SN54/74LS158 QUAD 2-INPUT MULTIPLEXER The LSTTL/ MSI SN54L/ 74LS158 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 LS158 can also generate any four of the 16 different functions of two variables. The LS158 is fabricated with the Schottky barrier diode process for high speed and is completely compatible with all Motorola TTL families. • • • • • • QUAD 2-INPUT MULTIPLEXER Schottky Process for High Speed Multifunction Capability Inverted Outputs Input Clamp Diodes Limit High Speed Termination Effects ESD > 3500 Volts Special Circuitry Ensures Glitch Free Multiplexing LOW POWER SCHOTTKY J SUFFIX CERAMIC CASE 620-09 CONNECTION DIAGRAM DIP (TOP VIEW) 16 1 NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package. N SUFFIX PLASTIC CASE 648-08 16 1 PIN NAMES LOADING (Note a) LOW HIGH S E I0a – I0d I1a – I1d Za – Zd Common Select Input Enable (Active LOW) Input Data Inputs from Source 0 Data Inputs from Source 1 Inverted Outputs (Note b) 0.5 U.L. 0.5 U.L. 0.25 U.L. 0.25 U.L. 5 (2.5) U.L. 1.0 U.L. 1.0 U.L. 0.5 U.L. 0.5 U.L. 10 U.L. D SUFFIX SOIC CASE 751B-03 16 1 ORDERING INFORMATION NOTES: a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW. b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74) Temperature Ranges. SN54LSXXXJ SN74LSXXXN SN74LSXXXD Ceramic Plastic SOIC LOGIC DIAGRAM LOGIC SYMBOL FAST AND LS TTL DATA 5-273 SN54/74LS158 FUNCTIONAL DESCRIPTION The LS158 is a Quad 2-input Multiplexer fabricated with the Schottky barrier diode process for high speed. It 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 LS158 is the logic implementation of a 4-pole, 2-position switch where the position of the switch is deter- mined by the logic levels supplied to the Select Input. A common use of the LS158 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 LS158 can generate four functions of two variables with one variable common. This is useful for implementing gating functions. TRUTH TABLE ENABLE SELECT INPUT E S I0 I1 Z H L L L L X L L H H X L H X X X X X L H H H L H L INPUTS OUTPUT H = HIGH Voltage Level L = LOW Voltage Level X = Don’t Care GUARANTEED OPERATING RANGES Min Typ Max Unit VCC Symbol Supply Voltage Parameter 54 74 4.5 4.75 5.0 5.0 5.5 5.25 V TA Operating Ambient Temperature Range 54 74 – 55 0 25 25 125 70 °C IOH Output Current — High 54, 74 – 0.4 mA IOL Output Current — Low 54 74 4.0 8.0 mA FAST AND LS TTL DATA 5-274 SN54/74LS158 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter VIH Input HIGH Voltage VIL Input LOW Voltage VIK Input Clamp Diode Voltage VOH Output HIGH Voltage VOL Output LOW Voltage IIH Min Typ Max Unit 2.0 54 0.7 74 0.8 – 0.65 – 1.5 Test Conditions V Guaranteed Input HIGH Voltage for All Inputs V Guaranteed Input LOW Voltage for All Inputs V VCC = MIN, IIN = – 18 mA 54 2.5 3.5 V 74 2.7 3.5 V VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table VCC = VCC MIN, VIN = VIL or VIH per Truth Table 54, 74 0.25 0.4 V IOL = 4.0 mA 74 0.35 0.5 V IOL = 8.0 mA 20 40 µA VCC = MAX, VIN = 2.7 V 0.1 0.2 mA VCC = MAX, VIN = 7.0 V – 0.4 – 0.8 mA VCC = MAX, VIN = 0.4 V – 100 mA VCC = MAX Input HIGH Current I0, I1 E, S I0, I1 E, S IIL Input LOW Current I0, I1 E, S IOS Short Circuit Current (Note 1) ICC Power Supply Current 8.0 mA VCC = MAX All inputs at 4.5 V. All outputs open. ICC Power Supply Current 11 mA VCC = MAX All other input combinations. All outputs open. – 20 Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Limits Symbol Parameter Min Typ Max Unit Test Conditions tPLH tPHL Propagation Delay Data to Output 7.0 10 12 15 ns Figure 2 tPLH tPHL Propagation Delay Enable to Output 11 18 17 24 ns Figure 1 tPLH tPHL Propagation Delay Select to Output 13 16 20 24 ns Figure 2 VCC = 5.0 V CL = 15 pF AC WAVEFORMS Figure 1 Figure 2 FAST AND LS TTL DATA 5-275 Case 751B-03 D Suffix 16-Pin Plastic SO-16 -A- "! ! " " ! " # 1 %# ) ! !" $ !" 8 C -T- D M K " ! #! J F ! Case 648-08 N Suffix 16-Pin Plastic R X 45° G " ! ) #! P ! " " 9 -B- ! 16 & ! ! ° ° ° ° ( ( ( ( "! ! " " ! ! ' " " ! ' ! " # & -A- 16 9 1 8 ! ! $ ! B # ) " ! " # ) !" $ !" ) F L C S -T- K H G M J D " Case 620-09 J Suffix 16-Pin Ceramic Dual In-Line -A- ! ! ! ! ° ° ° ° "! ! " 16 " ) " L K M N J G D " $ " $ ! " " ! ! FAST AND LS TTL DATA 5-276 & # ) !" $ !" ) -T $ " " C F & 8 E ! ! ! " " -B1 & 9 * * ! ! ! ! * * ! ° ° ! ° ° Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary in different applications. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of others. 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Literature Distribution Centers: USA: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036. EUROPE: Motorola Ltd.; European Literature Centre; 88 Tanners Drive, Blakelands, Milton Keynes, MK14 5BP, England. JAPAN: Nippon Motorola Ltd.; 4-32-1, Nishi-Gotanda, Shinagawa-ku, Tokyo 141, Japan. ASIA PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Center, No. 2 Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong. ◊ FAST AND LS TTL DATA 5-277