Fairchild 3814

3814 pinout (click to enlarge)

The Fairchild 3814  (P/N 156-0306-00) is a 4½ digit dual-slope DVM controller monolithic integrated circuit fabricated in PMOS technology with TTL compatible I/O. It has multiplexed BCD outputs, with a multiplexer clock independent of the A/D clock, supplied externally.

Used in

• 7A13 (1976+ version U635)
• 7L13 (U2015)
• 7L18
• DM501 (non-A only, U330)

Some instruments using part Fairchild 3814

Instrument	Manufacturer	Class	Model	Description	Introduced
7A13	Tektronix	Plug-in	7A13	100 MHz Differential Comparator	1969
7L13	Tektronix	Plug-in	7L13	1.8/2.5 GHz Spectrum Analyzer	1974
7L18	Tektronix	Plug-in	7L18	18 (60) GHz Spectrum Analyzer	1978
DM501	Tektronix	Plug-in	DM501	4½ digit multimeter	1972

Documents

• Fairchild 3814 data sheet

block diagram (click to enlarge)