Agilent/Keysight 34522B

The Agilent/Keysight 34522B is a 32-bit digital I/O module engineered for parallel data acquisition and control within the HP 3235 Mainframe ecosystem. It has 32 bidirectional TTL-compatible data lines organized into four independent 8-bit ports, each with dedicated handshake control. Ports operate flexibly as individual read/write channels or combine for 16-bit and 32-bit parallel transfers.

The module delivers read/write rates exceeding 40 kHz, supporting time-critical applications requiring deterministic data exchange.

Technical Specifications

• Data Lines: 32 bidirectional, TTL-compatible


• Port Architecture: Four 8-bit ports with independent handshake lines


• Configurable Data Transfer: 8-bit, 16-bit, or 32-bit parallel operation


• Interrupt Lines: 8 edge-triggered


• High-Power Outputs: 16 FET outputs


• Data Rate: Greater than 40 kHz read/write

Key Features

• Flexible port configuration enables independent or combined operation for mixed-width parallel transfers


• Edge-triggered interrupt architecture supports responsive event handling in control applications


• High-power FET outputs drive external loads without additional buffering


• TTL signal levels ensure compatibility with standard digital logic families


• Modular design integrates directly into mainframe-based test and measurement systems

Typical Applications

• Automated test equipment (ATE) requiring parallel digital control and monitoring


• Real-time data acquisition from multiple sensor and device interfaces


• Industrial process control with deterministic timing requirements


• Hardware-in-the-loop simulation platforms


• Multi-channel digital signal routing and switching

Compatibility & Integration The 34522B works with the HP 3235 Mainframe, providing seamless integration into modular measurement platforms.