NJM2521D

Audio Special Purpose Overview

The NJM2521D is a 3-input to 1-output audio switch manufactured by Nisshinbo Micro Devices Inc. It utilizes bipolar technology and operates within a supply voltage range of +4.75V to +13V. The device features two bias-type inputs and one buffer-type output, with a typical input impedance of 58kΩ and crosstalk of -70dB. Designed for through-hole mounting, it is housed in an 8-DIP package (0.300 inch width). The component supports an operating temperature range of -20°C to +75°C and is intended for use in audio systems.

Audio Special Purpose Feature Summary

• 3-Input, 1-Output configuration with two bias-type inputs and one buffer-type output
• Operating voltage range from +4.75V to +13V
• Typical input impedance of 58kΩ and crosstalk of -70dB

Audio Special Purpose Applications

• Audio system signal routing

Audio Special Purpose Procurement Notes

Verify the current product status before procurement, as the component may be subject to discontinuation notices. Confirm that the 8-DIP package aligns with the target PCB footprint and manufacturing process requirements. Ensure the supply voltage provided to the circuit remains strictly within the +4.75V to +13V operational limits to prevent damage.

Audio Special Purpose Selection Notes

Select this component when a single-pole triple-throw (SPTT) analog switching function is required for audio signals. The 58kΩ input impedance suits standard line-level audio sources. Consider the DIP8 package only if through-hole assembly is mandated. Verify that the required crosstalk performance meets or exceeds -70dB for the specific application environment.

Audio Special Purpose Part Context

The NJM2521 belongs to the NJM25xx series of audio switches produced by Nisshinbo Micro Devices Inc. This series includes various configurations for audio signal processing. The 'D' suffix specifically denotes the 8-DIP package variant, distinguishing it from surface-mount options like DMP8 or SSOP8 available in the same functional family.