MM74C914

MM74C914 Hex Schmitt Trigger with Extended Input Voltage

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MM74C914 Hex Schmitt Trigger with Extended Input Voltage

October 1987 Revised January 1999

MM74C914 Hex Schmitt Trigger with Extended Input Voltage
General Description
The 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 -25V to GND 25V), and is valuable for applications involving voltage level shifting or mismatched power supplies. The positive and negative-going threshold voltages, VT and VT-, show low variation with respect to temperature (typ 0.0005V/ C at VCC 10V). And the hysteresis, VT - VT- 0.2 VCC is guaranteed.

Features
s Hysteresis: s Special Range 0.45 VCC (typ.) 0.2 VCCguaranteed protection: Extended Input Voltage input

s Wide supply voltage range: 3V to 15V s High noise immunity: 0.7 VCC (typ.) s Low power TTL compatibility: Fan out of 2 driving 74L

Ordering Code:
Order Number MM74C914M MM74C914N Package Number M14A N14A Package Description 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150" Narrow 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide

Device also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering code.

Connection Diagrams
Pin Assignments for DIP Special Input Protection

Top View

8V 25V for the diodes.

1999 Fairchild Semiconductor Corporation

DS005917.prf

www.fairchildsemi.com