HEF4519BP Datasheet PDF – Quadruple 2-input Multiplexer

Part Number : HEF4519BP

Function : Quadruple 2-input Multiplexer

Package : DIP 16 Pin

Manufacturers : Philips Electronics

Pinouts :

HEF4519BP datasheet


Description :

The HEF4519B provides four multiplexing circuits with common select inputs (SA, SB); each circuit contains two inputs (An, Bn) and one output (On). It may be used to select four bits of information from one of two sources. The HEF4519B cannot be used to multiplex analogue signals. The outputs utilize standard buffers for best performance.

Ordering Information

HEF4519BP(N): 16-lead DIL; plastic (SOT38-1)
HEF4519BD(F): 16-lead DIL; ceramic (cerdip) (SOT74)
HEF4519BT(D): 16-lead SO; plastic (SOT109-1)

Logic Diagram

Application Information

Some examples of applications for the HEF4519B are:

1. 2-input multiplexers.
2.True/complement selectors

Other data sheets within the file : HEF4519, HEF4519BD, HEF4519BT, HEF4519BDB, HEF4519BPB

HEF4519BP Datasheet PDF Download

HEF4519BP pdf

IL91531 Datasheet PDF – Parallel Input Tone / Pulse Dialer

Part Number : IL91531

Function : Parallel Input Tone / Pulse Dialer ( HIGH-PERFORMANCE SILICON-GATE CMOS )

Package : DIP 16 Pin Type

Manufacturers : Integral

Pinouts :

IL91531 datasheet


Description :

The IN91531N provides a  4-bit data input and a handshaking signal to serve as microcomputer interfaces. Under microcomputer control the IN91531N generates both a DTMF signal and a pulse output for telephone dialing. All necessary dual -tone frequencies and dial pulse outputs are derived from the widely used TV crystal standard, providing high accuracy and stability. The required sinusoidal waveform for individual tones is digitally synthesized on the chip, resulting in a waveform with very low total harmonic distortion.


1. TTL compatible inputs and outputs
2. Uses TV crystal standard (3.58 MHz) to derive all frequencies, providing high accuracy and stability
3. Operating voltage: 2.5 to 5.5 Volts
4. Selectable M/B ratio
5. 10 PPS dial rate
6. High group tone pre-emphasis : 2 dB
7. Low total harmonic distortion in DTMF signaling

Other data sheets within the file : 91531, IL91531N

IL91531 Datasheet PDF Download

IL91531 pdf