INTEGRATED CIRCUITS 74F240/74F240A Octal inverter buffer (3-State) 74F241/74F241A Octal buffer (3-State) Product specification IC15 Data Handbook Powered by ICminer.com Electronic-Library Service CopyRight 2003 1991 Jan 02 Philips Semiconductors Product specification 74F240/74F240A/ 74F241/74F241A Buffers FEATURES DESCRIPTION • Octal bus interface • 3-State buffer outputs sink 64mA • 15mA source current • Guaranteed output skew less than 2.0ns The 74F240 and 74F241 are octal buffers that are ideal for driving bus lines of buffer memory address registers. The outputs are all capable of sinking 64mA and sourcing up to 15mA. The device features two output enables, each controlling four of the 3–state outputs. (74F240A/74F241A) • Reduced ground bounce (74F240A/74F241A) The 74F240A and 74F241A are functionally equivalent to their non–A counterparts. They have been designed to reduce effects of ground noise. Other advantages are noted in the features. • Reduced ICC (74F241A only) • Reduced loading (74F240A IIL = 100µA, 74F241A IIL = 40µA) TYPE TYPICAL PROPAGATION DELAY TYPICAL SUPPLY CURRENT (TOTAL) 74F240 4.3ns 37mA 74F240A 3.8ns 40mA 74F241 5.0ns 53mA 74F241A 4.5ns 32mA ORDERING INFORMATION ORDER CODE DESCRIPTION COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C PKG DWG # 20–pin plastic DIP N74F240N, N74F240AN, N74F241N, N74F241AN SOT146-1 20–pin plastic SOL N74F240D, N74F240AD, N74F241D, N74F241AD SOT163-1 20-pin plastic SSOP II N74F240DB SOT339-1 INPUT AND OUTPUT LOADING AND FAN OUT TABLE 74F (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW Data inputs (74F240) 1.0/1.67 20µA/1.0mA Data inputs (74F240A) 1.0/0.167 20µA/100µA Data inputs (74F241) 1.0/2.67 20µA/1.6mA Data inputs (74F241A) 1.0/0.067 20µA/40µA PINS Ian, Ibn OEa, OEb OEa, OEb Yan, Ybn DESCRIPTION Output enable inputs (active low) (74F240) 1.0/0.33 20µA/0.2mA Output enable inputs (active low) (74F240A) 1.0/0.167 20µA/100µA Output enable input (74F241) 1.0/1.67 20µA/1.0mA Output enable input (74F241A) 1.0/0.067 20µA/40µA Data outputs (74F241, 74F241A) 750/106.7 15mA/64mA 750/106.7 15mA/64mA Yan, Ybn Data outputs (74F240, 74F240A) Note to input and output loading and fan out table One (1.0) FAST unit load is defined as: 20µA in the high state and 0.6mA in the low state. January 2, 1991 Powered by ICminer.com Electronic-Library Service CopyRight 2003 2 853–0355 01345 Philips Semiconductors Product specification 74F240/74F240A/ 74F241/74F241A Buffers PIN CONFIGURATION FOR 74F240/74F240A IEC/IEEE SYMBOL FOR 74F240/74F240A OEa 1 20 VCC 1 Ia0 2 19 OEb 19 Yb0 3 18 Ya0 Ia1 4 17 Ib0 2 Yb1 5 16 Ya1 4 16 6 14 8 12 6 Ia2 15 Ib1 Yb2 7 14 Ya2 Ia3 8 13 Ib2 EN1 EN2 2D 17 9 Yb3 5 11 Ib3 13 7 11 9 SF00320 SF00322 LOGIC SYMBOL FOR 74F240/74F240A LOGIC DIAGRAM FOR 74F240/74F240A 2 4 6 8 17 15 13 11 Ia0 Ia0 Ia1 Ia2 Ia3 Ib0 Ib1 Ib2 Ib3 Ia1 OEa Ia2 19 3 2 15 12 Ya3 GND 10 1 18 1 2 18 4 16 6 14 8 12 Ya0 Ib0 Ya1 Ib1 Ya2 Ib2 Ya3 Ib3 17 3 15 5 13 7 11 9 Yb0 Yb1 Yb2 OEb Ya0 Ya1 Ya2 Ya3 Yb0 Yb1 Yb2 Yb3 18 16 14 12 3 5 7 VCC = Pin 20 GND = Pin 10 Ia3 OEa 9 VCC = Pin 20 GND = Pin 10 SF00321 FUNCTION TABLE FOR 74F240/74F240A INPUTS OUTPUTS OEa Ia OEb Ib Ya Yb L L L L H H L H L H L L H X H X Z Z Notes to function table for 74F240/74F240A H = High voltage level L = Low voltage level X = Don’t care Z = High impedance ”off” state January 2, 1991 Powered by ICminer.com Electronic-Library Service CopyRight 2003 3 1 OEb Yb3 10 SF00323 Philips Semiconductors Product specification 74F240/74F240A/ 74F241/74F241A Buffers PIN CONFIGURATION FOR 74F241/74F241A OEa 20 1 VCC 1 19 Ia0 2 19 OEb Yb0 3 18 Ya0 Ia1 4 17 Ib0 Yb1 16 5 IEC/IEEE SYMBOL FOR 74F241/74F241A EN1 EN2 2 2D 18 1 4 16 6 14 8 12 Ya1 Ia2 6 15 Ib1 Yb2 7 14 Ya2 17 Ia3 8 13 Ib2 15 5 Yb3 9 12 Ya3 13 7 GND 10 11 Ib3 11 9 3 2 SF00326 SF00324 LOGIC SYMBOL FOR 74F241/74F241A 2 Ia0 1 OEa 19 OEb 4 6 Ia1 Ia2 8 17 Ia3 Ib0 15 13 11 Ib1 Ib2 Ib3 LOGIC DIAGRAM FOR 74F241/74F241A Ia0 Ia1 Ia2 Ya0 Ya1 Ya2 Ya3 Yb0 Yb1 Yb2 Yb3 18 16 14 12 3 VCC = Pin 20 GND = Pin 10 5 7 Ia3 OEa 9 FUNCTION TABLE FOR 74F241/74F241A OUTPUTS OEa Ia OEb Ib Ya Yb L L H L L L L H H H H H H X L X Z Z Notes to function table for 74F241/74F241A H = High voltage level L = Low voltage level X = Don’t care Z = High impedance ”off” state January 2, 1991 Powered by ICminer.com Electronic-Library Service CopyRight 2003 18 4 16 6 14 8 12 1 VCC = Pin 20 GND = Pin 10 SF00325 INPUTS 2 4 Ya0 Ib0 Ya1 Ib1 Ya2 Ib2 Ya3 Ib3 OEb 17 3 15 5 13 7 11 9 Yb0 Yb1 Yb2 Yb3 10 SF00327 Philips Semiconductors Product specification 74F240/74F240A/ 74F241/74F241A Buffers 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 –30 to +5 mA VOUT Voltage applied to output in high output state –0.5 to VCC V IOUT Current applied to output in low output state 128 mA Tamb Operating free air temperature range 0 to +70 °C Tstg Storage temperature range –65 to +150 °C RECOMMENDED OPERATING CONDITIONS SYMBOL PARAMETER LIMITS UNIT MIN NOM MAX VCC Supply voltage 4.5 5.0 5.5 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 IOL Low–level output current 64 mA Tamb Operating free air temperature range +70 °C January 2, 1991 Powered by ICminer.com Electronic-Library Service CopyRight 2003 0 5 V V Philips Semiconductors Product specification 74F240/74F240A/ 74F241/74F241A Buffers DC ELECTRICAL CHARACTERISTICS (Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL PARAMETER TEST LIMITS CONDITIONS1 VCC = MIN, VOH ±10%VC TYP2 High-level output voltage VIL = MAX, IOH = –15mA VCC = MIN, VIL = MAX, Low-level output voltage IOL = MAX VIH = MIN, 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 2.4 V VCC = MAX, VI = 2.7V ±5%VCC 2.7 ±10%VC 2.0 V 2.0 V 3.4 ±5%VCC ±10%VC 0.50 V 0.42 0.50 V –0.73 -1.2 V 100 µA C ±5%VCC 20 µA –1.0 mA –100 µA –1.0 mA 74F241 Ian, Ibn –1.6 mA 74F241A all inputs –40 µA 74F240A all inputs Low–level input current V C 74F240 all inputs IIL UNIT MAX C VIH = MIN VOL IOH = –3mA MIN 74F241 OEa, OEb VCC = MAX, VI = 0.5V IOZH Off–state output current, high–level voltage applied VCC = MAX, VO = 2.7V 50 µA IOZL Off–state output current, low–level voltage applied VCC = MAX, VO = 0.5V –50 µA IOS Short–circuit output current3 VCC = MAX -225 mA 12 18 mA 50 70 mA 35 45 mA ICCH 28 37 mA ICCL 58 75 mA ICCH 74F240 ICCL ICCZ 74F240A ICC Supply current (total) 74F241 ICCZ 34 50 mA ICCH 40 60 mA ICCL 60 90 mA ICCZ 74F241A VCC = MAX -100 65 90 mA ICCH VCC = MAX 20 30 mA ICCL 49 65 mA ICCZ 26 40 mA Notes to DC electrical characteristics 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. January 2, 1991 Powered by ICminer.com Electronic-Library Service CopyRight 2003 6 Philips Semiconductors Product specification 74F240/74F240A/ 74F241/74F241A Buffers AC ELECTRICAL CHARACTERISTICS LIMITS Tamb = +25°C SYMBOL PARAMETER TEST CONDITION Tamb = 0°C to +70°C VCC = +5.0V CL = 50pF, RL = 500Ω VCC = +5.0V ± 10% CL = 50pF, RL = 500Ω UNIT MIN TYP MAX MIN MAX Waveform 1 3.0 2.0 4.5 3.0 6.5 4.5 3.0 2.0 7.5 5.0 ns Waveform 3 Waveform 4 3.0 4.5 5.0 6.5 7.5 8.5 3.0 4.0 9.0 10.0 ns tPLH tPHL Propagation delay Ian, Ibn to Yn tPZH tPZL Output enable time to high or low level tPHZ tPLZ Output disable time from high or low level Waveform 3 Waveform 4 3.0 3.0 5.5 5.0 7.0 7.0 3.0 3.0 7.5 7.5 ns tPLH tPHL Propagation delay Ian, Ibn to Yn Waveform 1 2.5 2.0 4.0 3.5 5.5 5.5 2.0 2.0 6.5 6.0 ns tPZH tPZL Output enable time to high or low level Waveform 3 Waveform 4 2.0 3.5 4.0 5.0 6.5 7.5 2.0 3.0 7.0 8.5 ns tPHZ tPLZ Output disable time from high or low level Waveform 3 Waveform 4 2.0 1.5 3.5 2.5 6.0 5.0 1.5 1.0 6.5 5.5 ns tsk(0) Output skew1, 2 Waveform 5 2.0 ns tPLH tPHL Propagation delay Ian, Ibn to Yn Waveform 2 2.5 2.5 4.0 4.0 5.2 5.2 2.5 2.5 6.2 6.5 ns tPZH tPZL Output enable time to high or low level Waveform 3 Waveform 4 2.0 2.0 4.0 5.0 5.7 7.0 2.0 2.0 6.7 8.0 ns tPHZ tPLZ Output disable time from high or low level Waveform 3 Waveform 4 2.0 2.0 4.0 4.0 6.0 6.0 2.0 2.0 7.0 7.0 ns tPLH tPHL Propagation delay Ian, Ibn to Yn Waveform 2 2.5 2.5 4.5 4.5 5.8 5.8 2.5 2.5 6.5 6.5 ns tPZH tPZL Output enable time to high or low level Waveform 3 Waveform 4 2.5 3.5 4.5 5.0 6.0 7.0 2.0 3.0 6.7 8.0 ns tPHZ tPLZ Output disable time from high or low level Waveform 3 Waveform 4 2.0 1.5 4.0 3.5 6.0 5.5 1.5 1.0 6.5 6.0 ns 2.0 ns 74F240 74F240A 74F241 74F241A 1.5 tsk(0) Output skew1, 2 Waveform 5 1.5 Notes to AC electrical characteristics 1. | tPN actual – tPM actual| for any output compared to any other output where N and M are either LH or HL. 2. Skew times are valid only under same test conditions (temperature, VCC, loading, etc.,). AC WAVEFORMS Ian, Ibn VM tPHL Yn Ian, Ibn VM Yn VM SF00328 tPHL VM VM SF00329 Waveform 1. Propagation delay for inverting outputs January 2, 1991 Powered by ICminer.com Electronic-Library Service CopyRight 2003 VM tPLH tPLH VM VM Waveform 2. Propagation delay for non–invertIng outputs 7 Philips Semiconductors Product specification 74F240/74F240A/ 74F241/74F241A Buffers OEn Yn, Yn VM VM tPZH tPHZ VM OEb Yn, Yn VOH -0.3V tsk(0) VM Yn, Yn 0V VM SF00332 SF00330 Waveform 3. 3-state output enable time to high level and output disable time from high level Waveform 5. Output skew Notes to AC waveforms 1. For all waveforms, VM = 1.5V. 2. The shaded areas indicate when the input is permitted to change for predictable output performance. OEn VM VM OEb tPZL tPLZ 3.5V VM Yn, Yn VOL +0.3V SF00331 Waveform 4. 3-state output enable time to low level and output disable time from low level TEST CIRCUIT AND WAVEFORMS VCC 7.0V VIN RL VOUT PULSE GENERATOR tw 90% NEGATIVE PULSE VM CL AMP (V) VM 10% D.U.T. RT 90% 10% tTHL (tf ) tTLH (tr ) tTLH (tr ) tTHL (tf ) 0V RL AMP (V) 90% 90% Test Circuit for Open Collector Outputs POSITIVE PULSE VM VM 10% TEST tPLZ tPZL All other SWITCH closed closed open 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. 10% tw SWITCH POSITION 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 SF00128 January 2, 1991 Powered by ICminer.com Electronic-Library Service CopyRight 2003 8 Philips Semiconductors Product specification 74F240/74F240A 74F241/74F241A Buffers DIP20: plastic dual in-line package; 20 leads (300 mil) 1991 Jan 02Electronic-Library Service CopyRight 2003 Powered by ICminer.com 9 SOT146-1 Philips Semiconductors Product specification 74F240/74F240A 74F241/74F241A Buffers SO20: plastic small outline package; 20 leads; body width 7.5 mm 1991 Jan 02Electronic-Library Service CopyRight 2003 Powered by ICminer.com 10 SOT163-1 Philips Semiconductors Product specification 74F240/74F240A 74F241/74F241A Buffers SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm 1991 Jan 02Electronic-Library Service CopyRight 2003 Powered by ICminer.com 11 SOT339-1 Philips Semiconductors Product specification 74F240/74F240A 74F241/74F241A Buffers 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 Powered by ICminer.com Electronic-Library Service CopyRight 2003 12 Date of release: 10-98 9397-750-05101