Document
MM54C914 MM74C914 Hex Schmitt Trigger with Extended Input Voltage
February 1988
MM54C914 MM74C914 Hex Schmitt Trigger with Extended Input Voltage
General Description
The MM54C914 MM74C914 is a monolithic CMOS Hex Schmitt trigger with special input protection scheme This scheme allows the input voltage levels to exceed VCC or ground by at least 10V (VCC b 25V to GND a 25V) and is valuable for applications involving voltage level shifting or mismatched power supplies
The positive and negative-going threshold voltages VTa and VTb show low variation with respect to temperature (typ 0 0005V C at VCC e 10V) And the hysteresis VTa b VTb t 0 2 VCC is guaranteed
Features
Y Hysteresis
Y Special input protection
Y Wide supply voltage range Y High noise immunity Y Low power TTL
compatibility
Connection Diagram
Dual-In-Line Package
0 45 VCC (typ ) 0 2 VCC guaranteed
Extended Input Voltage Range
3V to 15V
0 7 VCC (typ ) Fan out of 2 driving 74L
Order Number MM54C914 or MM74C914
Top View
TL .