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7442

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Technical/Catalog Information74423-050LF
VendorFCI
CategoryConnectors
Card TypePCMCIA
Card Entry DirectionUp
Connector TypeHeader, Ejector Assembly
Ejector Side-
Ejector TypePush, Pull
Features-
Height Above Board0.425" (10.80mm)
Mounting TypeSurface Mount, Right Angle, Screw Mount
Stacking TypeSingle
PackagingTray
Lead Free StatusLead Free
RoHS StatusRoHS Compliant
Other Names 74423 050LF
74423050LF

Product Manufacturers Pack D/C
7442 - - -

Pinout/Connection Diagram

7442 Circuit
Converts BCD input from digital test gear to sequence of 10 different tones representing 0 to 9, for recognition of reading on digital display by blind radio operator or experimenter. Length of tone sequence equals number of digits displayed, plus sign indicator or half-digit if desired. Circuit shown is for 31/2 digits. Article describes operation of drcuit and gives construction details. Resistors R0-R9 (values inkilohms from 6.8K to 470K),determining frequencies of generated tones,are switched into VCO IC10 by IC9-D,R Pacholok,Digital to Audio Decoder,73 Magazine,Oct 1977,p 178-180.

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PDF / Datasheet

7442 PDF Download

7442

File Size: 42378 KB
Manufacturer: FAIRCHILD [Fairchild Semiconductor]

Related PDF

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Manufacturer:ETC [ETC]
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Manufacturer:PHILIPS [Philips Semiconductors]

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