INTEGRATED CIRCUITS 74F138 1-of-8 decoder/demultiplexer Product specification IC15 Data Handbook 1991 Feb 14 Philips Semiconductors Product specification 1-of-8 decoder/demultiplexer 74F138 FEATURE PIN CONFIGURATION • Demultiplexing capability • Multiple input enable for easy expansion • Ideal for memory chip select decoding • Industrial temperature range available (–40°C to +85°C) 1 16 VCC 2 15 Q0 A2 3 14 Q1 E0 4 13 Q2 E1 5 12 Q3 E2 6 11 Q4 Q7 7 10 Q5 GND 8 9 Q6 DESCRIPTION The 74F138 decoder accepts three binary weighted inputs (A0, A1, A2) and when enabled, provides eight mutually exclusive, active low outputs (Q0 – Q7). The device features three enable inputs; two active low (E0, E1) and one active high (E2). Every output will be high unless E0 and E1 are low and E2 is high. This multiple enable function allows easy parallel expansion of the device to 1-of-32 (5 lines to 32 lines) decoder with just four 74F138s and one inverter (see Figure 1). The device can be used as an eight output demultiplexer by using one of the active low enable inputs as the data input and the remaining enable inputs as strobes. Enable inputs not used must be permanently tied to their appropriate active high or active low state. A0 A1 SF00174 TYPE TYPICAL PROPAGATION DELAY TYPICAL SUPPLY CURRENT (TOTAL) 74F138 5.8ns 13mA ORDERING INFORMATION ORDER CODE DESCRIPTION COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C INDUSTRIAL RANGE VCC = 5V ±10%, Tamb = –40°C to +85°C PKG DWG # 16-pin plastic DIP N74F138N I74F138N SOT38-4 16-pin plastic SO N74F138D I74F138D SOT109-1 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE 74F (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW A0 – A2 PINS Address inputs DESCRIPTION 1.0/1.0 20µA/0.6mA E0, E1 Enable inputs (active Low) 1.0/1.0 20µA/0.6mA E2 Enable input (active High) 1.0/1.0 20µA/0.6mA Data outputs 50/33 1.0mA/20mA Q0 – Q7 NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state. LOGIC SYMBOL IEC/IEEE SYMBOL 1 2 3 DMUX 1 2 G A0 A1 A2 4 E0 5 E1 6 E2 15 0 0 3 0 3 1 2 2 3 14 13 12 11 4 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 4 5 15 14 13 12 11 10 9 7 6 & 5 6 7 10 9 7 VCC = Pin 16 GND = Pin 8 SF00175 February 14, 1991 SF00176 2 853–0343 01719 Philips Semiconductors Product specification 1-of-8 decoder/demultiplexer 74F138 LOGIC DIAGRAM A2 A1 A0 E0 E1 E2 3 2 1 4 5 6 15 14 13 12 11 10 9 Q1 Q2 Q3 Q4 Q5 Q6 Q0 VCC = Pin 16 GND = Pin 8 7 Q7 SF00177 FUNCTION TABLE INPUTS E0 OUTPUTS E1 E2 A0 A1 A2 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 H X X X X X H H H H H H H H X H X X X X H H H H H H H H X X L X X X H H H H H H H H L L H L L L L H H H H H H H L L H H L L H L H H H H H H L L H L H L H H L H H H H H L L H H H L H H H L H H H H L L H L L H H H H H L H H H L L H H L H H H H H H L H H L L H L H H H H H H H H L H L L H H H H H H H H H H H L NOTES: H = High voltage level L = Low voltage level X = Don’t care APPLICATION A0 A1 A2 A3 A4 74F04 H E2 E1 E0 A0 A1 A2 74F138 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 E2 E1 E0 A0 A1 A2 E2 E1 74F138 E0 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 A0 A1 A2 74F138 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q0 E2 E1 E0 A0 A1 A2 74F138 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q31 SF00178 Figure 1. Expansion of 1-of-8 Decoding February 14, 1991 3 Philips Semiconductors Product specification 1-of-8 decoder/demultiplexer 74F138 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.) SYMBOL PARAMETER RATING UNIT VCC Supply voltage –0.5 to +7.0 V VIN Input voltage –0.5 to +7.0 V IIN Input current VOUT Voltage applied to output in High output state IOUT Current applied to output in Low output state Tamb Operating free-air free air temperature range Tstg Storage temperature range –30 to +5 mA –0.5 to VCC V 40 mA Commercial range 0 to +70 °C Industrial range –40 to +85 °C –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 –1 mA IOL Low-level output current Tambb Operating O erating free-air tem temperature erature range V V 20 mA Commercial range 0 +70 °C Industrial range –40 +85 °C DC ELECTRICAL CHARACTERISTICS (Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL LIMITS TEST CONDITIONS1 PARAMETER VCC = MIN,, VIL = MAX,, VIH = MIN IOH O = MAX VCC = MIN,, VIL = MAX,, VIH = MIN IOL O = MAX MIN ±10%VCC 2.5 ±5%VCC 2.7 TYP2 MAX UNIT V VOH O High level output voltage High-level VOL O Low level output voltage Low-level VIK Input clamp voltage VCC = MIN, II = IIK II Input current at maximum input voltage VCC = MAX, VI = 7.0V IIH High-level input current VCC = MAX, VI = 2.7V 20 µA IIL Low-level input current VCC = MAX, VI = 0.5V –0.6 mA IOS Short-circuit output current3 VCC = MAX –150 mA 20 mA ICC Supply current4 (total) 3.4 ±10%VCC 0.30 0.50 V ±5%VCC 0.30 0.50 V –0.73 –1.2 V 100 µA –60 VCC = MAX V 13 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. Not more than one output should be shorted at a time. For testing IOS, the use of high-speed test apparatus and/or sample-and-hold techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting of a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any sequence of parameter tests, IOS tests should be performed last. 4. Measure ICC, outputs must be open, VIN on all inputs = 4.5V. February 14, 1991 4 Philips Semiconductors Product specification 1-of-8 decoder/demultiplexer 74F138 AC ELECTRICAL CHARACTERISTICS LIMITS SYMBOL TEST CONDITION PARAMETER VCC = +5.0V ± 10% Tamb = 0°C to +70°C CL = 50pF RL = 500Ω VCC = +5.0V Tamb = +25°C CL = 50pF RL = 500Ω VCC = +5.0V ± 10% Tamb = –40°C to +85°C CL = 50pF RL = 500Ω MIN TYP MAX MIN MAX MIN MAX UNIT tPLH tPHL Propagation delay An to Qn Waveform 1, 2 3.5 4.0 5.6 6.1 7.0 8.0 3.5 4.0 8.0 9.0 3.0 3.5 8.5 9.0 ns tPLH tPHL Propagation delay E0 or E1 to Qn Waveform 2 3.5 3.0 6.4 5.3 7.0 7.0 3.5 3.0 8.0 7.5 3.0 3.0 8.0 7.5 ns tPLH tPHL Propagation delay E2 to Qn Waveform 1 4.0 3.5 6.2 5.6 8.0 7.5 4.0 3.5 9.0 8.5 4.0 3.5 9.5 8.5 ns AC WAVEFORMS For all waveforms, VM = 1.5V An, E2 VM tPHL tPLH VM Qn VM An, E0, E1 VM VM tPHL VM tPLH VM Qn VM SF00179 SF00180 Waveform 1. Propagation Delay for Inverting Outputs Waveform 2. Propagation Delay for Non-Inverting Outputs TEST CIRCUIT AND WAVEFORMS VCC VIN tw 90% NEGATIVE PULSE VM D.U.T. RT CL RL AMP (V) VM 10% VOUT PULSE GENERATOR 90% 10% tTHL (tf ) tTLH (tr ) tTLH (tr ) tTHL (tf ) 0V AMP (V) 90% 90% POSITIVE PULSE Test Circuit for Totem-Pole Outputs 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. VM VM 10% 10% tw 0V Input Pulse Definition INPUT PULSE REQUIREMENTS family amplitude VM 74F 3.0V 1.5V rep. rate tw tTLH tTHL 1MHz 500ns 2.5ns 2.5ns SF00006 February 14, 1991 5 Philips Semiconductors Product specification 1-of-8 decoder/demultiplexer 74F138 DIP16: plastic dual in-line package; 16 leads (300 mil) 1991 Feb 14 6 SOT38-4 Philips Semiconductors Product specification 1-of-8 decoder/demultiplexer 74F138 SO16: plastic small outline package; 16 leads; body width 3.9 mm 1991 Feb 14 7 SOT109-1 Philips Semiconductors Product specification 1-of-8 decoder/demultiplexer 74F138 Data sheet status Data sheet status Product status Definition [1] Objective specification Development This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice. Preliminary specification Qualification This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make chages at any time without notice in order to improve design and supply the best possible product. Product specification 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. [1] Please consult the most recently issued datasheet before initiating or completing a design. Definitions Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Disclaimers Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes — Philips Semiconductors reserves 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. Copyright Philips Electronics North America Corporation 1998 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 print code Document order number: yyyy mmm dd 8 Date of release: 10-98 9397-750-05076