54F657

54F657 TI1 | Alldatasheet

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54F657,74F657 54F657 74F657 Octal Bidirectional Transceiver with 8-Bit Parity Generator/Checker and TRI-STATE(RM) Outputs Literature Number: SNOS212A

54F/74F657 Octal Bidirectional Transceiver with 8-Bit Parity Generator/Checker and TRI-STATE Outputs December 1994 54F/74F657 Octal Bidirectional Transceiver with 8-Bit Parity Generator/Checker and TRI-STATE É Outputs General Description The ’F657 contains eight non-inverting buffers with TRI-STATEÉ outputs and an 8-bit parity generator/checker. It is intended for bus-oriented applications. The buffers have a guaranteed current sinking capability of 24 mA (20 mA mil) at the A port and 64 mA (48 mA mil) at the B port.

Features

Y 300 Mil 24-pin slimline DIP Y Combines ’F245 and ’F280A functions in one package Y TRI-STATE outputs Y B Outputs sink 64 mA (48 mA mil) Y 12 mA source current, B side Y Input diodes for termination effects Commercial Military Package Package DescriptionNumber 74F657SPC N24C 24-Lead (0.300 × Wide) Molded Dual-In-Line 54F657SDM (Note 2) J24F 24-Lead (0.300 × Wide) Ceramic Dual-In-Line 75F657SC (Note 1) M24B 24-Lead (0.300 × Wide) Molded Small Outline, JEDEC 54F657FM (Note 2) W24C 24-Lead Cerpack 54F657LM (Note 2) E28A 24-Lead Ceramic Leadless Chip Carrier, Type C 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 Symbols IEEE/IEC TL/F/9584–5 TL/F/9584–1 TRI-STATEÉ is a registered trademark of National Semiconductor Corporation. C1995 National Semiconductor Corporation RRD-B30M75/Printed in U. S. A. Obsolete

for DIP, SOIC and Flatpak TL/F/9584–2 Pin Assignment for LCC TL/F/9584–3 Unit Loading/Fan Out 54F/74F Pin Names Description U.L. Input I IH/IIL HIGH/LOW Output I OH/IOL A0 –A7 Data Inputs/ 4.5/0.15 90 mA/b 90 mA TRI-STATE Outputs 150/40 (33.3) b3 mA/24 mA (20 mA) B0 –B7 Data Inputs/ 3.5/0.117 70 mA/b70 mA TRI-STATE Outputs 600/106.6 (80) b12 mA/64 mA (48 mA) T/R Transmit/Receive Input 2.0/0.067 40 mA/b40 mA OE Enable Input 2.0/0.067 40 mA/b40 mA PARITY Parity Input/ 3.5/0.117 70 mA/b70mA TRI-STATE Output 600/106.6 (80) b12 mA/64 mA (48 mA) ODD/EVEN ODD/EVEN Parity Input 1.0/0.033 20 mA/b20 mA ERROR Error Output 600/106.6 (80) b12 mA/64 mA (48 mA) Functional Description The Transmit/Receive (T/R ) input determines the direction of the data flow through the bidirectional transceivers. Transmit (active HIGH) enables data from the A port to the B port; Receive (active LOW) enables data from the B port to the A port. The Output Enable (OE ) input disables the parity and ERROR outputs and both the A and B ports by placing them in a HIGH-Z condition when the Output Enable input is HIGH. When transmitting (T/R HIGH), the parity generator detects whether an even or odd number of bits on the A port are HIGH and compares these with the condition of the pari- ty select (ODD/EVEN ). If the Parity Select is HIGH and an even number of A inputs are HIGH, the Parity output is HIGH. In receiving mode (T/R LOW), the parity select and number of HIGH inputs on port B are compared to the condition of the Parity input. If an even number of bits on the B port are HIGH, the parity select is HIGH, and the PARITY input is HIGH, then ERROR will be HIGH to indicate no error. If an odd number of bits on the B port are HIGH, the parity select is HIGH, and the PARITY input is HIGH, the ERROR will be LOW indicating an error. Obsolete

Number of Inputs Input/ OutputsInputs That Output Are High OE T/R ODD/EVEN Parity ERROR Outputs Mode 0, 2, 4, 6, 8 L H H H Z Transmit L H L L Z Transmit L L H H H Receive L L H L L Receive L L L H L Receive L L L L H Receive 1, 3, 5, 7 L H H L Z Transmit L H L H Z Transmit L L H H L Receive L L H L H Receive L L L H H Receive L L L L L Receive Immaterial H X X Z Z Z H e HIGH Voltage Level L e LOW Voltage Level X e Immaterial Z e High Impedance Function Table Inputs Outputs OE T/R L L Bus B Data to Bus A L H Bus A Data to Bus B H X High-Z State H e HIGH Voltage Level L e LOW Voltage Level X e Immaterial Obsolete

TL/F/9584–4 Obsolete

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 b65§Ct o a150§C Ambient Temperature under Bias b55§Ct o a125§C Junction Temperature under Bias b55§Ct o a175§C Plastic b55§Ct o a150§C VCC Pin Potential to Ground Pin b0.5V to a7.0V Input Voltage (Note 2) b0.5V to a7.0V Input Current (Note 2) b30 mA to a5.0 mA Voltage Applied to Output in HIGH State (with V CC e 0V) Standard Output b0.5V to V CC TRI-STATE Output b0.5V to a5.5V Current Applied to Output in LOW State (Max) twice the rated I OL (mA) 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 b55§Ct o a125§C Commercial 0§Ct o a70§C Supply Voltage Military a4.5V to a5.5V Commercial a4.5V to a5.5V Symbol Parameter 54F/74F Units V CC Conditions Min Typ Max VIH Input HIGH Voltage 2.0 V Recognized as a HIGH Signal VIL Input LOW Voltage 0.8 V Recognized as a LOW Signal VCD Input Clamp Diode Voltage b1.2 V Min I IN eb 18 mA VOH Output HIGH 54F 10%V CC 2.5 IOH eb 1m A( A n) Voltage 54F 10% V CC 2.4 IOH eb 3m A( A n,B n, Parity, ERROR ) 54F 10% V CC 2.0 IOH eb 12 mA (B n, Parity, ERROR ) 74F 10% V CC 2.5 V Min IOH eb 1m A( A n) 74F 10% V CC 2.4 IOH eb 3m A( A n Bn, Parity, ERROR ) 74F 10% V CC 2.0 IOH eb 15 mA (B n, Parity, ERROR ) 74F 5% V CC 2.7 IOH eb 1m A( A n) 74F 5% V CC 2.7 IOH eb 3m A( A n,B n, Parity, ERROR ) VOL Output LOW 54F 10% V CC 0.5 IOL e 20 mA (A n) Voltage 54F 10% V CC 0.55 V Min IOL e 48 mA (B n, Parity, ERROR ) 74F 10% V CC 0.5 IOL e 24 mA (A n) 74F 10% V CC 0.55 IOL e 64 mA (B n Parity, ERROR ) IIH Input HIGH Current 20 mA Max VIN e 2.7V (ODD/EVEN ) 40 V IN 2.7V (T/R ,O E ) IBVI Input HIGH Current 100 mAV CC e 0 VIN e 7.0V (T/R ,O E , ODD/EVEN ) Breakdown Test IBVIT Input HIGH Current 1.0 mA Max VIN e 5.5V (Parity, B n) Breakdown Test (I/O) 2.0 VIN e 5.5V (A n) IIL Input LOW Current b20 mA Max VIN e 0.5V (ODD/EVEN ) b40 VIN e 0.5V (T/R ,O E ) IOZH Output Leakage Current 50 mA Max V OUT e 2.7V (ERROR ) IOZL Output Leakage Current b50 mA Max V OUT e 0.5V (ERROR ) IIH a IOZH Output Leakage Current 70 mA Max VI/O e 2.7V (B n, Parity) 90 V I/O e 2.7V (A n) IIL a IOZL Output Leakage Current b70 mA Max VI/O e 0.5V (B n, Parity) b90 VI/O e 0.5V (A n) IOS Output Short-Circuit Current b60 b150 mA Max VOUT e 0V (A n) b100 b225 VOUT e 0V (B n, Parity, ERROR ) ICEX Output HIGH Leakage 250 mA Max V OUT e VCC (ERROR) Current 1.0 mA Max V OUT e VCC (Bn, Parity) 2.0 mA Max V OUT e VCC (An) IZZ Bus Drainage Test 500 mA 0.0V V OUT e 5.25V (A n,B n, Parity, ERROR ) ICCH Power Supply Current 101 125 mA Max V O e HIGH ICCL Power Supply Current 112 150 mA Max V O e LOW ICCZ Power Supply Current 109 145 mA Max V O e HIGH Z Obsolete

TA ea 25§C TA,V CC e Mil T A,V CC e ComSymbol Parameter V CC ea 5.0V CL e 50 pF CL e 50 pF Units CL e 50 pF Min Typ Max Min Max Min Max Note 1: These delay times reflect the TRI-STATE recovery time only and not the signal time through the buffers or the parity check circuity. To assure VALID information at the ERROR pin, time must be allowed for the signal to propagate through the drivers (B to A), through the parity check circuitry (same as A to PARITY), and to the ERROR output after the ERROR pin has been enabled (Output Enable times). VALID data at the ERROR pin t (A to PARITY) a (Output Enable Time).

Ordering Information

The device number is used to form part of a simplified purchasing code where a package type and temperature range are defined as follows: 74F 657 P C X Temperature Range Family Special Variations 74F e Commercial X e Devices shipped in 13 × reels 54F e Military QB e Military grade with environmental and burn-in Device Type processing shipped in tubes Package Code Temperature RangeSP e Slim Plastic DIP C e Commercial (0 §Ct o a70§C)SD e Slim Ceramic DIP M e Military ( b55§Ct o a125§C)F e Flatpak L e Leadless Ceramic Chip Carrier (LCC) S e Small Outline (SOIC) Obsolete

Physical Dimensions inches (millimeters) 28-Lead Ceramic Leadless Chip Carrier (L) 24-Lead (0.300 × Wide) Ceramic Dual-In-Line Package (SD) Obsolete

Physical Dimensions inches (millimeters) (Continued) 24-Lead (0.300 × Wide) Molded Small Outline Package, JEDEC (S) 24-Lead (0.300 × Wide) Molded Dual-In-Line Package (SP) Obsolete

54F/74F657 Octal Bidirectional Transceiver with 8-Bit Parity Generator/Checker and TRI-STATE Outputs Physical Dimensions inches (millimeters) (Continued) 24-Lead Ceramic Flatpak (F) 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 2. A critical component is any component of a life systems which, (a) are intended for surgical implant support device or system whose failure to perform can into the body, or (b) support or sustain life, and whose be reasonably expected to cause the failure of the life failure to perform, when properly used in accordance support device or system, or to affect its safety or with instructions for use provided in the labeling, can effectiveness. be reasonably expected to result in a significant injury to the user. National Semiconductor National Semiconductor National Semiconductor National Semiconductor National Semiconductores National Semiconductor Corporation GmbH Japan Ltd. Hong Kong Ltd. Do Brazil Ltda. (Australia) Pty, Ltd. 2900 Semiconductor Drive Livry-Gargan-Str. 10 Sumitomo Chemical 13th Floor, Straight Block, Rue Deputado Lacorda Franco Building 16 P.O. Box 58090 D-82256 F4urstenfeldbruck Engineering Center Ocean Centre, 5 Canton Rd. 120-3A Business Park Drive Santa Clara, CA 95052-8090 Germany Bldg. 7F Tsimshatsui, Kowloon Sao Paulo-SP Monash Business Park Tel: 1(800) 272-9959 Tel: (81-41) 35-0 1-7-1, Nakase, Mihama-Ku Hong Kong Brazil 05418-000 Nottinghill, Melbourne TWX: (910) 339-9240 Telex: 527649 Chiba-City, Tel: (852) 2737-1600 Tel: (55-11) 212-5066 Victoria 3168 Australia Fax: (81-41) 35-1 Ciba Prefecture 261 Fax: (852) 2736-9960 Telex: 391-1131931 NSBR BR Tel: (3) 558-9999 Tel: (043) 299-2300 Fax: (55-11) 212-1181 Fax: (3) 558-9998 Fax: (043) 299-2500 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. Obsolete

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