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DM74S151 1-of-8 Data Selector/Multiplexer with Complementary Outputs
August 1986 Revised April 2000
DM74S151 1-of-8 Data Selector/Multiplexer with Complementary Outputs
General Description
These data selectors/multiplexers contain full on-chip decoding to select the desired data source. The DM74S151 selects one-of-eight data sources. The DM74S151 has a strobe input which must be at a low logic level to enable these devices. A high level at the strobe forces the W output HIGH and the Y output LOW. The DM74S151 features complementary W and Y outputs.
Features
s Select one-of-eight data lines s Performs parallel-to-serial conversion s Permits multiplexing from N lines to one line s Also for use as Boolean function generator s Typical average propagation delay time, data input to W output 4.5 ns s Typical power dissipation 225 mW
Ordering Code:
Order Number DM74S151N Package Number N16E Package Description 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Connection Diagram
Function Table
Inputs Select C X L L L L H H H H B X L L H H L L H H A X L H L H L H L H Strobe S H L L L L L L L L Outputs Y L D0 D1 D2 D3 D4 D5 D6 D7 W H D0 D1 D2 D3 D4 D5 D6 D7
H = HIGH Level L = LOW Level X = Don't Care D0, D1...D7 = The level of the respective D input
(c) 2000 Fairchild Semiconductor Corporation
DS006468
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DM74S151
Logic Diagram
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DM74S151
Absolute Maximum Ratings(Note 1)
Supply Voltage Input Voltage Operating Free Air Temperature Range Storage Temperature Range 7V 5.5V 0C to +70C -65C to +150C
Note 1: The "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The "Recommended Operating Conditions" table will define the conditions for actual device operation.
Recommended Operating Conditions
Symbol VCC VIH VIL IOH IOL TA Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Current LOW Level Output Current Free Air Operating Temperature 0 Parameter Min 4.75 2 0.8 -1 20 70 Nom 5 Max 5.25 Units V V V mA mA C
Electrical Characteristics
over recommended operating free air temperature (unless otherwise noted) Symbol VI VOH VOL II IIH IIL IOS ICC Parameter Input Clamp Voltage HIGH Level Output Voltage LOW Level Output Voltage Input Current @ Max Input Voltage HIGH Level Input Current LOW Level Input Current Short Circuit Output Current Supply Current Conditions VCC = Min, II = -18 mA VCC = Min, IOH = Max, VIL = Max, VIH = Min VCC = Min, IOL = Max VIH = Min, VIL = Max VCC = Max, VI = 5.5V VCC = Max, VI = 2.7V VCC = Max, VI = 0.5V VCC = Max (Note 3) VCC = Max (Note 4) -40 45 2.7 3.4 0.5 1 50 -2 -100 70 Min Typ (Note 2) Max -1.2 Units V V V mA A mA mA mA
Note 2: All typicals are at VCC = 5V, TA = 25C. Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second. Note 4: ICC is measured with the strobe and data select inputs at 4.5V, all other inputs and outputs OPEN.
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DM74S151
Switching Characteristics
at VCC = 5V and TA = 25C RL = 280 Symbol tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL Parameter Propagation Delay Time LOW-to-HIGH Level Output Propagation Delay Time HIGH-to-LOW Level Output Propagation Delay Time LOW-to-HIGH Level Output Propagation Delay Time HIGH-to-LOW Level Output Propagation Delay Time LOW-to-HIGH Level Output Propagation Delay Time HIGH-to-LOW Level Output Propagation Delay Time LOW-to-HIGH Level Output Propagation Delay Time HIGH-to-LOW Level Output Propagation Delay Time LOW-to-HIGH Level Output Propagation Delay Time HIGH-to-LOW Level Output Propagation Delay Time LOW-to-HIGH Level Output Propagation Delay Time HIGH-to-LOW Level Output From (Input) To (Output) Select to Y (4 Levels) Select to Y (4 Levels) Select to W (3 Levels) Select to W (3 Levels) Strobe to Y Strobe to Y Strobe to W Strobe to W D0 thru D7 to Y D0 thru D7 to Y D0 thru D7 to W D0 thru D7 to W CL = 15 pF Min Max 18 18 15 13.5 16.5 18 13 12 12 12 7 7 CL = 50 pF Min Max 21 21 18 17 19 21 16 16 15 15 9 10 ns ns ns ns ns ns ns ns ns ns ns ns Units
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DM74S151 1-of-8 Data Selector/Multiplexer with Complementary Outputs
Physical Dimensions inches (millimeters) unless otherwise noted
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N16E
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. 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 THE PRESIDENT 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 to the user. 5 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. www.fairchildsemi.com
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