Supplier for M54826P in USA: Specifications, Features, Applications, and Sourcing Guide

 Finding a reliable supplier for M54826P in USA can be challenging because this is a specialized legacy Mitsubishi integrated circuit rather than a commonly stocked modern display or counter IC. The M54826P was designed as a frequency-counter and five-digit LED-driver device for radio-receiver applications. Today, it is particularly relevant to engineers, repair technicians, collectors, and restoration specialists maintaining vintage communications and consumer electronics.

The part is closely associated with classic receiver frequency-display circuits, making it an interesting example of how earlier integrated circuits combined counting, display-driving, and receiver-specific functions into a single device.

 

What Is M54826P?

The M54826P is a Mitsubishi bipolar digital IC based on I²L technology and designed as a frequency counter with a five-digit LED driver. Historical Mitsubishi documentation places the M5482x family within its frequency-counter product group. The M54826P specifically integrates a counter and circuitry for driving a five-digit LED frequency display.

Available component references identify the M54826P as a 24-pin DIP device manufactured by Mitsubishi. A specialist semiconductor listing gives a nominal 5 V supply, a maximum operating frequency of approximately 3.5 MHz, I²L technology, preset capability, and an operating temperature range of approximately -10°C to +60°C.

These specifications should be treated as historical reference information because the M54826P is a legacy component. When replacing an original device, engineers should confirm the exact package, marking, pinout, electrical limits, and circuit configuration against the original service documentation.

Key Features of M54826P

The main attraction of M54826P is its integration of several functions required for a vintage digital frequency display.

Its major characteristics include a five-digit LED display driver, frequency-counting functionality, preset/count-mode control, and compatibility with the surrounding logic used in radio receiver frequency-display systems. Historical documentation and service literature show dedicated count-mode and preset-selection inputs as well as segment-driver outputs.

The 24-pin DIP package is also significant for repair work. Through-hole DIP construction was common in older radio receivers and makes the device relatively straightforward to replace physically compared with many modern surface-mount components. However, age-related factors such as oxidation, previous soldering, counterfeit markings, and storage conditions should still be considered when sourcing replacement inventory.

The device's historical 5 V operation and I²L architecture also distinguish it from modern microcontroller-based frequency counters. A modern MCU may be able to reproduce the general function, but replacing M54826P with a microcontroller is not necessarily practical when restoring an original circuit board because the original PCB layout, display interface, preset logic, and frequency-offset circuitry may depend on the specific behavior of the Mitsubishi IC.

M54826P in Vintage Radio Receivers

One of the clearest documented applications of M54826P is the Realistic DX-300 shortwave receiver. The DX-300 service documentation identifies M54826P as IC501, with the function listed as “Freq. Counter” and the manufacturer part number specified as M54826P.

Service documentation for the related Realistic DX-300/DX-302 receiver family provides additional evidence of the specialized role of the IC. The frequency-counter section combines the M54826P with other logic and frequency-processing components to convert receiver oscillator information into the displayed tuning frequency.

This makes the M54826P particularly valuable for vintage-radio restoration. If the original counter IC fails, simply replacing surrounding logic may not restore the display. A missing or defective M54826P can prevent the receiver from correctly displaying the tuned frequency even when the RF and audio sections continue to operate.

For collectors restoring classic shortwave receivers, maintaining the original frequency-display architecture can also be important for preserving historical authenticity. A modern replacement board may provide the same basic function, but an original M54826P allows the original electronics and user interface to remain intact.

Related Mitsubishi Models and Their Applications

Several related Mitsubishi devices provide useful context when evaluating M54826P or repairing similar vintage equipment.

M54820P

The M54820P is another five-digit LED frequency-counter device from the Mitsubishi M5482 family. Historical Mitsubishi documentation describes it as a radio-receiver frequency counter with a five-digit LED driver. Its documented counting range is substantially broader than the M54821P, with receiver-specific correction values and dynamic common-anode LED drive.

The M54820P is therefore particularly relevant to vintage AM/FM and communications receivers that require a five-digit digital frequency display. Its application is not limited to simple frequency counting: the correction or offset functions were intended to account for the relationship between the receiver's internal oscillator frequency and the actual displayed station frequency.

For restoration engineers, this type of IC is useful when repairing receivers whose display circuitry relies on analog tuning information combined with digital frequency processing.

M54821P

The M54821P is another Mitsubishi I²L frequency counter with a five-digit LED driver. Historical documentation lists it specifically as a radio-receiver frequency counter with five-digit LED driver, with an AM-mode counting range and selectable correction values.

This model is particularly interesting for AM receiver restoration. AM receivers often use a local oscillator whose frequency differs from the actual received frequency by the intermediate-frequency value. The correction functions in these older frequency-counter ICs were designed around this receiver architecture.

Consequently, an M54821P-based design can be found in equipment where accurate digital frequency indication is needed without requiring a modern programmable processor.

M54822P

The M54822P takes a different display approach. Mitsubishi documentation identifies it as a radio-receiver frequency counter with a four-digit fluorescent display driver. It uses the same general I²L-era design philosophy but targets fluorescent display hardware rather than a five-digit LED arrangement.

This makes M54822P relevant to vintage receivers and electronic equipment where VFD-style displays were preferred. Its four-digit format can be appropriate for equipment with a less demanding display resolution or a different physical front-panel design.

For restoration projects, this distinction is important because the display technology, digit count, drive method, and pin configuration are all part of the system design. M54822P should therefore not be treated as a direct substitute for M54826P simply because both belong to the same general frequency-counter family.

M54823P

The M54823P is another four-digit receiver frequency-counter IC, but it provides an LED driver rather than the fluorescent-display driver associated with M54822P. Historical Mitsubishi documentation identifies M54823P as a radio-receiver frequency counter with a four-digit LED driver.

Its applications are especially relevant to older AM/FM radio equipment. A four-digit LED display can provide useful frequency information while requiring less display hardware than a five-digit design. The device is therefore valuable when repairing vintage receiver front panels where the original LED display must be preserved.

M54827P

The M54827P is another five-digit LED-driver frequency-counter device in the same broader Mitsubishi family. Historical references identify it as a frequency counter with a five-digit LED driver and associate it with radio-receiver frequency-display applications.

Its existence demonstrates the range of specialized receiver-display ICs Mitsubishi produced during this period. Engineers should compare the detailed pinout and correction functions before considering it as an alternative to M54826P.

Applications Beyond Radio Restoration

Although radio receivers are the most strongly documented application area, the functional architecture of M54826P can also be relevant to other legacy frequency-display systems.

Vintage frequency counters, signal-monitoring equipment, laboratory instruments, test fixtures, and custom communications equipment may use similar counter-and-display architectures. In these systems, the IC can form part of a chain containing a prescaler, divider, oscillator, or signal-conditioning circuit.

For example, a higher-frequency RF signal might first be divided by a separate prescaler before being supplied to the frequency-counter stage. Historical Mitsubishi documentation lists other frequency-divider and prescaler ICs alongside the M5482 family, illustrating how these devices could form a complete signal-counting architecture.

This is useful when restoring equipment because a failed frequency display may not necessarily mean that the counter IC itself is defective. The external prescaler, oscillator, divider, display LEDs, power supply, or control inputs should also be checked.

Why M54826P Is Difficult to Source

M54826P is a specialized legacy component, so availability can be considerably more limited than for modern 74-series logic, microcontrollers, or display-driver ICs. Historical documents are available, but current manufacturer support and mainstream production availability are limited.

A specialist listing identifies the part as a Mitsubishi DIP24 device and provides current specialist inventory information, illustrating that remaining-stock sourcing is still possible even for this type of legacy IC.

When sourcing M54826P, buyers should pay particular attention to the complete marking, manufacturer identity, package type, pin count, date code, and physical condition. These checks are especially important for restoration projects where an incorrect frequency-counter IC can result in misleading frequency readings or a nonfunctional display.

Buy M54826P from Utsource

For customers looking for a supplier for M54826P in USA, Utsource currently has a dedicated M54826P product listing and provides an inquiry/order route for the part. You can search for the exact M54826P part number on Utsource, review the available sourcing information, and place an order when the listed inventory meets your requirements. For an obsolete component like this, confirming the complete part number and package before ordering is recommended.

Conclusion

M54826P is a specialized Mitsubishi legacy IC designed for frequency counting and five-digit LED display driving, with particularly strong historical relevance to radio receivers. Its documented use in the Realistic DX-300 receiver demonstrates how it was integrated into real-world shortwave-radio frequency-display systems.

Related models such as M54820P, M54821P, M54822P, M54823P, and M54827P show how Mitsubishi developed different frequency-counter and display-driver configurations for AM receivers, FM receivers, LED displays, fluorescent displays, and different digit counts. These devices can be highly valuable in vintage-radio restoration and legacy-equipment maintenance, but their differences in display type, correction functions, pinout, and operating characteristics mean that substitution should always be verified carefully.

For engineers, repair technicians, collectors, and vintage-electronics enthusiasts who need an authentic replacement, searching for M54826P from a specialist supplier in the USA can be a practical way to keep original frequency-display hardware operating without redesigning the entire receiver.

M54826P https://www.utsource.net/itm/p/12444324.html