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Description : 8 Input Multiplexer with 3-State Outputs, 8 Input Digital Multiplexer

8 Input Multiplexer with 3-State Outputs, 8 Input Digital Multiplexer

Motorola
Motorola => Freescale
Description : 8-Input Multiplexer with 3-STATE Outputs

8-Input Multiplexer with 3-STATE Outputs

The MC54/74F251 is a high-speed 8-Input digital Multiplexer. It provides, in one package, the ability to select one bit of data from up to eight sources. It can be used as a universal function generator to generate any logic function of four variables. Both assertion and negation Outputs are provided.

• Multifunctional Capacity
• On-Chip Select Logic Decoding
• Inverting and Noninverting 3-State Outputs

Motorola
Motorola => Freescale
Description : QUAD 2-INPUT Multiplexer with 3-STATE Outputs

QUAD 2-INPUT Multiplexer with 3-STATE Outputs

The MC74F258A is a quad 2-input Multiplexer with 3-state Outputs. Four bits of data from two sources can be selected using a common Data Select input. The four Outputs present the selected data in the complement (inverted) form. The Outputs may be switched to a high impedance state with a HIGH on the common Output Enable (OE) input, allowing the Outputs to interface directly with bus-oriented systems.

Multiplexer Expansion by Tying Outputs Together
• Inverting 3-State Outputs
• AC Enhanced Version of the F258

Motorola
Motorola => Freescale
Description : Quad 2-Input Multiplexer with 3-State Outputs

The MC74AC258/74ACT258 is a quad 2-input Multiplexer with 3-state Outputs.
Four bits of data from two sources can be selected using a common data select input. The four Outputs present the selected data in the complement (inverted) form. The Outputs may be switched to a high impedance state with a HIGH on the common Output Enable (OE) input, allowing the Outputs to interface directly with bus-oriented systems.

Multiplexer Expansion by Tying Outputs Together
• Inverting 3-State Outputs
Outputs Source/Sink 24 mA
• ′ACT258 Has TTL Compatible Inputs

Motorola
Motorola => Freescale
Description : QUAD 2-INPUT Multiplexer with 3-STATE Outputs

The MC74F257 is a quad 2-input Multiplexer with 3-state Outputs. Four bits of data from two sources can be selected using a common Data Select input. The four Outputs present the selected data in true (non-inverted) form. The Outputs may be switched to a high impedance state with a HIGH on the common Output Enable (OE) input, allowing the Outputs to interface directly with bus oriented systems.

Multiplexer Expansion by Tying Outputs Together
• Non-Inverting 3-State Outputs
• Input Clamp Diodes Limit High-Speed Termination Effects
• AC Enhanced Version of the F257

Fairchild
Fairchild Semiconductor
Description : Quad 2-Input Multiplexer with 3-STATE Outputs

General Description
The 74F258A is a quad 2-input Multiplexer with 3-STATE Outputs. Four bits of data from two sources can be selected using a common data select input. The four Outputs present the selected data in the complement (inverted) form. The Outputs may be switched to a high impedance state with a HIGH on the common Output Enable (OE) input, allowing the Outputs to interface directly with bus-oriented systems.

Features
Multiplexer expansion by tying Outputs together
■ Inverting 3-STATE Outputs

Description : Quad 2-Input Multiplexer with 3-State Outputs

The MC74AC257/74ACT257 is a quad 2−input Multiplexer with 3−state Outputs. Four bits of data from two sources can be selected using a Common Data Select input. The four Outputs present the selected data in true (noninverted) form. The Outputs may be switched to a high impedance state by placing a logic HIGH on the common Output Enable (OE) input, allowing the Outputs to interface directly with bus−oriented systems.

Multiplexer Expansion by Tying Outputs Together
• Noninverting 3−State Outputs
Outputs Source/Sink 24 mA
• ′ACT257 Has TTL Compatible Inputs
• These are Pb−Free Devices

Fairchild
Fairchild Semiconductor
Description : Quad 2-Input Multiplexer with 3-STATE Outputs

General Description
The 74F257A is a quad 2-input Multiplexer with 3-STATE Outputs. Four bits of data from two sources can be selected using a Common Data Select input. The four Outputs present the selected data in true (non-inverted) form. The Outputs may be switched to a high impedance state with a HIGH on the common Output Enable (OE) input, allowing the Outputs to interface directly with bus-oriented systems.

Features
Multiplexer expansion by tying Outputs together
■ Non-inverting 3-STATE Outputs
■ Input clamp diodes limit high-speed termination effects

SLS
System Logic Semiconductor
Description : 8-Input Data Selector/Multiplexer with 3-State Outputs

8-Input Data Selector/Multiplexer with 3-State Outputs
High-Performance Silicon-Gate CMOS

The SL74HC251 is identical in pinout to the LS/ALS251. The device inputs are compatible with standard CMOS Outputs; with pullup resistors, they are compatible with LS/ALSTTL Outputs.
The device selects one of the eight binary Data Inputs, as determined by the Address Inputs. The Output Enable pin must be at a low level for the selected data to appear at the Outputs. If Output Enable is high, the Y and the Y Outputs are in the high-impedance state. This 3-State feature allows the IN74HC251 to be used in bus-oriented systems.

 • Outputs Directly Interface to CMOS, NMOS, and TTL
 • Operating Voltage Range: 2.0 to 6.0 V
 • Low Input Current: 1.0 μA
 • High Noise Immunity Characteristic of CMOS Devices

Description : 8-Input DATA SELECTOR/Multiplexer with 3-STATE Outputs

8-Input DATA SELECTOR/Multiplexer with 3-STATE Outputs
High-Performance Silicon-Gate CMOS

The IN74HC251 is identical in pinout to the LS/ALS251. The device inputs are compatible with standard CMOS Outputs; with pullup resistors, they are compatible with LS/ALSTTL Outputs.
The device selects one of the eight binary Data Inputs, as determined by the Address Inputs. The Output Enable pin must be at a low level for the selected data to appear at the Outputs. If Output Enable is high, the Y and the Y Outputs are in the highimpedance state. This 3-State feature allows the IN74HC251 to be used in bus-oriented systems.

Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 µA
• High Noise Immunity Characteristic of CMOS Devices

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