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.
