LED DRVR 28Segment 5V 28-Pin PDIP

The ICM7217 family of 4 digit pre settable up/down counters contain a 4 digit, 7 segment LED display driver and a pre settable comparison (predetermining) register. The counter and comparison register can be preset using either thumbwheel switches. jumpers, or external digital logic. The ICM7217 (common anode) and ICM7217A (common cathode) are decade counters with a um count of 9999. The ICM7217B (common anode) and ICM7217C (common cathode) are modulo 60 counters intended for hours/minutes or minute/seconds timing applications, and have a um count of 5959. These devices also provide multiplexed BCD outputs, a Carry/Borrow output allowing ICM7217s to be cascaded, a Zero output which indicates when the count is equal to zero, and an Equal output which indicates when the count is equal to the value contained in the comparison register. The ICM7217 also has a Reset input and a display latch with store input.

• Pin for Pin Second Source
• 4 Digit Up/Down Counter
• Directly Drives LED Display
• Pre settable 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