74F545

54F 74F545 Octal Bidirectional Transceiver with TRI-STATE Outputs May 1995 54F 74F545 Octal Bidirectional Transceiver with TRI-STATE Outputs General Description The ’F545 is an 8-bit TRI-STATE high-speed transceiver It provides bidirectional drive for bus-oriented microprocessor and digital communications systems Straight through bidirectional transceivers are featured with 24 mA (20 mA Mil) bus drive capability on the A ports and 64 mA (48 mA Mil) bus drive capability on the B ports One input Transmit Receive (T R) determines the direction of logic signals through the bidirectional transceiver Transmit enables data from A ports to B ports Receive enables data from B ports to A ports The Output Enable input disables both A and B ports by placing them in a TRI-STATE condition Features Y Y Y Y Y Y Y Higher drive than 8304 8-bit bidirectional data flow reduces system package count TRI-STATE inputs outputs for interfacing with bus-oriented systems 24 mA (20 mA Mil) and 64 mA (48 mA Mil) bus drive capability on A and B ports respectively Transmit Receive and Output Enable simplify control logic Guaranteed 4000V minimum ESD protection Pin for Pin compatible with Intel 8286 Commercial 74F545PC Military Package Number N20A Package Description 20-Lead (0 300 Wide) Molded Dual-In-Line 20-Lead Ceramic Dual-In-Line 20-Lead (0 300 Wide) Molded Small Outline JEDEC 20-Lead (0 300 Wide) Molded Small Outline EIAJ 20-Lead Cerpack 20-Lead Ceramic Leadless Chip Carrier Type C 54F545DM (Note 2) 74F545SC (Note 1) 74F545SJ (Note 1) 54F545FM (Note 2) 54F545LM (Note 2) Note 1 Devices also available in 13 J20A M20B M20D W20A E20A reel Use suffix e SCX and SJX Note 2 Military grade device with environmental and burn-in processing Use suffix e DMQB FMQB and LMQB Logic Symbols TL F 9556 – 3 IEEE IEC TL F 9556 – 5 TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation TL F 9556 RRD-B30M105 Printed in U S A Connection Diagrams Pin Assignment for DIP SOIC and Flatpak Pin Assignment for LCC TL F 9556 – 2 TL F 9556–1 Truth Table Inputs OE L L H TR L H X Bus B Data to Bus A Bus A Data to Bus B High Z H e HIGH Voltage Level L e LOW Voltage Level X e Immaterial Z e High Impedance Outputs Unit Loading Fan Out 54F 74F Pin Names OE TR A 0 – A7 B0 – B7 Description UL HIGH LOW Input IIH IIL Output IOH IOL Output Enable Input (Active LOW) 10 20 20 mA b1 2 mA Transmit Receive Input 10 20 20 mA b1 2 mA Side A TRI-STATE Inputs or 3 5 1 083 70 mA b650 mA TRI-STATE Outputs 150 40 (33 3) b3 mA 24 mA (20 mA) Side B TRI-STATE Inputs or 3 5 1 083 70 mA b650 mA TRI-STATE Outputs 600 106 6 (80) b12 mA 64 mA (48 mA) 2 Absolute Maximum Ratings (Note 1) If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias Plastic VCC Pin Potential to Ground Pin b 65 C to a 150 C b 55 C to a 125 C b 55 C to a 175 C b 55 C to a 150 C 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 Recommended Operating Conditions Free Air Ambient Temperature Military Commercial Supply Voltage Military Commercial b 55 C to a 125 C 0 C to a 70 C a 4 5V to a 5 5V a 4 5V to a 5 5V b 0 5V to a 7 0V b 0 5V to a 7 0V Input Voltage (Note 2) b 30 mA to a 5 0 mA Input Current (Note 2) Voltage Applied to Output in HIGH State (with VCC e 0V) b 0 5V to VCC Standard Output b 0 5V to a 5 5V TRI-STATE Output Current Applied to Output in LOW State (Max) twice the rated IOL (mA) ESD Last Passing Voltage (Min) 4000V DC Electrical Characteristics Symbol VIH VIL VCD VOH Parameter Min Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage 54F 10% VCC 54F 10% VCC 54F 10% VCC 74F 10% VCC 74F 10% VCC 74F 10% VCC 74F 5% VCC 74F 5% VCC 54F 10% VCC 54F 10% VCC 74F 10% VCC 74F 10% VCC 54F 74F 54F 74F 54F 74F 54F 74F 74F 74F 4 75 3 75 b1 2 54F 74F Typ Max 20 08 b1 2 Units V V V VCC Conditions Recognized as a HIGH Signal Recognized as a LOW Signal Min IIN e b18 mA (OE T R) IOH IOH IOH IOH IOH IOH IOH IOH IOL IOL IOL IOL e e e e e e e e e e e e b 1 mA (An) b 3 mA (An) b 12 mA (Bn) b 1 mA (An) b 3 mA (An) b 15 mA (Bn) b 1 mA (An) b 3 mA (An) 25 24 20 25 24 20 27 27 05 0 55 05 0 55 20 0 50 100 70 10 05 250 50 V Min VOL Output LOW Voltage V Min 20 mA (An) 48 mA (Bn) 24 mA (An) 64 mA (Bn) IIH IBVI IBVIT ICEX VID IOD IIL IIH a IOZH IIL a IOZL IOS Input HIGH Current Input HIGH Current Breakdown Test Input HIGH Current Breakdown (I O) Output HIGH Leakage Current Input Leakage Test Output Leakage Circuit Current Input LOW Current mA mA mA mA V mA mA mA mA mA Max Max Max Max 00 00 Max Max Max Max VIN e 2 7V (OE T R) VIN e 7 0V (OE T R) VIN e 5 5V (An Bn) VOUT e VCC IID e 1 9 mA All Other Pins Grounded VIOD e 150 mV All Other Pins Grounded VIN e 0 5V (OE T R) VOUT e 2 7V (An Bn) VOUT e 0 5V (An Bn) VOUT e 0V (An) VOUT e 0V (Bn) Output Leakage Current Output Leakage Current Output Short-Circuit Current b 60 b 100 70 b 650 b 150 b 225 3 DC Electrical Characteristics (Continued) Symbol IZZ ICCH ICCL ICCZ Parameter Min Bus Drainage Test Power Supply Current Power Supply Current Power Supply Current 70 95 85 54F 74F Typ Max 500 90 120 110 mA mA mA mA Units VCC 0 0V Max Max Max Conditions VOUT e 5 25V VO e HIGH VO e LOW VO e HIGH Z AC Electrical Characteristics 74F Symbol Parameter Min tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay An to Bn or Bn to An Output Enable Time Output Disable Time 25 25 30 35 30 20 TA e a 25 C VCC e a 5 0V CL e 50 pF Typ 42 46 53 60 50 50 Max 60 60 70 80 65 65 54F TA VCC e Mil CL e 50 pF Min 20 20 25 30 25 20 Max 75 75 90 10 0 90 10 0 74F TA VCC e Com CL e 50 pF Min 25 25 30 35 30 20 Max 70 70 80 90 75 75 ns Units ns Logic Diagram TL F 9556 – 4 Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays 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 74F 545 S C X Temperature Range Family 74F e Commercial 54F e Military Device Type Package Code P e Plastic DIP D e Ceramic DIP F e Flatpak L e Leadless Chip Carrier (LCC) S e Small Outline SOIC JEDEC SJ e Small Outline SOIC EIAJ 4 Special Variations QB e Military grade device with environmental and burn-in processing X e Devices shipped in 13 reel Temperature Range C e Commercial (0 C to a 70 C) M e Military (b55 C to a 125 C) Physical Dimensions inches (millimeters) 20-Lead Ceramic Leadless Chip Carrier (L) NS Package Number E20A 20-Lead Ceramic Dual-In-Line Package (D) NS Package Number J20A 5 Physical Dimensions inches (millimeters) (Continued) 20-Lead (0 300 Wide) Molded Small Outline Package JEDEC (S) NS Package Number M20B 20-Lead (0 300 Wide) Molded Small Outline Package EIAJ NS Package Number M20D 6 Physical Dimensions inches (millimeters) (Continued) 20-Lead (0 300 Wide) Molded Dual-In-Line Package (P) NS Package Number N20A 7 54F 74F545 Octal Bidirectional Transceiver with TRI-STATE Outputs Physical Dimensions inches (millimeters) (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 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 National Semiconductor Europe Fax (a49) 0-180-530 85 86 Email cnjwge tevm2 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 81-043-299-2309 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