54AC520,54ACT520 54AC520 * 54ACT520 8-Bit Identity Comparator Literature Number: SNOS057A 54AC520 * 54ACT520 8-Bit Identity Comparator General Description The 'AC/'ACT520 are expandable 8-bit comparators. They compare two words of up to eight bits each and provide a LOW output when the two words match bit for bit. The expansion input IA = B also serves as an active LOW enable input. n n n n n Expandable to any word length 20-pin package Outputs source/sink 24 mA 'ACT520 has TTL-compatible inputs Standard Microcircuit Drawing (SMD) 54AC520: 5962-90916 54ACT520: 5962-89793 Features n Compares two 8-bit words in 6.5 ns typ Logic Symbols IEEE/IEC DS100234-1 DS100234-4 Pin Names Description A0-A7 Word A Inputs B0-B7 Word B Inputs TA = B Expansion or Enable Input OA = B Identity Output FACTTM is a trademark of Fairchild Semiconductor Corporation. (c) 2001 National Semiconductor Corporation DS100234 www.national.com 54AC520 * 54ACT520 8-Bit Identity Comparator September 1998 54AC520 * 54ACT520 Connection Diagrams Pin Assignment for DIP and Flatpak Pin Assignment for LCC DS100234-3 DS100234-2 Inputs IA = B L L H H A, B Outputs OA = B A = B* AB H A = B* AB H L H H = HIGH Voltage Level L = LOW Voltage Level *A0 = B0, A1 = B1, A2 = B2, etc. www.national.com 2 54AC520 * 54ACT520 Logic Diagram DS100234-5 Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. 3 www.national.com 54AC520 * 54ACT520 Absolute Maximum Ratings (Note 1) Recommended Operating Conditions If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (VCC) DC Input Diode Current (IIK) VI = -0.5V VI = VCC + 0.5V DC Input Voltage (VI) DC Output Diode Current (IOK) VO = -0.5V VO = VCC + 0.5V DC Output Voltage (VO) DC Output Source or Sink Current (IO) DC VCC or Ground Current per Output Pin (ICC or IGND) Storage Temperature (TSTG) Junction Temperature (TJ) CDIP Supply Voltage (VCC) 'AC 'ACT Input Voltage (VI) Output Voltage (VO) Operating Temperature (TA) 54AC/ACT Minimum Input Edge Rate (V/t) 'AC Devices VIN from 30% to 70% of VCC VCC @ 3.3V, 4.5V, 5.5V Minimum Input Edge Rate (V/t) 'ACT Devices VIN from 0.8V to 2.0V VCC @ 4.5V, 5.5V -0.5V to +7.0V -20 mA +20 mA -0.5V to VCC + 0.5V -20 mA +20 mA -0.5V to VCC + 0.5V 50 mA 50 mA -65C to +150C 2.0V to 6.0V 4.5V to 5.5V 0V to VCC 0V to VCC -55C to +125C 125 mV/ns 125 mV/ns Note 1: Absolute maximum ratings are those values beyond which damage to the device may occur. The databook specifications should be met, without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input loading variables. National does not recommend operation of FACTTM circuits outside databook specifications. 175C DC Characteristics for 'AC Family Devices 54AC Symbol Parameter VCC (V) TA = Units Conditions -55C to +125C Guaranteed Limits VIH Minimum High Level Input Voltage VIL VOH 3.0 2.1 4.5 3.15 5.5 3.85 Maximum Low Level 3.0 0.9 Input Voltage 4.5 1.35 5.5 1.65 Minimum High Level 3.0 2.9 Output Voltage 4.5 4.4 5.5 5.4 VOUT = 0.1V V or VCC - 0.1V VOUT = 0.1V V or VCC - 0.1V IOUT = -50 A V (Note 2) VIN = VILor VIH VOL Maximum Low Level Output Voltage 3.0 2.4 4.5 3.7 IOH = -12 mA V IOH = -24 mA 5.5 4.7 IOH = -24 mA 3.0 0.1 IOUT = 50 A 4.5 0.1 5.5 0.1 V (Note 2) VIN = VILor VIH IIN Maximum Input 3.0 0.50 4.5 0.50 IOL = 12 mA 5.5 0.50 5.5 1.0 A VI = VCC, GND 5.5 20.0 A VI = VCC V IOL = 24 mA Leakage Current IIH Maximum Input A Inputs Only High Leakage Current www.national.com IOL = 24 mA B Inputs Only 4 (Continued) 54AC Symbol Parameter VCC TA = (V) -55C to +125C Units Conditions Guaranteed Limits IIL Maximum Input 5.5 -1.5 mA VI = VCC Low Leakage Current B Inputs Only IOLD Minimum Dynamic (Note 3) 5.5 50 mA VOLD = 1.65V Max IOHD Output Current 5.5 -50 mA VOHD = 3.85V Min ICC Maximum Quiescent 5.5 80.0 A VIN = VCC 5.5 8.0 mA VIN = GND Supply Current ICC Maximum Quiescent Supply Current Note 2: All outputs loaded; thresholds on input associated with output under test. Note 3: Maximum test duration 2.0 ms, one output loaded at a time. DC Characteristics for 'ACT Family Devices 54ACT Symbol Parameter VCC TA = (V) -55C to +125C Units Conditions Guaranteed Limits VIH VIL VOH Minimum High Level 4.5 2.0 Input Voltage 5.5 2.0 Maximum Low Level 4.5 0.8 Input Voltage 5.5 0.8 Minimum High Level 4.5 4.4 Output Voltage 5.5 5.4 V VOUT = 0.1V or VCC - 0.1V V VOUT = 0.1V V IOUT = -50 A or VCC - 0.1V (Note 4) VIN = VILor VIH VOL 4.5 3.70 5.5 4.70 Maximum Low Level 4.5 0.1 Output Voltage 5.5 0.1 V IOH = -24 mA V IOUT = 50 A IOH = -24 mA (Note 4) VIN = VILor VIH IIN Maximum Input 4.5 0.50 5.5 0.50 V IOL = 24 mA 5.5 1.0 A VI = VCC, GND 5.5 10.0 A VI = VCC 5.5 -1.0 mA VI = VCC 5.5 1.6 mA VI = VCC - 2.1V 5.5 50 mA VOLD = 1.65V Max IOL = 24 mA Leakage Current IIH Maximum Input High Leakage Current IIL Maximum Input B Inputs Only Low Leakage Current B Inputs Only ICCT Maximum IOLD Minimum Dynamic (Note 5) IOHD Output Current 5.5 -50 mA VOHD = 3.85V Min ICC Maximum Quiescent 5.5 80.0 A VIN = VCC ICC/Input Supply Current or GND 5 www.national.com 54AC520 * 54ACT520 DC Characteristics for 'AC Family Devices 54AC520 * 54ACT520 DC Characteristics for 'ACT Family Devices (Continued) 54ACT Symbol Parameter VCC TA = (V) -55C to +125C Units Conditions Guaranteed Limits ICC Maximum Quiescent 5.5 8.0 mA VIN = GND Supply Current Note 4: All outputs loaded; thresholds on input associated with output under test. Note 5: Maximum test duration 2.0 ms, one output loaded at a time. AC Electrical Characteristics 54AC Symbol tPLH tPHL Parameter tPHL TA = -55C (V) to +125C (Note 6) CL = 50 pF Fig. Units Min Max Propagation Delay 3.3 1.0 14.0 An or Bn to OA = B 5.0 1.5 10.5 Propagation Delay 3.3 1.0 15.0 An or Bn to OA tPLH VCC = B 5.0 1.5 11.0 Propagation Delay 3.3 1.0 10.0 IA 5.0 1.5 7.5 Propagation Delay 3.3 1.0 10.5 IA 5.0 1.5 8.0 = B to OA = B to OA = B = B No. ns ns ns ns Note 6: Voltage Range 3.3 is 3.3V 0.3V Voltage Range 5.0 is 5.0V 0.5V AC Electrical Characteristics 54ACT VCC Symbol tPLH Parameter Propagation Delay An or Bn to OA tPHL tPLH tPHL = B to OA = B to OA Min Max 5.0 1.5 12.0 ns 5.0 1.5 12.0 ns 5.0 1.5 8.5 ns 5.0 1.5 9.0 ns = B Note 7: Voltage Range 5.0 is 5.0V 0.5V Capacitance Symbol Typ Units CIN Input Capacitance 4.5 pF VCC = OPEN CPD Power Dissipation Capacitance 40 pF VCC = 5.0V www.national.com Units = B Propagation Delay IA to +125C CL = 50 pF = B Propagation Delay IA (V) (Note 7) Fig. = B Propagation Delay An or Bn to OA TA = -55C Parameter 6 Conditions No. 54AC520 * 54ACT520 Applications Ripple Expansion DS100234-6 Parallel Expansion DS100234-7 7 www.national.com 54AC520 * 54ACT520 Physical Dimensions inches (millimeters) unless otherwise noted 20 Terminal Ceramic Leadless Chip Carrier (L) NS Package Number E20A 20 Lead Ceramic Dual-In-Line Package (D) NS Package Number J20A www.national.com 8 54AC520 * 54ACT520 8-Bit Identity Comparator Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20 Lead Ceramic Flatpak (F) NS Package Number W20A LIFE SUPPORT POLICY NATIONAL'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. National Semiconductor Corporation Americas Email: support@nsc.com www.national.com National Semiconductor Europe Fax: +49 (0) 180-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Francais Tel: +33 (0) 1 41 91 8790 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: ap.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI. Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. Information of third parties may be subject to additional restrictions. Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in such safety-critical applications. TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use. TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: Products Applications Audio www.ti.com/audio Communications and Telecom www.ti.com/communications Amplifiers amplifier.ti.com Computers and Peripherals www.ti.com/computers Data Converters dataconverter.ti.com Consumer Electronics www.ti.com/consumer-apps DLP(R) Products www.dlp.com Energy and Lighting www.ti.com/energy DSP dsp.ti.com Industrial www.ti.com/industrial Clocks and Timers www.ti.com/clocks Medical www.ti.com/medical Interface interface.ti.com Security www.ti.com/security Logic logic.ti.com Space, Avionics and Defense www.ti.com/space-avionics-defense Power Mgmt power.ti.com Transportation and Automotive www.ti.com/automotive Microcontrollers microcontroller.ti.com Video and Imaging RFID www.ti-rfid.com OMAP Mobile Processors www.ti.com/omap Wireless Connectivity www.ti.com/wirelessconnectivity TI E2E Community Home Page www.ti.com/video e2e.ti.com Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright (c) 2011, Texas Instruments Incorporated