54F/74F243 Quad Bus Transceiver with TRI-STATEÉ Outputs General Description Features The ’F243 is a quad bus transmitter/receiver designed for 4-line asynchronous 2-way data communications between data busses. Y Commercial Y Y 2-Way asynchronous data bus communication Input clamp diodes limit high-speed termination effects Guaranteed 4000V minimum ESD protection Package Number Military 54F243DM (Note 2) J14A Package Description 14-Lead Ceramic Dual-In-Line M14A 14-Lead (0.150× Wide) Molded Small Outline, JEDEC 54F243FM (Note 2) W14B 14-Lead Cerpack 54F243LM (Note 2) E20A 20-Lead Ceramic Leadless Chip Carrier, Type C 74F243SC (Note 1) Note 1: Devices also available in 13× reel. Use Suffix e SCX. Note 2: Military grade device with environmental and burn-in processing. Use suffix e DMQB, FMQB and LMQB. Logic Symbol Connection Diagrams Pin Assignment for DIP, SOIC and Flatpak IEEE/IEC Pin Assignment for LCC TL/F/9502 – 1 TL/F/9502 – 2 TL/F/9502–3 TRI-STATEÉ is a registered trademark of National Semiconductor Corporation. C1995 National Semiconductor Corporation TL/F/9502 RRD-B30M105/Printed in U. S. A. 54F/74F243 Quad Bus Transceiver with TRI-STATE Outputs November 1994 Unit Loading/Fan Out 54F/74F Pin Names E1 E2 An, Bn Description U.L. HIGH/LOW Input IIH/IIL Output IOH/IOL Enable Input (Active LOW) 1.0/1.67 20 mA/b1 mA Enable Input (Active HIGH) 1.0/1.67 20 mA/b1 mA Inputs 3.5/2.67 70 mA/b1.6 mA Outputs 600/106.6(80) b12 mA/64 mA(48 mA) Truth Table Inputs Inputs/Outputs E1 E2 An Bn L L H H L H L H Input N/A Z AeB BeA N/A Z Input H e HIGH Voltage Level L e LOW Voltage Level Z e High Impedance N/A e Not Allowed 2 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. Storage Temperature b 65§ C to a 150§ C Ambient Temperature under Bias Junction Temperature under Bias Plastic b 55§ C to a 125§ C Free Air Ambient Temperature Military Commercial b 55§ C to a 125§ C 0§ C to a 70§ C Supply Voltage Military Commercial b 55§ C to a 175§ C b 55§ C to a 150§ C a 4.5V to a 5.5V a 4.5V to a 5.5V VCC Pin Potential to Ground Pin 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 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. DC Electrical Characteristics Symbol 54F/74F Parameter Min VIH Input HIGH Voltage VIL Input LOW Voltage VCD Input Clamp Diode Voltage VOH Output HIGH Voltage Typ Units 2.0 54F 10% VCC 54F 10% VCC 74F 10% VCC 74F 10% VCC 74F 5% VCC VCC Conditions Max V 0.8 V b 1.2 V 2.4 2.0 2.4 2.0 2.7 Recognized as a HIGH Signal Recognized as a LOW Signal Min IIN e b18 mA V Min IOH IOH IOH IOH IOH IOL e 48 mA (An, Bn) IOL e 64 mA (An, Bn) e e e e e b 3 mA (An, Bn) b 12 mA (An, Bn) b 3 mA (An, Bn) b 15 mA (An, Bn) b 3 mA (An, Bn) VOL Output LOW Voltage 54F 10% VCC 74F 10% VCC 0.55 0.55 V Min IIH Input HIGH Current 54F 74F 20.0 5.0 mA Max VIN e 2.7V IBVI Input HIGH Current Breakdown Test 54F 74F 100 7.0 mA Max VIN e 7.0V (E1, E2) IBVIT Input HIGH Current Breakdown (I/O) 54F 74F 1.0 0.5 mA Max VIN e 5.5V (An, Bn) ICEX Output HIGH Leakage Current 54F 74F 250 50 mA Max VOUT e VCC VID Input Leakage Test 74F V 0.0 IID e 1.9 mA All Other Pins Grounded IOD Output Leakage Circuit Current 74F 3.75 mA 0.0 VIOD e 150 mV All Other Pins Grounded IIL Input LOW Current b 1.0 mA Max VIN e 0.5V (E1, E2) IIH a IOZH Output Leakage Current 70 mA Max VOUT e 2.7V (An, Bn) IIL a IOZL Output Leakage Current IOS Output Short-Circuit Current ICCH Power Supply Current ICCL Power Supply Current ICCZ Power Supply Current 4.75 b 1.6 mA Max VOUT e 0.5V (An, Bn) b 225 mA Max VOUT e 0V (An, Bn) 64 80 mA Max VO e HIGH 64 90 mA Max VO e LOW 71 90 mA Max VO e HIGH Z b 100 3 AC Electrical Characteristics Symbol Parameter 74F 54F 74F TA e a 25§ C VCC e a 5.0V CL e 50 pF TA, VCC e Mil CL e 50 pF TA, VCC e Com CL e 50 pF Min Typ Max Min Max Min Max tPLH tPHL Propagation Delay An to Bn, Bn to An 2.5 2.5 4.0 4.0 5.2 5.2 2.0 2.0 6.5 8.5 2.0 2.0 6.2 6.5 tPZH tPZL Output Enable Time E1 to Bn, E2 to An 2.0 2.0 4.3 5.8 5.7 7.5 2.0 2.0 8.0 10.5 2.0 2.0 6.7 8.5 tPHZ tPLZ Output Disable Time E1 to Bn, E2 to An 2.0 2.0 4.5 4.5 6.0 6.0 1.5 2.0 7.5 8.5 1.5 2.0 7.0 7.0 Units ns ns 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 243 S Temperature Range Family 74F e Commercial 54F e Military C X Special Variations QB e Military grade device with environmental and burn-in processing X e Devices shipped in 13× reel Device Type Package Code D e Ceramic DIP F e Flatpak L e Leadless Chip Carrier (LCC) S e Small Outline SOIC JEDEC 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 4 Physical Dimensions inches (millimeters) (Continued) 14-Lead Ceramic Dual-In-Line Package (D) NS Package Number J14A 14-Lead (0.150× Wide) Molded Small Outline Package, JEDEC (S) NS Package Number M14A 5 54F/74F243 Quad Bus Transceiver with TRI-STATE Outputs Physical Dimensions inches (millimeters) (Continued) 14-Lead Ceramic Flatpak (F) NS Package Number W14B 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. 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