MM54C923J-MIL National Semiconductor, MM54C923J-MIL Datasheet - Page 5

• Manufacturer Part Number: MM54C923J-MIL
• Manufacturer: National Semiconductor

Specifications of MM54C923J-MIL

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Typical Performance Characteristics
Typical Applications
Note 3 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
Any Y Input
Typical F
rp
SCAN
vs V
vs C
IN
at
OSC
TL F 6037 – 10
TL F 6037 – 6
TL F 6037 – 8
5
Synchronous Data Entry Onto Bus (MM74C922)
Outputs are enabled when valid entry is made and
go into TRI-STATE when key is released
Typical R
Any X Output
Typical Debounce Period
vs C
KBM
on
vs V
OUT
at
TL F 6037 – 11
TL F 6037 – 7
TL F 6037 – 9