ICM7217AIPI
Category: Clock/Timing - Programmable Timers and Oscillators
Description: 4 Digit LED Presettable Up/Down Counter
Price range ($)
1.78307 2.91366
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ICM7217AIPI
ICM7217AIPI has several brands around the world that may have alternate names for ICM7217AIPI due to regional differences or acquisition. ICM7217AIPI may also be known as the following names:
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Description
ICM7217AIPI
Stock:33927 |
Intel |
4 Digit LED Presettable Up/Down Counter |
≥1: £2.30074 £2.07067 ≥5: £2.18570 £1.96713 ≥10: £2.07067 £1.86360 ≥20: £2.01315 £1.81183 ≥50: £1.95563 £1.76007 ≥100: £1.89811 £1.70830 ≥200: £1.84059 £1.65653 ≥500: £1.81759 £1.63583 ≥1000: £1.78307 £1.60477
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Inquiry
|
ICM7217AIPI
Stock:23 |
Harris |
4 Digit LED Presettable Up/Down Counter |
≥1: £2.91366 £2.62230
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Inquiry
|
Features
● Four Decade, Presettable Up-Down Counter with Parallel Zero Detect
● Settable Register with Contents Continuously Compared to Counter
● Directly Drives Multiplexed 7 Segment Common Anode or Common Cathode LED Displays
● On-Board Multiplex Scan Oscillator
● Schmitt Trigger On Count Input
● TTL Compatible BCD I/O Port, Carry/Borrow, Equal, and Zero Outputs
● Display Blank Control for Lower Power Operation; Quiescent Power Dissipation<5mW
● AllTerminals Fully Protected Against Static Discharge
● Single 5V supply Operation
Description
The ICM7217 is a four digit, presettable up/down counter with an onboard presettable register continuously compared to the counter. The ICM7217 is intended for use in hard-wired applications where thumbwheel switches are used for loading data, and simple SPDT switches are used for chip control.
This circuit provides multiplexed 7 segment LED display outputs, with common anode or common cathode configurations available. Digit and segment drivers are provided to directly drive displays of up to 0.8 inch character height (common anode) at a 25% duty cycle. The frequency of the onboard multiplex oscillator may be controlled with a single capacitor,or the oscillator may be allowed to free run.Leading zeros can be blanked. The data appearing at the 7 segment and BCD outputs is latched;the content of the counter is transferred into the latches under external control by means of the Store pin.
The ICM7217 (common anode) and ICM7217A (common cathode) versions are decade counters,providing a maximum count of 9999, while the ICM7217B (common anode) and ICM7217C(common cathode) are intended for timing purposes, providing a maximum count of 5959.
This circuit provides 3 main outputs; a CARRY/BORROW output, which allows for direct cascading of counters, a ZERO output, which indicates when the count is zero, and an EQUAL output, which indicates when the count is equal to the value contained in the register. Data is multiplexed to and from the device by means of a three-state BCD l/O port. The CARRY/BORROW, EQUAL, ZERO outputs,and the BCD port will each drive one standard TTL load.
To permit operation in noisy environments and to prevent multiple triggering with slowly changing inputs,the count input is provided with a Schmitt trigger.
Input frequency is guaranteed to 2MHz, although the device will typically run with fIN as high as 5MHz. Counting and comparing (EQUAL output) will typically run 750kHz maximum.
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Express:(FEDEX, UPS, DHL, TNT)Free shipping on first 0.5kg for orders over £157.09,Overweight will be charged separately
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