MC14555B

Application

* Diode Protection on All Inputs
* Active High or Active Low Outputs
* Expandable
* Supply Voltage Range = 3.0 Vdc to 18 Vdc
* All Outputs Buffered
* Capable of Driving Two LowPower TTL Loads or One LowPower Schottky TTL Load Over the Rated Temperature Range


Pinout




Specifications

Symbol	Parameter	Value	Unit
VDD	DC Supply Voltage Range	0.5 to +18.0	V
Vin,Vout	Input or Output Voltage Range(DC or Transient)	0.5 to VDD + 0.5	V
Iin,Iout	Input or Output Current(DC or Transient)per Pin	±10	mA
PD	Power Dissipation, per Package (Note 3.)	500	mW
TA	Ambient Temperature Range	55 to +125
Tstg	Storage Temperature Range	65 to +150
TL	Lead Temperature(8Second Soldering)	260

Description

The MC14555B and MC14556B are constructed with complementary MOS (CMOS) enhancement mode devices. Each Decoder/Demultiplexer has two select inputs (A and B), an active low Enable input (E), and four mutually exclusive outputs (Q0, Q1, Q2, Q3). The MC14555B has the selected output go to the "high" state, and the MC14556B has the selected output go to the "low" state. Expanded decoding such as binarytohexadecimal (1of16), etc., can be achieved by using other MC14555B or MC14556B devices.


Applications of MC14555B include code conversion, address decoding, memory selection control, and demultiplexing (using the Enable input as a data input) in digital data transmission systems.