USB-6501 779205-01 USB Digital I/O Device/Data Acquisition Card

NI USB-6501 (24-Channel, 8.5 mA) Low-Cost USB Digital I/O Device 24 digital I/O lines; 1 x 32-bit counter Overvoltage protection, 8.5 mA current drive Built-in screw terminals or universal 34-pin connector (OEM version) USB 2.0 Full-Speed (12 Mb/s) bus interface Convenient bus-powered operation ## Specifications Summary ### General - Product Family: Digital I/O - Measurement Type: Digital - Form Factor: USB - Operating System / Target: Linux, Mac OS, Pocket PC, Windows - RoHS Compliant: Yes - Isolation Type: None ### Analog Input - Single-Ended Channels: 0 - Differential Channels: 0 ### Analog Output - Number of Channels: 0 ### Digital I/O - Bidirectional Channels: 24 - Input-Only Channels: 0 - Output-Only Channels: 0 - Timing: Software-timed - Logic Levels: TTL - Programmable Input Filters: No - Supports Programmable Power-Up States: No #### Digital Input - Input Type: Sinking, Sourcing - Maximum Voltage Range: 0 V - 5 V #### Digital Output - Output Type: Sinking, Sourcing - Single Channel Current Drive: 8.5 mA - Total Current Drive: 65 mA - Maximum Voltage Range: 0 V - 5 V ### Counters / Timers - Watchdog Timer: No - Counters: 1 - Number of DMA Channels: 0 - Buffered Operations: No - Debouncing / Glitch Removal: No - Max Source Frequency: 5 MHz - Pulse Generation: No - Counter Size: 32 bits - Timebase Stability: 50 ppm - Logic Levels: TTL ### Physical Specifications - Length: 8.51 cm - Width: 8.18 cm - Height: 2.31 cm - I/O Connector: Screw terminals - Power Supply: USB bus-powered