Home  Logic - Signal Switches, Multiplexers, Decoders  MM74C923N Datasheets | Logic - Signal Switches, Multiplexers, Decoders IC ENCODER 20-KEY 20-DIP

MM74C923N Datasheets | Logic - Signal Switches, Multiplexers, Decoders IC ENCODER 20-KEY 20-DIP

By apogeeweb, MM74C923N, MM74C923N Datasheet,MM74C923N PDF,ON Semiconductor

Product Overview

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MM74C923N
Manufacturer Part#: MM74C923N
Product Category: Logic - Signal Switches, Multiplexers, Decoders
Stock: On Order
Manufacturer: ON Semiconductor
Description: IC ENCODER 20-KEY 20-DIP
Datasheet: MM74C922,923WM
Package: 20-DIP (0.300", 7.62mm)
Minimum: 1
Quantity: On Order

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Product Attributes

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Manufacturer: ON Semiconductor
Series: 74C
Packaging: Tube
Part Status: Obsolete
Type: 20-Key Encoder
Circuit: 1 x 9
Independent Circuits: 1
Current - Output High Low: 15mA 16mA
Voltage Supply Source: Single Supply
Voltage - Supply: 3V ~ 15V
Operating Temperature: -40°C ~ 85°C
Mounting Type: Through Hole
Package / Case: 20-DIP (0.300" 7.62mm)
Supplier Device Package: 20-PDIP
Base Part Number: MM74C92
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Alternative Models

Part Compare Manufacturers Category Description
Mfr.Part#:MM74C923N Compare: Current Part Manufacturers:Fairchild Category:Logic ICs Description: Encoder 1-to-5 key cmos 20pin pdip w rail
Mfr.Part#:SNJ54S85W Compare: MM74C923N VS SNJ54S85W Manufacturers:N/A Category:Logic ICs Description: Magnitude comparator 4bit 16pin cfpak tube
Mfr.Part#:MM54C923J-MIL Compare: MM74C923N VS MM54C923J-MIL Manufacturers:N/A Category: Description: 20-key encoder
Mfr.Part#:MM74C922N Compare: MM74C923N VS MM74C922N Manufacturers:N/A Category: Description: Encoder 1-to-4 key cmos 18pin pdip rail

Descriptions

Encoder 1-to-5 Key CMOS 20-Pin PDIP Rail:Verical
IC, 74C CMOS, 74C923, DIP20, 15V; Applications:Keyboard, Switches; Logic Type:Encoder; No. of Outputs:6; Supply Voltage Range:3V to 15V; Logic Case Style:DIP; No. of Pins:20; Operating Temperature Range:-40°C to +85°C; SVHC:No SVHC (20-Jun-2011); Base Number:74; IC Generic Number:74C923; Logic Function Number:923; Logic IC Base Number:74923; Logic IC Family:C; Logic IC Function:20-Key Keyboard Encoder; On Resistance Rds(on):200ohm; Operating Temperature Max:85°C; Operating Temperature Min:-40°C; Output Current Max:15mA; Package / Case:DIP; Supply Voltage:15V; Supply Voltage Max:15V; Supply Voltage Min:3V; Termination Type:Through Hole:element14 APAC
The MM74C922 and MM74C923 CMOS key encoders provide all the necessary logic to fully encode an array of SPST switches. The keyboard scan can be implemented by either an external clock or external capacitor. These encoders also have on-chip pull-up devices which permit switches with up to 50 kohm on resistance to be used. No diodes in the switch array are needed to eliminate ghost switches. The internal debounce circuit needs only a single external capacitor and can be defeated by omitting the capacitor. A Data Available output goes to a high level when a valid keyboard entry has been made. The Data Available output returns to a low level when the entered key is released, even if another key is depressed. The Data Available will return high to indicate acceptance of the new key after a normal debounce period; this two-key roll-over is provided between any two switches. An internal register remembers the last key pressed even after the key is released Product Highlights: 50 kohm maximum switch on resistance On or off chip clock On-chip row pull-up devices 2 key roll-over Keybounce elimination with single capacitor Last key register at outputs 3-STATE output LPTTL compatible Wide supply range: 3V to 15V Low power consumption:North Star Micro

  • Features
  • Product Manufacturer

FEATURES

General Description

The MM74C922 and MM74C923 CMOS key encoders provide all the necessary logic to fully encode an array of SPST switches. The keyboard scan can be implemented by either an external clock or external capacitor. These encoders also have on-chip pull-up devices which permit switches with up to 50 kΩon resistance to be used.

Features

■ 50 kΩmaximum switch on resistance
■ On or off chip clock
■ On-chip row pull-up devices
■ 2 key roll-over
■ Keybounce elimination with single capacitor
■ Last key register at outputs
■ 3-STATE output LPTTL compatible
■ Wide supply range: 3V to 15V
■ Low power consumption

ON Semiconductor (Nasdaq: ON) is driving energy efficient innovations, empowering customers to reduce global energy use. The company offers a comprehensive portfolio of energy efficient power and signal management, logic, discrete and custom solutions to help design engineers solve their unique design challenges in automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace and power supply applications. ON Semiconductor operates a responsive, reliable, world-class supply chain and quality program, and a network of manufacturing facilities, sales offices and design centers in key markets throughout North America, Europe, and the Asia Pacific regions.

  • Environmental & Export Classifications
  • Documents & Media
Description Value
Description Value
Moisture Sensitivity Level (MSL): 1 (Unlimited)
Documents Media
Datasheets: MM74C922,923WM
HTML Datasheet: MM74C922,923WM

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