74ACT258SC

74ACT258SC Datasheet

74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs

Part	Datasheet
74ACT258SC	74ACT258SC (pdf)

Related Parts	Information
74ACT258MTCX	74ACT258MTCX
74ACT258SCX	74ACT258SCX
74ACT258SJX	74ACT258SJX
74ACT258SJ	74ACT258SJ

PDF Datasheet Preview
74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs 74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs April 2007 • ICC and IOZ reduced by 50% • Multiplexer expansion by tying outputs together • Inverting 3-STATE outputs • Outputs source/sink 24mA • TTL-compatible inputs The ACT258 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. Ordering Information Order Number Package Number Package Description 74ACT258SC 74ACT258SJ 74ACT258MTC M16A M16D MTC16 16-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-012, Narrow Body 16-Lead Small Outline Package SOP , EIAJ TYPE 11, 5.3mm Wide 16-Lead Thin Shrink Small Outline Package TSSOP , JEDEC MO-153, 4.4mm Wide Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number. Connection Diagram Pin Description Pin Names S OE Description Common Data Select Input 3-STATE Output Enable Input Data Inputs from Source 0 Data Inputs from Source 1 3-STATE Inverting Data Outputs FACT is a trademark of Fairchild Semiconductor Corporation. 74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs Logic Symbol IEEE/IEC Functional Description The ACT258 is a quad 2-input multiplexer with 3-STATE outputs. It selects four bits of data from two sources under control of a common Select input S . When the Select input is LOW, the I0x inputs are selected and when Select is HIGH, the I1x inputs are selected. The data on the selected inputs appears at the outputs in inverted form. The ACT258 is the logic implementation of a 4-pole, 2-position switch where the position of the switch is determined by the logic levels supplied to the Select input. The logic equations for the outputs are shown below: Za = OE • I1a • S + I0a • S Zb = OE • I1b • S + I0b • S Zc = OE • I1c • S + I0c • S Zd = OE • I1d • S + I0d • S When the Output Enable input OE is HIGH, the outputs are forced to a high impedance state. If the outputs of the 3-STATE devices are tied together, all but one device must be in the high impedance state to avoid high currents that would exceed the maximum ratings. Designers should ensure that Output Enable signals to 3-STATE devices whose outputs are tied together are designed so there is no overlap. Truth Table Output Enable OE H L Select Input H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance Data Inputs Outputs Z H L 1988 Fairchild Semiconductor Corporation 74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs Logic Diagram Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. Figure 1988 Fairchild Semiconductor Corporation 74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Parameter VCC IIK VI IOK VO IO ICC or IGND TSTG TJ Supply Voltage DC Input Diode Current VI = VI = VCC + 0.5V DC Input Voltage DC Output Diode Current VO = VO = VCC + 0.5V DC Output Voltage DC Output Source or Sink Current DC VCC or Ground Current per Output Pin Storage Temperature Junction Temperature Rating to +7.0V +20mA to VCC + 0.5V +20mA to VCC + 0.5V ±50mA ±50mA to +150°C 140°C

PDF Datasheet Preview

74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs
74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs

April 2007
• ICC and IOZ reduced by 50%
• Multiplexer expansion by tying outputs together
• Inverting 3-STATE outputs
• Outputs source/sink 24mA
• TTL-compatible inputs

The ACT258 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.
Ordering Information

Order Number

Package Number

Package Description
74ACT258SC
74ACT258SJ 74ACT258MTC

M16A

M16D MTC16
16-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-012, Narrow Body
16-Lead Small Outline Package SOP , EIAJ TYPE 11, 5.3mm Wide
16-Lead Thin Shrink Small Outline Package TSSOP , JEDEC MO-153, 4.4mm Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.

Connection Diagram

Pin Description

Pin Names S OE

Description Common Data Select Input 3-STATE Output Enable Input Data Inputs from Source 0 Data Inputs from Source 1 3-STATE Inverting Data Outputs

FACT is a trademark of Fairchild Semiconductor Corporation.
74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs

Logic Symbol

IEEE/IEC

Functional Description

The ACT258 is a quad 2-input multiplexer with 3-STATE outputs. It selects four bits of data from two sources under control of a common Select input S . When the Select input is LOW, the I0x inputs are selected and when Select is HIGH, the I1x inputs are selected. The data on the selected inputs appears at the outputs in inverted form. The ACT258 is the logic implementation of a 4-pole, 2-position switch where the position of the switch is determined by the logic levels supplied to the Select input. The logic equations for the outputs are shown below:

Za = OE
• I1a
• S + I0a
• S

Zb = OE
• I1b
• S + I0b
• S

Zc = OE
• I1c
• S + I0c
• S

Zd = OE
• I1d
• S + I0d
• S

When the Output Enable input OE is HIGH, the outputs are forced to a high impedance state. If the outputs of the 3-STATE devices are tied together, all but one device must be in the high impedance state to avoid high currents that would exceed the maximum ratings. Designers should ensure that Output Enable signals to 3-STATE devices whose outputs are tied together are designed so there is no overlap.

Truth Table

Output Enable

OE H L

Select Input

H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance

Data Inputs

Outputs Z H L
1988 Fairchild Semiconductor Corporation
74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs

Logic Diagram

Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.

Figure
1988 Fairchild Semiconductor Corporation
74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only.

Parameter

VCC IIK

VI IOK

VO IO ICC or IGND TSTG TJ

Supply Voltage DC Input Diode Current

VI = VI = VCC + 0.5V DC Input Voltage DC Output Diode Current VO = VO = VCC + 0.5V DC Output Voltage DC Output Source or Sink Current DC VCC or Ground Current per Output Pin Storage Temperature Junction Temperature

Rating to +7.0V
+20mA to VCC + 0.5V
+20mA to VCC + 0.5V ±50mA ±50mA to +150°C 140°C

More datasheets: 2381 574 11703 | 2381 574 10603 | 2381 574 12003 | 62-PMB-050-6-12 | FDPC1002S | AK4125VF | 712 | 1D16M1100 | FDAF62N28 | AD9762ARURL

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived 74ACT258SC Datasheet file may be downloaded here without warranties.

Datasheet ID: 74ACT258SC 513170