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Part: 74ACT158MTCX
Category:
Description: Quad 2-Input Multiplexer
Company: Fairchild Semiconductor
Datasheet: Download 74ACT158MTCX datasheet File size : 232 kB
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74ACT158 Quad 2-Input Multiplexer
November 1988 Revised November 1999
74ACT158 Quad 2-Input Multiplexer
General Description
The ACT158 is a high-speed quad 2-input multiplexer. It selects four bits of data from two sources using the common Select and Enable inputs. The four buffered outputs present the selected data in the inverted form. The ACT158 can also be used as a function generator.
Features
s ICC reduced by 50% s Outputs source/sink 24 mA s TTL-compatible inputs
Ordering Code:
Order Number 74ACT158SC 74ACT158PC 74ACT158MTC 74ACT158SJ Package Number M16A M16D MTC16 N16E Package Description 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow Body 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Device also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering code.
Logic Symbols
Connection Diagram
IEE/IEC
Pin Descriptions
Pin Names I0aI0d I1aI1d E S ZaZd Description Source 0 Data Inputs Source 1 Data Inputs Enable Input Select Input Inverted Outputs
FACT is a trademark of Fairchild Semiconductor Corporation.
© 1999 Fairchild Semiconductor Corporation
DS009930
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74ACT158
Functional Description
The ACT158 quad 2-input multiplexer selects four bits of data from two sources under the control of a common Select input (S) and presents the data in inverted form at the four outputs. The Enable input (E) is active-LOW. When E is HIGH, all of the outputs (Z) are forced HIGH regardless of all other inputs. The ACT158 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. A common use of the ACT158 is the moving of data from two groups of registers to four common output busses. The particular register from which the data comes is determined by the state of the Select input. A less obvious use is as a function generator. The ACT158 can generate four functions of two variables with one variable common. This is useful for implementing gating functions.
Truth Table
Inputs E H L L L L S X L L H H I0 X L H X X I1 X X X L H Outputs Z H H L H L
H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial
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.
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74ACT158
Absolute Maximum Ratings(Note 1)
Supply Voltage (VCC) DC Input Diode Current (IIK) VI = -0.5V VI = VCC + 0.5V DC Input Voltage (VI) DC Output Diode Current (IOK) VO = -0.5V VO = VCC + 0.5V DC Output Voltage (VO) DC Output Source or Sink Current (IO) DC VCC or Ground Current per Output Pin (ICC or IGND) Storage Temperature (TSTG) Junction Temperature (TJ) ±50 mA -65°C to +150°C 140°C ±50 mA -20 mA +20 mA -0.5V to VCC + 0.5V -20 mA +20 mA -0.5V to VCC + 0.5V -0.5V to +7.0V
Recommended Operating Conditions
Supply Voltage (VCC) Input Voltage (VI) Output Voltage (VO) Operating Temperature (TA) Minimum Input Edge Rate (V/t) VIN from 0.8V to 2.0V VCC @ 4.5V, 5.5V 125 mV/ns 4.5V to 5.5V 0V to VCC 0V to VCC -40°C to +85°C
Note 1: Absolute maximum ratings are those values beyond which damage to the device may occur. The databook specifications should be met, without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input loading variable. Fairchild does not recommend operation of FACT circuits outside databook specifications.
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 4.5 5.5 VOL Maximum LOW Level Output Voltage 4.5 5.5 4.5 5.5 IIN ICCT IOLD IOHD ICC Maximum Input Leakage Current Maximum ICC/Input Minimum Dynamic Output Current (Note 3) Maximum Quiescent Supply Current 5.5 5.5 5.5 5.5 5.5 4.0 0 .6 0.001 0.001 TA = +25°C 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 0.1 0.1 0.36 0.36 ±0.1 TA = -40°C to +85°C Guaranteed Limits 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 1.5 75 -75 40.0 µA mA mA mA µA V Units V V V Conditions VOUT = 0.1V or VCC - 0.1V VOUT = 0.1V or VCC - 0.1V IOUT = -50 µA VIN = VIL or VIH V IOH = -24 mA IOH = -24 mA (Note 2) IOUT = 50 µA VIN = VIL or VIH V IOL = 24 mA IOL = 24 mA (Note 2) VI = VCC, GND VI = VCC - 2.1V VOLD = 1.65V Max VOHD = 3.85V Min VIN = VCC or GND
Note 2: All outputs loaded; thresholds on input associated with output under test. Note 3: Maximum test duration 2.0 ms, one output loaded at a time.
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74ACT158
AC Electrical Characteristics
Symbol tPLH tPHL tPLH tPHL tPLH tPHL Parameter Propagation Delay S to Zn Propagation Delay S to Zn Propagation Delay E to Zn Propagation Delay E to Zn Propagation Delay In to Zn Propagation Delay In to Zn
Note 4: Voltage Range 5.0 is 5.0V ± 0.5V
VCC (V) (Note 4) 5.0 5.0 5.0 5.0 5.0 5.0
TA = +25°C CL = 50 pF Min 2.5 1.5 1.5 1.5 1.5 1.5 Typ 6.0 5.5 5.5 5.5 4.5 4.0 Max 9 .5 9 .0 9 .5 9 .5 8 .0 6 .5
TA = -40°C to +85°C CL = 50 pF Min 2.0 1.5 1.5 1.5 1.0 1.0 Max 11.0 10.0 10.5 10.5 8 .5 7 .5
Units
ns ns ns ns ns ns
Capacitance
Symbol CIN CPD Parameter Input Capacitance Power Dissipation Capacitance Typ 4 .5 45.0 Units pF pF VCC = OPEN VCC = 5.0V Conditions
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74ACT158
Physical Dimensions inches (millimeters) unless otherwise noted
16- Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow Body Package Number M16A
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