General Description
The Maxim ICM7217, 7217 family of 4 digit presettable up/down counters contain a 4 digit, 7 segment LED display drvier and a presettalble comparison ( predetermining) register. The counter and comparison register can be preset using either thumbwheel switches, jumpers, or external digital logic. 

FEATUREs
♦ Pin for Pin Second Source!
♦ 4 Digit Up/Down Counter
♦ Directly Drives LED Display
♦ Presettable Counter and Compare Register
♦ Interfaces with Thumbwheel Switches or Digital Logic
♦ Can Be Cascaded
♦ Multiplexed BCD I/O
♦ Up/Down, Store and Reset Inputs
♦ Monolithic, Low Power CMOS Design