Texas Instruments AM26LV32EIRGYR

Overview

AM26LV32EIRGYR from Texas Instruments is a low-voltage, high-speed quadruple differential line receiver compliant with TIA/EIA-422-B and ITU V.11 standards. It operates from a single 3.3-V supply, delivers up to 32-MHz switching rates, features ±15-kV IEC ESD protection on bus pins, and provides open-circuit fail-safe outputs. It is used in industrial RS-422 communication links requiring robust noise immunity over long cables.

For engineers reviewing the AM26LV32EIRGYR datasheet, AM26LV32EIRGYR pinout, AM26LV32EIRGYR application, or AM26LV32EIRGYR equivalent, key selection criteria include its ±7-V common-mode input range, ±200-mV differential sensitivity, 3-state output control via dual enable inputs (G and G), Ioff support for partial-power-down mode, and VQFN-16 package compatibility with space-constrained PCB layouts.

Technical Context

The AM26LV32EIRGYR implements four independent RS-422 receivers with complementary active-high and active-low enable logic (G and G), enabling flexible bus arbitration and output state control. Each receiver channel features internal fail-safe biasing that forces a high output during open-circuit conditions, eliminating indeterminate states.

Its differential input stage supports ±7-V common-mode voltage while maintaining ±200-mV detection threshold and 35-mV hysteresis-ensuring reliable signal recovery under noisy industrial environments. The device uses a 3.3-V supply but accepts 5-V-tolerant enable inputs, simplifying interface with mixed-voltage systems.

Key Specifications

Pinout & Package

VQFN-16 (RGY) package: 4 mm × 3.5 mm, 0.5-mm pitch, thermally enhanced with exposed thermal pad. Designed for automated assembly and high-density routing.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar differential line receiver applications.

Compared with SN65LVDS32DR and THVD1550DR, the AM26LV32EIRGYR uniquely combines RS-422 compliance, open-circuit fail-safe, dual enable logic, and VQFN packaging-making it optimal for unidirectional, high-noise-margin, space-constrained receiver-only nodes in industrial automation.

Availability

AM26LV32EIRGYR is available at Aetrix Electronics and suitable for industrial motor drives, smart grid metering, ATM cash handling systems, and automotive test bench instrumentation requiring stable component supply and long-term manufacturability.

Supply support for AM26LV32EIRGYR 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

Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and connectivity technologies with over 90 years of innovation in industrial, automotive, and communications markets.

The AM26LV32EIRGYR belongs to TI's precision interface portfolio, engineered specifically for robust, low-voltage RS-422 receiver applications in harsh electromagnetic environments such as factory floors and utility substations.

FAQ

What is the operating temperature range for the AM26LV32EIRGYR?

The AM26LV32EIRGYR is rated for operation from –40°C to +85°C ambient temperature. This industrial-grade range ensures reliable performance in demanding environments including motor control cabinets, outdoor smart grid installations, and automotive manufacturing test equipment. All electrical specifications-including propagation delay, input thresholds, and ESD robustness-are guaranteed across this full range.

Does the AM26LV32EIRGYR support fail-safe operation on all four channels simultaneously?

Yes, the AM26LV32EIRGYR implements open-circuit fail-safe behavior on all four receiver channels. When any differential input pair (e.g., 1A/1B) is left floating-due to cable disconnection or bus idle-the corresponding output (1Y) is actively driven high. This behavior is inherent to the internal bias network and requires no external components or configuration.

Can the AM26LV32EIRGYR be used with a 5-V microcontroller's GPIO for enable control?

Yes, the AM26LV32EIRGYR's G and G enable inputs are 5-V tolerant, accepting logic-high voltages up to 5.5 V while operating from a 3.3-V VCC supply. This eliminates the need for level-shifters when interfacing with legacy 5-V MCUs or CPLDs, simplifying design and reducing bill-of-materials cost in mixed-voltage systems.

What is the significance of the RGY suffix in AM26LV32EIRGYR?

The RGY suffix identifies the VQFN-16 package variant of the AM26LV32EIRGYR: 4 mm × 3.5 mm body, 0.5-mm lead pitch, and an exposed thermal pad. This RoHS-compliant, lead-free package offers superior thermal performance and board-area efficiency compared to SOIC or TSSOP alternatives-ideal for compact industrial controllers and portable test equipment.

How does the Ioff feature function in the AM26LV32EIRGYR during partial power-down?

When VCC is removed or dropped to 0 V, the Ioff circuitry in the AM26LV32EIRGYR disables all outputs and isolates the A/B input pins, limiting leakage current to ±100 μA. This prevents damaging back-current flow from live bus lines into a powered-down system-enabling safe hot-swap, modular power sequencing, and energy-efficient standby modes in complex embedded platforms.