, RXD, RTS, CTS, DTR, DSR, DCD, RI, GND) map directly; remaining pins (e.g., secondary channel, signal quality detector) would remain unconnected or handled by additional ICs.

Is the TSSOP-20 package of AZ75232GTR-G1 compatible with standard reflow profiles?

Yes - the AZ75232GTR-G1 in TSSOP-20 uses standard Pb-free (RoHS) and green (halogen-free) construction, qualified for JEDEC J-STD-020D reflow profiles. Peak temperature is rated to 260°C for 10 seconds. Recommended profile includes ramp rate ≤3°C/s, preheat 150–200°C for 60–120 s, soak 200–220°C for 60–120 s, and reflow peak 235–245°C for 30–60 s.