INTEGRATED CIRCUITS 74ALS240A/74ALS240A–1 Octal inverter buffer (3–State) Product specification IC05 Data Handbook 1991 Feb 08 Philips Semiconductors Product specification 74ALS240A/ 74ALS240A-1 Octal inverter buffer (3-State) FEATURES PIN CONFIGURATION • Octal bus interface • 3-State buffer outputs sink 24mA and source 15mA • The -1 version sinks 48 mA OEa 1 20 VCC Ia0 2 19 OEb Yb0 3 18 Ya0 DESCRIPTION The 74ALS240A is an octal buffer that is ideal for driving bus lines or buffer memory address registers. The outputs are all capable of sinking 24mA and sourcing up to 15mA, producing very good capacitive drive characteristics. The device features two output enables, OEa and OEb, each controlling four of the 3-State outputs. 4 17 Ib0 5 16 Ya1 Ia2 6 15 Ib1 Yb2 7 14 Ya2 Ia3 8 13 Ib2 Yb3 9 12 Ya3 GND 10 The 74ALS240A-1 sinks 48 mA IOL if the VCC is limited to 5.0V ±0.25V. 11 Ib3 SF00320 TYPICAL PROPAGATION DELAY TYPICAL SUPPLY CURRENT (TOTAL) 74ALS240A 4.5ns 15mA 74ALS240A-1 4.5ns 15mA TYPE Ia1 Yb1 ORDERING INFORMATION ORDER CODE DRAWING NUMBER DESCRIPTION COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C 20-pin plastic DIP 74ALS240AN, 74ALS240A-1N SOT146-1 20-pin plastic SOL 74ALS240AD, 74ALS240A-1D SOT163-1 20-pin plastic SSOP Type II 74ALS240ADB, 74ALS240A-1DB SOT339-1 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS DESCRIPTION Ian, Ibn 74ALS (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW Data inputs 1.0/1.0 20µA/0.1mA OEa, OEb Output Enable inputs (active-Low) 1.0/1.0 20µA/0.1mA Yan, Ybn Data outputs 750/240 15mA/24mA Yan, Ybn Data outputs (-1 version) 750/480 15mA/48mA 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 2 4 6 8 17 15 13 1 11 19 Ia0 1 19 Ia1 Ia2 Ia3 Ib0 Ib1 Ib2 Ib3 2 OEa 18 1991 Feb 08 EN2 2D 1 16 14 12 3 5 7 16 6 14 8 12 17 9 SF00321 18 4 OEb Ya0 Ya1 Ya2 Ya3 Yb0 Yb1 Yb2 Yb3 VCC = Pin 20 GND = Pin 10 EN1 2 3 15 5 13 7 11 9 SF00322 2 853–1244 01670 Philips Semiconductors Product specification 74ALS240A/ 74ALS240A-1 Octal inverter buffer (3-State) LOGIC DIAGRAM Ia0 Ia1 Ia2 Ia3 OEa 2 FUNCTION TABLE 18 4 16 6 14 8 12 Ya0 Ib0 Ya1 Ib1 Ib2 Ya2 Ib3 Ya3 1 OEb 17 INPUTS 3 15 5 13 7 11 Yb0 OEb Ib Ya Yb L L L L H H L H L H L L X H X Z Z H Yb2 9 Yb3 10 VCC = Pin 20 GND = Pin 10 Ia Yb1 H L X Z OUTPUTS OEa = = = = High voltage level Low voltage level Don’t care High impedance “off” state SF00323 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 IOUT O Current applied to output in Low output state Tamb Operating free-air temperature range Tstg Storage temperature range –0.5 to VCC V All versions 48 mA -1 version 96 mA 0 to +70 °C –65 to +150 °C RECOMMENDED OPERATING CONDITIONS LIMITS PARAMETER SYMBOL 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 –15 mA 24 mA All versions IOL O Tamb Low level output current Low-level -1 version Operating free-air temperature range NOTE: 1. The 48mA limit applies only under the condition of VCC = 5.0V ±5%. 1991 Feb 08 3 V 1 mA +70 °C 48 0 V Philips Semiconductors Product specification 74ALS240A/ 74ALS240A-1 Octal inverter buffer (3-State) DC ELECTRICAL CHARACTERISTICS (Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL VOH TEST CONDITIONS1 PARAMETER VCC±10%,, VIL = MAX,, VIH = MIN High-level High level out output ut voltage VCC = MIN, VIL = MAX, VIH = MIN All versions VOL Low-level Low level out output ut voltage -1 version VIK VCC = MIN,, VIL = MAX,, VIH = MIN VCC = 4.75V, VIL = MAX, VIH = MIN LIMITS MIN IOH = –0.4mA VCC – 2 IOH = –3mA 2.4 IOH = –15mA 2.0 TYP2 MAX UNIT V 3.2 V IOL = 12mA 0.25 0.40 V IOL = 24mA 0.35 0.50 V IOL = 48mA 0.35 0.50 V –0.73 Input clamp voltage VCC = MIN, II = IIK –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 Output current3 VCC = MAX, VO = 2.25V –112 mA 2.5 11 mA 19.5 23 mA 23 30 IO –30 ICCH ICC Supply current (total) ICCL VCC = MAX ICCZ 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 2.0 2.0 9.0 9.0 ns tPZH tPZL Output Enable time to High or Low level Waveform 2 Waveform 3 2.0 3.0 10.0 12.0 ns tPHZ tPLZ Output disable time from High or Low level Waveform 2 Waveform 3 2.0 3.0 10.0 12.0 ns 1991 Feb 08 4 Philips Semiconductors Product specification 74ALS240A/ 74ALS240A-1 Octal inverter buffer (3-State) AC WAVEFORMS For all waveforms, VM = 1.3V. Ian, Ibn VM VM tPHL tPLH VM Yn VM SF00328 Waveform 1. Propagation Delay for Non-Inverting Output VM OEn tPZH Yn VM OEn VM tPHZ VM tPZL VOH –0.3V tPLZ 3.5V VM Yn VM 0V VOL +0.3V SC00077 SC00078 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 Octal inverter buffer (3–State) 74ALS240A/74ALS240A–1 DIP20: plastic dual in-line package; 20 leads (300 mil) 1991 Feb 08 6 SOT146-1 Philips Semiconductors Product specification Octal inverter buffer (3–State) 74ALS240A/74ALS240A–1 SO20: plastic small outline package; 20 leads; body width 7.5 mm 1991 Feb 08 7 SOT163-1 Philips Semiconductors Product specification Octal inverter buffer (3–State) 74ALS240A/74ALS240A–1 SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm 1991 Feb 08 8 SOT339-1 Philips Semiconductors Product specification Octal inverter buffer (3–State) 74ALS240A/74ALS240A–1 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