| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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40,000 pcs
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40000 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
|
1 pcs
|
1 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The MM74C922N from On Semiconductor is a CMOS key encoder that provides comprehensive logic for encoding SPST switch arrays. It supports keyboard scanning via an external clock or capacitor and includes on-chip pull-up devices for switches up to 50 kΩ on resistance, eliminating the need for ghost switch diodes.
This encoder features an internal debounce circuit, requiring only a single external capacitor, which can be bypassed if needed. A Data Available output signals valid keyboard entries, returning low when a key is released. It supports two-key roll-over and retains the last key pressed in an internal register. The 3-STATE outputs are LPTTL compatible, facilitating bus operation and system expansion.
With a wide supply voltage range of 3V to 15V and an operating temperature range of -40°C to 85°C, the MM74C922N is suitable for various applications. It is available in an 18-DIP package, designed for through-hole mounting.
| Qty | Low | High |
|---|---|---|
| 1+ | $1.27 | $1.27 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The supply voltage range is 3V to 15V.
The package is 18-DIP (0.300", 7.62mm) through hole.
The operating temperature range is -40°C to 85°C.
The output type is 3-STATE, LPTTL compatible.
Yes, it has keybounce elimination with a single capacitor.
The encoder circuit is 1 x 8:4.