SN54/74LS353 DUAL 4-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS The LSTTL/ MSI SN54/ 74LS353 is a Dual 4-Input Multiplexer with 3-state outputs. It can select two bits of data from four sources using common select inputs. The outputs may be individually switched to a high impedance state with a HIGH on the respective Output Enable (E0) inputs, allowing the outputs to interface directly with bus oriented systems. It is fabricated with the Schottky barrier diode process for high speed and is completely compatible with all TTL families. • • • • DUAL 4-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS LOW POWER SCHOTTKY Inverted Version of the SN54 / 74LS253 Schottky Process for High Speed Multifunction Capability Input Clamp Diodes Limit High Speed Termination Effects J SUFFIX CERAMIC CASE 620-09 16 CONNECTION DIAGRAM DIP (TOP VIEW) 1 NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package. PIN NAMES N SUFFIX PLASTIC CASE 648-08 16 1 D SUFFIX SOIC CASE 751B-03 16 1 LOADING (Note a) LOW HIGH S0, S1 Common Select Inputs Multiplexer A E0a I0A – I3a Za Output Enable (Active LOW) Input Multiplexer Inputs Multiplexer Output (Note b) 0.5 U.L. 0.25 U.L. 0.5 U.L. 0.5 U.L. 65 (25) U.L. 0.25 U.L. 0.25 U.L. 15 (7.5) U.L. ORDERING INFORMATION SN54LSXXXJ SN74LSXXXN SN74LSXXXD Ceramic Plastic SOIC LOGIC SYMBOL Multiplexer B E0b I0b – I3b Zb Output Enable (Active LOW) Input Multiplexer Inputs Multiplexer Output (Note b) 0.5 U.L. 0.5 U.L. 65 (25) U.L. 0.25 U.L. 0.25 U.L. 15 (7.5) U.L. NOTES: a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW. b) The Output LOW drive factor is 7.5 U.L. for Military (54) and 15 U.L. for Commercial (74) Temperature Ranges. The Output HIGH drive factor is 25 U.L. for Military and 65 U.L. for Commercial Temperature Ranges. FAST AND LS TTL DATA 5-510 SN54/74LS353 LOGIC DIAGRAM FUNCTIONAL DESCRIPTION The SN54 / 74LS353 contains two identical 4-input Multiplexers with 3-state outputs. They select two bits from four sources selected by common select inputs (S0, S1). The 4-input multiplexers have individual Output Enable (E0a, E0b) inputs which when HIGH, forces the outputs to a high impedance (high Z) state. The logic equations for the outputs are shown below: Za = E0a • (I0a • S1 • S0 + I1a • S1 • S0 + I2a • S1 • S0 + I3a • S1 • S0) Zb = E0b • (I0b • S1 • S0 + I1b • S1 • S0 + I2b • S1 • S0 + I3b • S1 • S0) If the outputs of 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 that there is no overlap. TRUTH TABLE SELECT INPUTS DATA INPUTS OUTPUT ENABLE OUTPUT S0 S1 I0 I1 I2 I3 E0 Z X L L H H L L H H X L L L L H H H H X L H X X X X X X X X X L H X X X X X X X X X L H X X X X X X X X X L H H L L L L L L L L (Z) H L H L H L H L H = HIGH Level L = LOW Level X = Immaterial (Z) = High Impedance (off) Address inputs S0 and S1 are common to both sections. FAST AND LS TTL DATA 5-511 SN54/74LS353 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 – 1.0 –2.6 mA IOL Output Current — Low 54 74 12 24 mA DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Min Parameter VIH Input HIGH Voltage VIL Input LOW Voltage VIK Input Clamp Diode Voltage VOH Output HIGH Voltage VOL Output LOW Voltage QA – QH IOZH Typ Max Unit 2.0 V V Guaranteed Input LOW Voltage for All Inputs V VCC = MIN, IIN = – 18 mA 0.7 54 0.8 74 – 0.65 – 1.5 Test Conditions Guaranteed Input HIGH Voltage for All Inputs 54 2.4 3.4 V 74 2.4 3.1 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 = 12 mA 74 0.35 0.5 V IOL = 24 mA Output Off Current HIGH 20 µA VCC = MAX, VOUT = 2.7 V IOZL Output Off Current LOW – 20 µA VCC = MAX, VOUT = 0.4 V 20 IIH Input HIGH Current µA VCC = MAX, VIN = 2.7 V IIL Input LOW Current IOS Short Circuit Current (Note 1) ICC 0.1 mA VCC = MAX, VIN = 7.0 V – 0.4 mA VCC = MAX, VIN = 0.4 V – 130 mA VCC = MAX Power Supply Current Total, Output 3-State 14 mA VCC = MAX Total, Output LOW 12 – 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, VCC = 5.0 V) Limits Typ Max Unit tPLH tPHL Symbol Propagation Delay, Data to Output Parameter 11 13 25 20 ns Figure 1 tPLH tPHL Propagation Delay, Select to Output 20 21 45 32 ns Figure 1 or 2 tPZH Output Enable Time to HIGH Level 11 23 ns Figures 4, 5 tPZL Output Enable Time to LOW Level 15 23 ns Figures 3, 5 tPLZ Output Disable Time to LOW Level 12 27 ns Figures 3, 5 tPHZ Output Disable Time to HIGH Level 27 41 ns Figures 4, 5 Min Test Conditions CL = 15 pF CL = 5.0 pF FAST AND LS TTL DATA 5-512 SN54/74LS353 3-STATE WAVEFORMS Figure 2 Figure 1 ≈ ≥ ≈ Figure 3 Figure 4 AC LOAD CIRCUIT SWITCH POSITIONS Ω * Includes Jig and Probe Capacitance. Figure 5 FAST AND LS TTL DATA 5-513 SYMBOL SW1 SW2 tPZH Open Closed tPZL Closed Open tPLZ Closed Closed tPHZ Closed Closed 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 5-514 & # ) !" $ !" ) -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. 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Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. 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 5-515