MC74HC251A Series

8-Input Multiplexer (3-state)

Catalog

8-Input Multiplexer (3-state)

Part	Voltage Supply Source	Package / Case	Package / Case [x]	Package / Case [y]	Operating Temperature [Max]	Operating Temperature [Min]	Type	Supplier Device Package	Mounting Type	Independent Circuits	Voltage - Supply [Min]	Voltage - Supply [Max]	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Circuit [custom]	Circuit [custom]	Package / Case	Package / Case
ON Semiconductor MM74HC251MX	Single Supply	16-SOIC	0.154 in	3.9 mm	85 °C	-40 °C	Multiplexer	16-SOIC	Surface Mount	1	2 V	6 V	5.2 mA	5.2 mA	8:1	1
ON Semiconductor MM74HC251N	Single Supply	16-DIP			85 °C	-40 °C	Multiplexer	16-PDIP	Through Hole	1	2 V	6 V	5.2 mA	5.2 mA	8:1	1	0.3 in	7.62 mm
ON Semiconductor MM74HC251SJX	Single Supply	16-SOIC			85 °C	-40 °C	Multiplexer	16-SOP	Surface Mount	1	2 V	6 V	5.2 mA	5.2 mA	8:1	1	0.209 "	5.3 mm
ON Semiconductor MC74HC251ADR2G	Single Supply	16-SOIC	0.154 in	3.9 mm	125 °C	-55 °C	Multiplexer	16-SOIC	Surface Mount	1	2 V	6 V	5.2 mA	5.2 mA	8:1	1
ON Semiconductor NLV74HC251ADR2G	Single Supply	16-SOIC	0.154 in	3.9 mm	125 °C	-55 °C	Multiplexer	16-SOIC	Surface Mount	1	2 V	6 V	5.2 mA	5.2 mA	8:1	1
ON Semiconductor MM74HC251MX	Single Supply	16-SOIC	0.154 in	3.9 mm	85 °C	-40 °C	Multiplexer	16-SOIC	Surface Mount	1	2 V	6 V	5.2 mA	5.2 mA	8:1	1
ON Semiconductor MM74HC251SJ	Single Supply	16-SOIC			85 °C	-40 °C	Multiplexer	16-SOP	Surface Mount	1	2 V	6 V	5.2 mA	5.2 mA	8:1	1	0.209 "	5.3 mm
ON Semiconductor MC74HC251FL1	Single Supply				125 °C	-55 °C	Multiplexer			1	2 V	6 V	5.2 mA	5.2 mA	8:1	1

Catalog

8-Input Multiplexer (3-state)

Key Features

• Output Drive Capability: 10 LSTTL Loads

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 2 to 6 V

• Low Input Current: 1 A

• High Noise Immunity Characteristic of CMOS Devices

• These are PbFree Devices

Description

The MC54/74HC251 is identical in pinout to the LS251. The deviceinputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs.This device selects one of the eight binary Data Inputs, as determined by the Address Inputs. The Output Enable pin must be a low level for the selected data to appear at the outputs. If Output Enable is high, both the Y and the Y outputs are in the high impedance state. This 3 state feature allows the HC251 to be used in bus oriented systems. The HC251 is similar in function to the HC251 which does not have 3 state outputs.