Fairchild 3814

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3814 pinout (click to enlarge)
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 (S/N B0200000 to B0249999, 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

block diagram (click to enlarge)