MM74C922NX_NL Fairchild Semiconductor, MM74C922NX_NL Datasheet - Page 7

• Manufacturer Part Number: MM74C922NX_NL
• Manufacturer: Fairchild Semiconductor

Specifications of MM74C922NX_NL

• Cascading Capability: No
• Logic Family: 74C
• Number Of Inputs: 1
• Number Of Outputs: 4
• Number Of Encoded Keys: 16
• Abs. Propagation Delay Time: 250ns
• Operating Supply Voltage (max): 15V
• Operating Supply Voltage (typ): 3.3/5/9/12V
• Operating Supply Voltage (min): 3V
• Lead Free Status / RoHS Status: Compliant

Typical Performance Characteristics
Typical Applications
The keyboard may be synchronously scanned by omitting the capacitor at
osc. and driving osc. directly if the system clock rate is lower than 10 kHz
Synchronous Handshake (MM74C922)
Typical I
Typical F
rp
vs V
SCAN
IN
at Any Y Input
vs C
OSC
7
Outputs are enabled when valid entry is made and go into 3-STATE when
key is released.
The keyboard may be synchronously scanned by omitting the capacitor at
osc. and driving osc. directly if the system clock rate is lower than 10 kHz
Synchronous Data Entry Onto Bus (MM74C922)
Typical R
Typical Debounce Period vs C
on
vs V
OUT
at Any X Output
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