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54F545 Dataheets PDF



Part Number 54F545
Manufacturers National Semiconductor
Logo National Semiconductor
Description Octal Bidirectional Transceiver
Datasheet 54F545 Datasheet54F545 Datasheet (PDF)

www.DataSheet4U.com 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 .

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www.DataSheet4U.com 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 T R 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 T R 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 .


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