It might help if you disclosed why you want to know. If you don't know whence it came, you're probably not looking to replace a dead part. I'd guess it is some form of oscillator. They're usually the same power pinout as a 7400 gate. Power and ground in opposite corners. Third corner is output. Fourth corner is sometimes an inhibit/enable pin. I'd start at 3.3V and measure the frequency. If it ain't runnin' try 5V. Stability specs are something else again. If it came from a PS3 remote controller, stability doesn't have to be very good.
It's possible that it's just a crystal or other resonator If you have continuity between any two adjacent pins, it's more likely a resonator. But the reverse is not necessarily true.
Could be "Canadian Marconi". Not sure whether they are still in the crystal oscillator business but you could ask:
-- Regards, Joerg http://www.analogconsultants.com/
Thanks for the links, but I don't think the logo matches the CMC one. regards, JB
One of my engineers asked me if could ID the part. He buys/repairs/rebuilds various electronic gadgets.
I think that's exactly what he wants to do.
I'll pass on your advice. Many thanks.
JB
JB wrote:
A bit long, but a visual match found in the US trademark database.
Word Mark CM Goods and Services IC 009. US 021 023 026 036 038. G & S: Electronic notice boards; electric buzzers; fire alarms; oscillators; radar apparatus; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; blank magnetic data carriers, blank recordable optic discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus; acoustic diaphragms; silicon wafers; capacitors; ceramic capacitors; monolithic ceramic capacitors; laminated ceramic capacitors; semiconductive ceramic capacitors; high voltage capacitors; high frequency power capacitors; high frequency microchip capacitors; trimmer capacitors; capacitance network, comprising two or more capacitors for use as a filter for noise suppression; electric resistors; trimmer potentiometers; high voltage resistors; network resistors; thermistors; positive temperature resistance coefficient thermistors; negative temperature resistance coefficient thermistors; electromagnetic interference suppression filters; ferrite beads inductors; ferrite magnet cores; common mode choke coils, electric; varistors; microwave absorbing sheets for noise suppression as parts of telecommunication equipment, computers and its peripheral devices, audio/visual equipment, television sets, digital still cameras and digital camcorders; resistance capacitance modules and capacitance modules, namely, capacitors and resistors; electric coils; electric chip coils, electric; piezoelectric transformers; resonators; ceramic resonators; surface acoustic wave resonators; BGS wave resonators; piezoelectric sound alarm devices; piezoelectric sound components, namely, piezoelectric diaphragms; piezoelectric buzzers; piezoelectric sounders; piezoelectric receivers; piezoelectric speakers; piezoelectric ringers for use with telephones; filters for audiovisual equipment and communication equipment, namely, ceramic filters, ceramic discriminators, ceramic trap circuits; BGS wave traps; surface acoustic wave filters; BGS wave filters; boundary electric wave filters. microwave filters; inductance and capacitance filters; duplexers; diplexers; microwave components and modules, namely, coaxial connectors, radio frequency diode switches, voltage control oscillators, temperature compensated crystal oscillators, Bluetooth modules for use in wireless radio transmission, WiFi modules for use in wireless radio transmission, one-segment broadcasting tuner modules; isolators; circulators; dielectric resonators; dielectric antennas; multilayer antennas; multilayer couplers for high-frequency signal processing; multilayer baluns; delay lines; chip delay lines; phase-locked loop modules; radio frequency sub modules for use in radio frequency transmission; active filters for use in radio frequency transmission; hybrid integrated circuits; radio frequency modules; wired modems; personal computer memory card modems; functional modules, namely, integrated circuit modules for use with infrared detectors; integrated circuit modules for office automation equipment; integrated circuit modules for video equipment; integrated circuit modules for communication equipment; parts for video equipment, namely, parts for video cameras, video players, video disc recorders, videotape recorders; radio signal tuners; flyback transformers; high voltage capacitance and resistance blocks; high voltage rectified blocks; high voltage stabilization circuit modules; focus adjusting electric resistors; electric power supply; high voltage power supply; high voltage transformers; switching power supply; converters; inverters; timing sensors; infrared sensors; magnetic pattern recognition sensors; shock sensors; electric potential sensors; temperature sensors; rotary position sensors; potentiometers; rotary sensors; airbag sensors; ultrasonic sensors; gyroscope sensors; MEMS micro electro mechanical systems gyroscope sensors; piezoelectric gyroscopes; lens electric actuators for camera modules; lens electric actuators for optical pickups; electric actuators for machines and apparatus for self-adjusting/regulating of fluid. electric actuators for use as parts of telecommunication machines and apparatus; electric actuators for use as parts of electronic machines and apparatus; integrated circuits; microwave monolithic integrated circuits; GaAs (gallium arsenide) field effect transistors; print circuit boards; dielectric boards for printed circuits; electrically insulated board for printed circuits; multilayer functional substrates, multilayer printed circuit boards, multilayer printed wiring boards, low temperature co-fired ceramic functions substrates (LTCC), high temperature co-fired ceramic functional substrates (HTCC); audio speaker systems comprised primarily of audio speakers; spherical audio speaker systems comprised primarily of audio speakers; audio tweeters; spherical audio tweeters; antenna coils; AC line filters; triplexers with integrated surface acoustic wave filters; AC-DC converter modules; fresnel lenses; tire pressure monitoring systems, namely, electronic tire pressure monitors; composite dielectric antennas; transparent ceramics for use as magnifying lenses; transparent ceramics for use as optical lenses, prisms and optical pickup heads; conductive electrode pastes and resins containing conductive metal Mark Drawing Code (5) WORDS, LETTERS, AND/OR NUMBERS IN STYLIZED FORM Trademark Search Facility Classification Code LETS-2 CM Two letters or combinations of multiples of two letters SHAPES-CIRCLE Circle figures or designs including semi-circles and incomplete circles Serial Number 79059447
It's Murata, and a crystal alone, but IDing it in a shrinking product line will be a chore.
You should be able to figure out what is needed by circuit function.
RL
Many thanks for your help.
JB
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