Astronics / EADS / Racal 1260-14C 96-Line Digital I/O, Open Collector Module

The Astronics/EADS/Racal 1260-14C is a C-size, single-slot VXIbus Digital I/O module delivering 96 individually configurable open collector channels organized into twelve 8-bit groups. Each group supports independent pull-up supplies up to 32 VDC, enabling flexible interfacing with external logic, switches, and relays. Channels sink up to 200 mA and drive up to 32 V, with pseudo tri-state capability achieved by driving logic '1'. The module operates in asynchronous, synchronous, and mixed modes with programmable two-wire handshake support (active high or low). Data rates span 1 kHz to 200 kHz asynchronous (register-based) and up to 800 Hz synchronous. Message-based control leverages the VXIbus backplane via 8-bit poke/peek operations, supporting hex, decimal, and binary data manipulation. Internal pull-up resistors are user-installed via 16-pin DIP sockets; external voltage (Vext) supplies up to 32 VDC per group at 1 A maximum per pin enable inductive fly-back protection. The module ships with one mating connector set; additional connectors are available separately. CE Mark compliance confirms adherence to RF emissions, electromagnetic immunity, and electrical safety standards. ## Technical Specifications • Channels: 96 Digital I/O (twelve 8-bit groups) • Output Type: Open Collector • Current: Sinks up to 200 mA per channel • Voltage: Drives up to 32 V; pull-up supplies to 32 VDC per group; external Vext limited to 1 A per pin • Data Rate: 1 kHz; static to 200 kHz (asynchronous, register-based); static to 800 Hz (synchronous) • Operating Modes: Asynchronous, Synchronous, Mixed; two-wire programmable handshake (active high/low) • Control Interface: Message-based via VXIbus; 8-bit poke/peek operations • Data Formats: Hexadecimal, Decimal, Binary • Pull-Up Configuration: Internal (user-installed via 16-pin DIP sockets) or external supply; 10 kΩ recommended for standard logic gates • Physical Form Factor: C-size, single-slot VXIbus module ## Key Features • Individual channel input/output configuration • Pseudo tri-state output capability • Programmable handshake lines for synchronous transactions • Support for VXIbus supplied voltages (+5V, +12V, +24V) as internal pull-up sources • CE Mark compliance ## Typical Applications • Relay and switch control • External digital circuit interfacing • Industrial test and measurement systems • Synchronous multi-channel I/O sequencing ## Compatibility & Integration The 1260-14C integrates with VXIbus backplanes and supports optional 1260 Series Smart Card Modules for buffered I/O operations. One mating connector is included; additional connectors may be ordered separately.