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 74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs
April 2007
74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs
Features
ICC and IOZ reduced by 50% Multiplexer expansion by tying outputs together Inverting 3-STATE outputs Outputs source/sink 24mA TTL-compatible inputs
tm
General Description
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
74ACT258SC 74ACT258SJ 74ACT258MTC
Package Number
M16A M16D MTC16
Package Description
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" 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 I0a-I0d I1a-I1d Za-Zd
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
FACTTM is a trademark of Fairchild Semiconductor Corporation. (c)1988 Fairchild Semiconductor Corporation 74ACT258 Rev. 1.4 www.fairchildsemi.com
74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs
Logic Symbol
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: IEEE/IEC 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 L
Select Input S
X H H
Data Inputs I0
X X X
Outputs Z
Z H L
I1
X L H
H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance
(c)1988 Fairchild Semiconductor Corporation 74ACT258 Rev. 1.4
www.fairchildsemi.com 2
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 1.
(c)1988 Fairchild Semiconductor Corporation 74ACT258 Rev. 1.4
www.fairchildsemi.com 3
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.
Symbol
VCC IIK Supply Voltage DC Input Diode Current VI = -0.5V VI = VCC + 0.5V VI IOK DC Input Voltage DC Output Diode Current VO = -0.5V VO = VCC + 0.5V VO IO TSTG TJ DC Output Voltage
Parameter
Rating
-0.5V to +7.0V -20mA +20mA -0.5V to VCC + 0.5V -20mA +20mA -0.5V to VCC + 0.5V 50mA 50mA -65C to +150C 140C
DC Output Source or Sink Current Storage Temperature Junction Temperature
ICC or IGND DC VCC or Ground Current per Output Pin
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to absolute maximum ratings.
Symbol
VCC VI VO TA V / t Supply Voltage Input Voltage Output Voltage Operating Temperature Minimum Input Edge Rate:
Parameter
Rating
4.5V to 5.5V 0V to VCC 0V to VCC -40C to +85C 125mV/ns
VIN from 0.8V to 2.0V, VCC @ 4.5V, 5.5V
(c)1988 Fairchild Semiconductor Corporation 74ACT258 Rev. 1.4
www.fairchildsemi.com 4
74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs
DC Electrical Characteristics
Symbol
VIH VIL VOH
Parameter
Minimum HIGH Level Input Voltage Maximum LOW Level Input Voltage Minimum HIGH Level Output Voltage
VCC (V)
4.5 5.5 4.5 5.5 4.5 5.5
TA = +25C Conditions
VOUT = 0.1V or VCC - 0.1V VOUT = 0.1V or VCC - 0.1V IOUT = -50A VIN = VIL or VIH:
TA = -40C to +85C Guaranteed Limits Units
V V V 2.0 2.0 0.8 0.8 4.4 5.4 3.76 4.76 0.1 0.1 0.44 0.44 1.0 2.5 1.5 75 -75 A A mA mA mA A V
Typ.
1.5 1.5 1.5 1.5 4.49 5.49 2.0 2.0 0.8 0.8 4.4 5.4 3.86 4.86 0.001 0.001 0.1 0.1 0.36 0.36 0.1
4.5 5.5 VOL Maximum LOW Level Output Voltage 4.5 5.5
IOH = -24mA IOH = -24mA(1) IOUT = 50A VIN = VIL or VIH:
4.5 5.5 IIN IOZ ICCT IOLD IOHD ICC Maximum Input Leakage Current Maximum 3-STATE Current Maximum ICC/Input Minimum Dynamic Output Current(2) Maximum Quiescent Supply Current 5.5 5.5 5.5 5.5 5.5 5.5
IOL = 24mA IOL= 24mA(1) VI = VCC, GND VI = VIL, VIH; VO = VCC, GND VI = VCC - 2.1V VOLD = 1.65V Max. VOHD = 3.85V Min. VIN = VCC or GND 0.6
0.25
4.0
40.0
Notes: 1. All outputs loaded; thresholds on input associated with output under test. 2. Maximum test duration 2.0ms, one output loaded at a time.
(c)1988 Fairchild Semiconductor Corporation 74ACT258 Rev. 1.4
www.fairchildsemi.com 5
74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs
AC Electrical Characteristics
TA = +25C, CL = 50pF Symbol
tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ
TA = -40C to +85C, CL = 50pF Min.
1.5 1.5 2.0 1.5 1.5 1.5 1.0 1.5
Parameter
Propagation Delay, In to Zn Propagation Delay, In to Zn Propagation Delay, S to Zn Propagation Delay, S to Zn Output Enable Time Output Enable Time Output Disable Time Output Disable Time
VCC (V)(3)
5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0
Min.
2.0 2.0 3.0 1.5 2.0 2.0 1.5 2.0
Typ.
6.5 5.5 7.5 7.0 6.5 6.5 7.0 6.0
Max.
8.5 7.5 10.5 9.5 8.5 8.5 9.0 8.0
Max.
9.5 8.0 11.5 11.0 9.5 9.5 10.0 9.0
Units
ns ns ns ns ns ns ns ns
Notes: 3. Voltage range 5.0 is 5.0V 0.5V.
Capacitance
Symbol
CIN CPD
Parameter
Input Capacitance Power Dissipation Capacitance
Conditions
VCC = OPEN VCC = 5.0V
Typ.
4.5 55.0
Units
pF pF
(c)1988 Fairchild Semiconductor Corporation 74ACT258 Rev. 1.4
www.fairchildsemi.com 6
74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs
Physical Dimensions
Dimensions are in millimeters unless otherwise noted.
Figure 2. 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow Package Number M16A
(c)1988 Fairchild Semiconductor Corporation 74ACT258 Rev. 1.4
www.fairchildsemi.com 7
74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs
Physical Dimensions (Continued) Dimensions are in millimeters unless otherwise noted.
Figure 3. 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M16D
(c)1988 Fairchild Semiconductor Corporation 74ACT258 Rev. 1.4
www.fairchildsemi.com 8
74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs
Physical Dimensions (Continued) Dimensions are in millimeters unless otherwise noted.
5.000.10 4.55 5.90 4.45 7.35
0.65
4.40.1
1.45
5.00 0.11
12
MTC16rev4
Figure 4. 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC16
(c)1988 Fairchild Semiconductor Corporation 74ACT258 Rev. 1.4
www.fairchildsemi.com 9
74ACT258 Quad 2-Input Multiplexer with 3-STATE Outputs
TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. ACEx Across the board. Around the world. ActiveArray Bottomless Build it Now CoolFET CROSSVOLT CTLTM Current Transfer LogicTM DOME 2 E CMOS (R) EcoSPARK EnSigna FACT Quiet SeriesTM (R) FACT (R) FAST FASTr FPS (R) FRFET GlobalOptoisolator GTO
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DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD'S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Advance Information Preliminary Product Status Formative or In Design First Production Definition This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. This datasheet contains preliminary data; supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design. This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design. This datasheet contains specifications on a product that has been discontinued by Fairchild Semiconductor. The datasheet is printed for reference information only.
Rev. I24
2. A critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
No Identification Needed
Full Production
Obsolete
Not In Production
(c)1988 Fairchild Semiconductor Corporation 74ACT258 Rev. 1.4
www.fairchildsemi.com 10


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