Datasheet for the PT2262, a remote-control encoder IC widely used in RF and infrared transmitters such as 315/433 MHz key fobs.

PDF datasheet of about 180 KB for the SFH506 series, with the _xx in the name standing for the carrier-frequency variants of the family.

PDF datasheet of 2.58 MB for the Microchip PIC16C5x series, the original baseline line of small 8-bit OTP or EPROM controllers found in older appliances, remotes and…

Datasheet in PDF form for the Atmel AT89C2051, a 20-pin 8051-family microcontroller with 2 KB of flash, 128 bytes of RAM and a built-in analog comparator on P1.0 and…

Datasheet for the MC145436A, a Motorola DTMF receiver that decodes telephone touch-tone dual-frequency signals into 4-bit codes.

Microchip datasheet for the rfPIC12C509AG and rfPIC12C509AF, microcontrollers with an integrated RF transmitter, in a 1.33 MB PDF.

Datasheet for the TSOP12XX series of infrared receiver modules, 108 KB PDF. These modules integrate a photodiode, preamplifier and demodulator, and the last digits of…

Datasheet for the SFH506 infrared receiver module, a 179 KB PDF, likely a near-identical copy or edition of the series sheet that carries the _xx suffix.

Datasheet for the MT8870, a widely used DTMF receiver that decodes telephone keypad tones into a 4-bit code with a strobe output.