74ABT16952

74ABT16952 16-Bit Registered Transceiver with TRI-STATE Outputs September 1996 74ABT16952 16-Bit Registered Transceiver with TRI-STATE Outputs General Description The ’ABT16952 is a 16-bit registered transceiver Two 8-bit back to back registers store data flowing in both directions between two bidirectional buses Separate clock clock enable and TRI-STATE output enable signals are provided for each register The output pins are guaranteed to source 32 mA (24 mA mil ) and to sink 64 mA (48 mA mil) Features Y Y Y Y Y Separate clock clock enable and TRI-STATE output enable provided for each register A and B output sink capability of 64 mA source capability of 32 mA Guaranteed latchup protection High impedance glitch free bus loading during entire power up and power down cycle Nondestructive hot insertion capability Commercial 74ABT16952CSSC (Note 1) 74ABT16952CMTD (Notes 1 2) Package Number MS56A MTD56 Package Description 56-Lead (0 300 Wide) Molded Shrink Small Outline JEDEC (SSOP) 56-Lead Molded Thin Shrink Small Outline JEDEC (TSSOP) Note 1 Devices also available in 13 reel Use suffix e SSCX and MTDX Note 2 Contact factory for package availability Pin Descriptions Pin Names A0 – A16 B0 – B16 CPABn CPBAn CEAn CEBn OEABn OEBAn Description Data Register A Inputs B-Register TRI-STATE Outputs Data Register B Inputs A-Register TRI-STATE Outputs Clock Pulse Inputs Clock Enable Output Enable Inputs Connection Diagram Pin Assignment for SSOP TL F 11647 – 1 TRI-STATE is a registered trademark of National Semiconductor Corporation C1996 National Semiconductor Corporation TL F 11647 RRD-B30M96 Printed in U S A http www national com Pin Descriptions (Continued) Output Control OE H L L Internal Q X L H Output Z L H Z L NC Register Function Table (Applies to A or B Register) Function D Disable Outputs Enable Outputs X L H Inputs CP X L L CE H L L Internal Q NC L H Function Hold Data Load Data H e HIGH Voltage Level L e LOW Voltage Level X e Immaterial e HIGH Impedance e LOW-to-HIGH Transition e No Change Block Diagram TL F 11647 – 2 n for either byte 1 or byte 2 http www national com 2 Absolute Maximum Ratings (Note 1) Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias Plastic VCC Pin Potential to Ground Pin Input Voltage (Note 2) Input Current (Note 2) Voltage Applied to Any Output in the Disable or Power-Off State in the HIGH State b 65 C to a 150 C b 55 C to a 125 C b 55 C to a 150 C b 0 5V to a 7 0V b 0 5V to a 7 0V b 30 mA to a 5 0 mA b 0 5V to a 5 5V b 0 5V to VCC Current Applied to Output in LOW State (Max) DC Latchup Source Current Over Voltage Latchup (I O) twice the rated IOL (mA) b 500 mA 10V Recommended Operating Conditions Free Air Ambient Temperature Commercial Supply Voltage Commercial Minimum Input Edge Rate Data Input Enable Input Clock Input b 40 C to a 85 C a 4 5V to a 5 5V Note 1 Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired Functional operation under these conditions is not implied Note 2 Either voltage limit or current limit is sufficient to protect inputs (DV Dt) 50 mV ns 20 mV ns 100 mV ns DC Electrical Characteristics Symbol VIH VIL VCD VOH VOL VID IIH IBVI IBVIT IIL IIH a IOZH IIL a IOZL IOS ICEX IZZ ICCH ICCL ICCZ ICCT Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage Output LOW Voltage Input Leakage Test Input HIGH Current Input HIGH Current Breakdown Test Input HIGH Current Breakdown Test (I O) Input LOW Current Output Leakage Current Output Leakage Current Output Short-Circuit Current Output HIGH Leakage Current Bus Drainage Test Power Supply Current Power Supply Current Power Supply Current Additional ICC Input b 100 ABT16952 Min 20 08 b1 2 Typ Max Units V V V VCC Conditions Recognized HIGH Signal Recognized LOW Signal Min IIN e b18 mA (Non I O Pins) IOH e b3 mA (An Bn) IOH e b32 mA (An Bn) 74ABT 74ABT 74ABT 25 20 0 55 4 75 5 7 100 b5 IOL e 64 mA (An Bn) V mA mA mA mA mA mA mA mA mA mA mA mA mA 00 Max Max Max Max 0V – 5 5V 0V – 5 5V Max Max 0 0V Max Max Max Max IID e 1 9 mA (Non-I O Pins) All Other Pins Grounded VIN e 2 7V (Non-I O Pins) (Note 2) VIN e VCC (Non-I O Pins) VIN e 7 0V (Non-I O Pins) VIN e 5 5V (An Bn) VIN e 0 5V (Non-I O Pins) (Note 2) VIN e 0 0V (Non-I O Pins) VOUT e 2 7V (An Bn) OEA or OEB e 2 0V VOUT e 0 5V (An Bn) OEA or OEB e 2 0V VOUT e 0V (An Bn) VOUT e VCC (An Bn) VOUT e 5 5V (An Bn) All Others GND All Outputs HIGH All Outputs LOW Outputs TRI-STATE All Others GND VI e VCC b 2 1V All Others at VCC or GND 50 b 50 b 275 50 100 10 60 10 25 3 http www national com DC Electrical Characteristics Symbol ICCD Parameter Dynamic ICC (Note 2) No Load Min (Continued) ABT16952 Typ Max 0 18 Units VCC Conditions Outputs Open OEA or OEB e GND Non-I O e GND or VCC One Bit toggling 50% duty cycle (Note 1) mA MHz Max Note 1 For 8-bit toggling ICCD k 1 4 mA MHz Note 2 Guaranteed but not tested AC Electrical Characteristics 74ABT Symbol Parameter Min fmax tPLH tPHL tPZH tPZL tPHZ tPLZ Max Clock Frequency Propagation Delay CPABn or CPBAn to An or Bn Output Enable Time OEABn or OEBAn to An or Bn Output Disable Time OEABn or OEBAn to An or Bn 200 15 15 15 15 15 15 53 53 55 55 60 60 TA e a 25 C VCC e a 5 0V CL e 50 pF Max 74ABT TA e b40 C to a 85 C VCC e 4 5V to 5 5V CL e 50 pF Min 200 15 15 15 15 15 15 53 53 55 55 60 60 Max MHz ns Units ns ns AC Operating Requirements 74ABT Symbol Parameter TA e a 25 C VCC e a 5 0V CL e 50 pF Min ts(H) ts(L) th(H) th(L) ts(H) ts(L) th(H) th(L) tw(H) tw(L) Setup Time HIGH or LOW An or Bn to CPABn or CPBAn Hold Time HIGH or LOW An or Bn to CPABn or CPBAn Setup Time HIGH or LOW CEAn or CEBn to CPABn or CPBAn Hold Time HIGH or LOW CEAn or CEBn to CPABn or CPBAn Pulse Width HIGH or LOW to CPABn or CPBAn 25 25 15 15 25 25 15 15 30 30 Max 74ABT TA e b40 C to a 85 C VCC e 4 5V to 5 5V CL e 50 pF Min 25 25 15 15 25 25 15 15 30 30 Max ns Units ns ns ns ns http www national com 4 Capacitance Symbol CIN CI O (Note 1) Parameter Input Capacitance Output Capacitance Typ 5 11 Units pF pF Conditions TA e 25 C VCC e 0V (Non I O Pins) VCC e 5 0V (An Bn) Note 1 CI O is measured at frequency f e 1 MHz per MIL-STD-883B Method 3012 AC Loading TL F 11647 – 3 Includes jig and probe capacitance TL F 11647 – 4 FIGURE 1 Standard AC Test Load FIGURE 2a Test Input Signal Levels Amplitude 3 0V Rep Rate 1 MHz tW 500 ns tr 2 5 ns tf 2 5 ns FIGURE 2b Input Signal Requirements TL F 11647 – 5 FIGURE 3 Propagation Delay Waveforms for Inverting and Non-Inveting Functions TL F 11647 – 6 FIGURE 4 Propagation Delay Pulse Width Waveforms 5 http www national com AC Loading (Continued) TL F 11647–7 FIGURE 5 TRI-STATE Output HIGH and LOW Enable and Disable Times FIGURE 6 Setup Time Hold Time and Recovery Time Waveforms TL F 11647 – 8 Ordering Information The device number is used to form part of a simplified purchasing code where the package type and temperature range are defined as follows TL F 11647 – 9 http www national com 6 Physical Dimensions inches (millimeters) unless otherwise noted 56-Lead SSOP (0 300 Wide) (SS) 74ABT16952CSSC or 74ABT16952CSSCX NS Package Number MS56A 7 http www national com 74ABT16952 16-Bit Registered Transceiver with TRI-STATE Outputs Physical Dimensions millimeters (Continued) 56-Lead Molded Thin Shrink Small Outline Package JEDEC 74ABT16952CMTD NS Package Number MTD56 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 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 1111 West Bardin Road Arlington TX 76017 Tel 1(800) 272-9959 Fax 1(800) 737-7018 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 http www national com National Semiconductor Europe Fax a49 (0) 180-530 85 86 Email europe support nsc com Deutsch Tel a49 (0) 180-530 85 85 English Tel a49 (0) 180-532 78 32 Fran ais Tel a49 (0) 180-532 93 58 Italiano Tel a49 (0) 180-534 16 80 National Semiconductor Hong Kong Ltd 13th Floor Straight Block Ocean Centre 5 Canton Rd Tsimshatsui Kowloon Hong Kong Tel (852) 2737-1600 Fax (852) 2736-9960 National Semiconductor Japan Ltd Tel 81-043-299-2308 Fax 81-043-299-2408 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