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● Type: 82C54-10 programmable interval counters

● Output Drive (TTL):

- 2.0 VDC min., source 32 mA

- 0.55 VDC max., sink 64 mA

● Maximum Input Frequency: 10MHz

● Input, Gate: CMOS compatible

● Clock: On-board, 10 MHz crystal-controlled clock

● Active Count Edge: Negative edge

● Minimum Clock Pulse Width: (input characteristic) 30 ns high, 40 ns low

● Minimum Divisor: divide-by-2

● Maximum Divisor: divide-by-65536 (16-bits, load value “0”)

● Timer Range: 16 bits-2

● USB2.0 high-speed (480 Mb/s)

● circa 4000 transactions per second

● Operating Temperature 0° to +70°C, optional -40° to +85°C

● Storage Temperature -40° to +85°C

● Humidity 5% to 95% , non-condensing

● Board Dimension: 3.550 x 3.775 inches

● Basic unit: 60mA typical (no load); 12mA with max counter transitions

● +5 VDC from the USB bus or external power supply depending on user configuration

The USB bus is specified to provide 500 mA to most desktop environments. This gives you 440 mA available (500mA -60mA = 440mA). If using more than a total of 500mA, use optional 9 VDC (on board voltage regulator outputs +5 VDC to card) external power supply and remove VUSB jumper and place jumper on VEXT. Then plug in external power before plugging into USB port . This option will give you a total of 1000mA available.

+5V resettable fuse at 0.5A located on connector

***This product is designed to be in full compliance with CE requirements.