INTEGRATED CIRCUITS 74ALS253 Dual 4–input multiplexer (3–State) Product specification IC05 Data Handbook 1991 Feb 08 Philips Semiconductors Product specification Dual 4-input multiplexer (3-State) 74ALS253 FEATURES PIN CONFIGURATION • 3-State outputs for bus interface and multiplex operation • Common select inputs • Separate output enable inputs OEa 1 16 S1 2 15 OEb I3a 3 14 S0 I2a 4 13 I3b I1a 5 12 I2b I0a 6 11 I1b Ya 7 10 I0b GND 8 9 Yb DESCRIPTION The 74ALS253 has two identical 4-input multiplexers with 3-State outputs which select 2 bits from four sources by using common select input (S0, S1). When the individual output enable (OEa, OEb) inputs of the 4-input multiplexers are High, the outputs are forced to a High impedance (Z) state. VCC SF00798 The 74ALS253 is the logic implementation of 2-pole, 4-position switch being determined by the logic levels supplied to the common select inputs. To avoid exceeding the maximum current ratings when the outputs of the 3-State devices are tied together, all but one device must be in the High impedance state. Therefore, only one output enable must be achieved at a time. TYPE ORDERING INFORMATION ORDER CODE DESCRIPTION COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C DRAWING NUMBER TYPICAL PROPAGATION DELAY TYPICAL SUPPLY CURRENT (TOTAL) 16-pin plastic DIP 74ALS253N SOT38-4 7.0ns 8mA 16-pin plastic SO 74ALS253D SOT109-1 16-pin plastic SSOP Type II 74ALS253DB SOT338-1 74ALS253 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS DESCRIPTION 74ALS (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW I0a – I3a Port A data inputs 1.0/1.0 20µA/0.1mA I0b – I3b Port B data inputs 1.0/1.0 20µA/0.1mA S0, S1 Common select inputs 1.0/1.0 20µA/0.1mA OEa Port A Output Enable input (active-Low) 1.0/1.0 20µA/0.1mA OEb Port B Output Enable input (active-Low) 1.0/1.0 20µA/0.1mA 3-State outputs 130/240 2.6mA/24mA Ya – Yb NOTE: One (1.0) ALS unit load is defined as: 20µA in the High state and 0.1mA in the Low state. LOGIC SYMBOL IEC/IEEE SYMBOL 6 I0a 14 S0 2 S1 1 OEa 15 OEb 5 I1a 4 I2a 3 I3a 10 I0b 11 I1b 12 I2b 13 14 0 2 2 1 I3b 6 5 Ya EN 0 G 0 3 MUX 7 1 4 2 3 3 15 Yb 10 9 11 12 VCC = Pin 16 GND = Pin 8 1991 Feb 08 7 9 13 SF00799 SC00073 2 853–1378 01670 Philips Semiconductors Product specification Dual 4-input multiplexer (3-State) 74ALS253 LOGIC DIAGRAM OEa FUNCTION TABLE I0a I1a I2a I3a S1 6 5 4 3 2 1 S0 14 I0b 10 I1b I2b 11 12 I3b INPUTS OEb 13 15 S1 I0 I1 I2 I3 OEn Yn X X X X X X H Z L L L X X X L L L L H X X X L H H L X L X X L L H L X H X X L H L H X X L X L L L H X X H X L H H H X X X L L L H X X X H L H H 7 Ya H L X Z 9 Yb VCC = Pin 16 GND = Pin 8 OUTPUTS S0 = = = = High voltage level Low voltage level Don’t care High impedance “off” state SC00074 ABSOLUTE MAXIMUM RATINGS (Operation beyond the limit set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the operating free air temperature range.) RATING UNIT VCC Supply voltage PARAMETER –0.5 to +7.0 V VIN Input voltage –0.5 to +7.0 V IIN Input current –30 to +5 mA SYMBOL VOUT Voltage applied to output in High output state –0.5 to VCC V IOUT Current applied to output in Low output state 48 mA Tamb Operating free-air temperature range 0 to +70 °C Tstg Storage temperature range –65 to +150 °C RECOMMENDED OPERATING CONDITIONS LIMITS SYMBOL PARAMETER MIN NOM MAX 5.0 5.5 UNIT VCC Supply voltage 4.5 VIH High-level input voltage 2.0 VIL Low-level input voltage 0.8 V IIK Input clamp current –18 mA IOH High-level output current –2.6 mA IOL Low-level output current 24 mA +70 °C Tamb 1991 Feb 08 Operating free-air temperature range 0 3 V V Philips Semiconductors Product specification Dual 4-input multiplexer (3-State) 74ALS253 DC ELECTRICAL CHARACTERISTICS (Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL VOH O TEST CONDITIONS1 PARAMETER High level output voltage High-level LIMITS MIN VCC±10%,, VIL = MAX,, VIH = MIN IOH = –0.4mA VCC – 2 IOH = –2.6mA 2.4 IOL = 12mA VOL O Low level output voltage Low-level VCC = MIN,, VIL = MAX,, VIH = MIN VIK Input clamp voltage VCC = MIN, II = IIK IOL = 24mA TYP2 MAX UNIT V V 0.25 0.40 V 0.35 0.50 V –0.73 –1.5 V II Input current at maximum input voltage VCC = MAX, VI = 7.0V 0.1 mA IIH High-level input current VCC = MAX, VI = 2.7V 20 µA IIL Low-level input current VCC = MAX, VI = 0.4V –0.1 mA IOZH Off-state output current, High-level voltage applied VCC = MAX, VI = 2.7V 20 µA IOZL Off-state output current, Low-level voltage applied VCC = MAX, VI = 0.4V –20 µA IO Output current3 VCC = MAX, VO = 2.25V –112 mA 7.0 12 mA ICC Supply current (total) 9.0 14 mA ICC ICCZ –30 VCC = MAX NOTES: 1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type. 2. All typical values are at VCC = 5V, Tamb = 25°C. 3. The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. AC ELECTRICAL CHARACTERISTICS LIMITS SYMBOL PARAMETER TEST CONDITION Tamb = 0°C to +70°C VCC = +5.0V ± 10% CL = 50pF, RL = 500Ω MIN MAX UNIT tPLH tPHL Propagation delay In to Yn Waveform 1 4.0 4.0 12.0 12.0 ns tPLH tPHL Propagation delay Sn to Yn Waveform 1 5.0 7.0 15.0 16.0 ns tPZH tPZL Output enable time, High or Low level OEn to Yn Waveform 2 Waveform 3 1.0 3.0 8.0 9.0 ns tPHZ tPLZ Output disable time, High or Low level OEn to Yn Waveform 2 Waveform 3 1.0 1.0 7.0 7.0 ns 1991 Feb 08 4 Philips Semiconductors Product specification Dual 4-input multiplexer (3-State) 74ALS253 AC WAVEFORMS For all waveforms, VM = 1.3V. In, Sn VM VM tPLH tPHL Yn VM VM SF00802 Waveform 1. Propagation Delay for Data and Select to Output VM OEn tPZH VM OEn VM VM tPZL tPHZ tPLZ 3.5V VOH –0.3V Yn VM Yn VM 0V VOL +0.3V SF00804 SC00075 Waveform 2. 3-State Output Enable Time to High Level and Output Disable Time from High Level Waveform 3. 3-State Output Enable Time to Low Level and Output Disable Time from Low Level TEST CIRCUIT AND WAVEFORMS VCC 7.0V VIN VOUT PULSE GENERATOR tw 90% NEGATIVE PULSE 10% RL CL RL AMP (V) VM VM D.U.T. RT 90% 10% tTHL (tff) tTLH (tr ) tTLH (tr ) tTHL (tf ) 0.3V AMP (V) 90% Test Circuit for 3-State Outputs POSITIVE PULSE VM VM 10% 10% tw SWITCH POSITION TEST SWITCH closed tPLZ, tPZL All other 90% 0.3V Input Pulse Definition open INPUT PULSE REQUIREMENTS Family Amplitude VM DEFINITIONS: RL = Load resistor; see AC electrical characteristics for value. CL = Load capacitance includes jig and probe capacitance; see AC electrical characteristics for value. RT = Termination resistance should be equal to ZOUT of pulse generators. 74ALS 3.5V 1.3V Rep.Rate tw tTLH tTHL 1MHz 500ns 2.0ns 2.0ns SC00072 1991 Feb 08 5 Philips Semiconductors Product specification Dual 4–input multiplexer (3–State) 74ALS253 DIP16: plastic dual in-line package; 16 leads (300 mil) 1991 Feb 08 6 SOT38-4 Philips Semiconductors Product specification Dual 4–input multiplexer (3–State) 74ALS253 SO16: plastic small outline package; 16 leads; body width 3.9 mm 1991 Feb 08 7 SOT109-1 Philips Semiconductors Product specification Dual 4–input multiplexer (3–State) 74ALS253 SSOP16: plastic shrink small outline package; 16 leads; body width 5.3 mm 1991 Feb 08 8 SOT338-1 Philips Semiconductors Product specification Dual 4–input multiplexer (3–State) 74ALS253 DEFINITIONS Data Sheet Identification Product Status Definition Objective Specification Formative or in Design This data sheet contains the design target or goal specifications for product development. Specifications may change in any manner without notice. Preliminary Specification Preproduction Product This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. Product Specification Full Production This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes at any time without notice, in order to improve design and supply the best possible product. Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. LIFE SUPPORT APPLICATIONS Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices, or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale. Copyright Philips Electronics North America Corporation 1997 All rights reserved. Printed in U.S.A. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088–3409 Telephone 800-234-7381 1991 Feb 08 9