MM74C922WMX_NL Fairchild Semiconductor, MM74C922WMX_NL Datasheet
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MM74C922WMX_NL
Specifications of MM74C922WMX_NL
Related parts for MM74C922WMX_NL
MM74C922WMX_NL Summary of contents
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... Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code. Connection Diagrams Pin Assignment for DIP Top View MM74C922 © 2001 Fairchild Semiconductor Corporation Features 50 k maximum switch on resistance On or off chip clock On-chip row pull-up devices ...
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Connection Diagrams (Continued) Truth Tables (Pins 0 through 11) Switch Position Y1, X1 Y1, X2 Y1, X3 Y1, X4 Y2 ...
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Block Diagram 3 www.fairchildsemi.com ...
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Absolute Maximum Ratings Voltage at Any Pin V 0. Operating Temperature Range MM74C922, MM74C923 Storage Temperature Range Power Dissipation ( Dual-In-Line Small Outline Operating V Range Lead Temperature (Soldering, 10 seconds) DC ...
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DC Electrical Characteristics Symbol Parameter V Logical “0” Output Voltage OUT(0) OUTPUT DRIVE (See Family Characteristics Data Sheet) (Short Circuit Current) I Output Source Current SOURCE (P-Channel) I Output Source Current SOURCE (P-Channel) I Output Sink Current SINK (N-Channel) I ...
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Switching Time Waveforms T1 T2 RC, T3 0.7 RC, where R 10k and C is external capacitor at KBM input. www.fairchildsemi.com FIGURE 1. FIGURE 2. 6 ...
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Typical Performance Characteristics Typical Any Y Input rp IN Typical SCAN OSC Typical Applications Synchronous Handshake (MM74C922) The keyboard may be synchronously scanned by omitting the capacitor at osc. and driving osc. directly ...
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Asynchronous Data Entry Onto Bus (MM74C922) Outputs are in 3-STATE until key is pressed, then data is placed on bus. When key is released, outputs return to 3-STATE. Expansion to 32 Key Encoder (MM74C922) Theory of Operation The MM74C922/MM74C923 Keyboard ...
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Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide Package Number M20B 9 www.fairchildsemi.com ...
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 18-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide www.fairchildsemi.com Package Number N18B 10 ...
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right ...