74F2245 NSC | Alldatasheet

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Y 25X series resistors in B outputs eliminate the need for external resistors Y Guaranteed 2000V minimum ESD protection Commercial Package Package DescriptionNumber 74F2245SC (Note 1) M20B 20-Lead (0.300 × Wide) Molded Small Outline, JEDEC Note 1: Devices also available in 13 × reel. Use suffix e SCX. Logic Symbols TL/F/12151–1 IEEE/IEC TL/F/12151–2 TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.

DIP, SOIC and SSOP TL/F/12151–3 Unit Loading/Fan Out 74F Pin Names Description U.L. Input I IH/IIL HIGH/LOW Output I OH/IOL OE Output Enable Input (Active LOW) 1.0/2.0 20 mA/b1.2 mA T/R Transmit/Receive Input 1.0/2.0 20 mA/b1.2 mA A0 –A7 Side A Inputs or 3.5/1.083 70 mA/b0.65 mA TRI-STATE Outputs 150/40(38.3) b3 mA/24 mA B0 –B7 Side B Inputs or 3.5/1.083 70 mA/b0.65 mA TRI-STATE Outputs 750/20 b15 mA/12 mA Truth Table Inputs Output 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 http:/ /www.national.com 2

Absolute Maximum Ratings (Note 1) Storage Temperature b65§Ct o a150§C Ambient Temperature under Bias b55§Ct o a125§C Junction Temperature under Bias 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) 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. Recommended Operating Conditions Free Air Ambient Temperature Commercial 0 §Ct o a70§C Supply Voltage Commercial a4.5V to a5.5V Symbol Parameter 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 10% V CC 2.4 I OH eb 3m A( A n) Voltage 10% V CC 2.0 V Min I OH eb 15 mA (B n) 5% V CC 2.7 I OH eb 3m A( A n) VOL Output LOW 10% V CC 0.5 I OL e 24 mA (A n) Voltage 10% V CC 0.5 V Min I OL e 1m A( B n) 10% V CC 0.75 I OL e 12 mA (B n) IIH Input HIGH 5.0 mA Max VIN e 2.7V Current IBVI Input HIGH Current 7.0 mA Max V IN e 7.0V (OE , T/R )Breakdown Test IBVIT Input HIGH Current 0.5 mA Max V IN e 5 . 5V( A n,B n)Breakdown (I/O) ICEX Output HIGH 50 mA Max V OUT e VCC (An,B n)Leakage Current VID Input Leakage 4.75 V 0.0 IID e 1.9 mA Test All Other Pins Grounded IOD Output Leakage 3.75 mA 0.0 VIOD e 150 mV Circuit Current All Other Pins Grounded IIL Input LOW Current b1.2 mA Max V IN e 0.5V (T/R ,O E ) IIH a IOZH Output Leakage Current 70 mA Max V OUT e 2.7V (A n,B n) IIL a IOZL Output Leakage Current b650 mA Max V OUT e 0.5V (A n,B n) http:/ /www.national.com3

Symbol Parameter 74F Units V CC Conditions Min Typ Max IOS Output Short-Circuit Current b60 b150 mA Max VOUT e 0V (A n) b100 b225 V OUT e 0V (B n) IZZ Bus Drainage Test 500 mA 0.0V V OUT e 5.25V(An,B n) ICCH Power Supply Current 70 90 mA Max V O e HIGH ICCL Power Supply Current 95 120 mA Max V O e LOW ICCZ Power Supply Current 85 110 mA Max V O e HIGH Z 74F 74F TA ea 25§C TA,V CC e ComSymbol Parameter V CC ea 5.0V CL e 50 pF Units CL e 50 pF Min Typ Max Min Max

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/12151–4 http:/ /www.national.com 4

http:/ /www.national.com5

74F2245 Octal Bidirectional Transceiver with TRI-STATE Outputs Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead (0.300 × Wide) Molded Small Outline Package, JEDEC (S) 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 Corporation Europe Southeast Asia Japan Ltd. Fax: a49 (0) 180-530 85 86 Fax: (852) 2376 3901 Tel: 81-3-5620-7561Americas Email: europe.support @ nsc.com Email: sea.support @ nsc.com Fax: 81-3-5620-6179Tel: 1(800) 272-9959 Deutsch Tel: a49 (0) 180-530 85 85Fax: 1(800) 737-7018 English Tel: a49 (0) 180-532 78 32Email: support @ nsc.com Fran3ais Tel: a49 (0) 180-532 93 58 Italiano Tel: a49 (0) 180-534 16 80http:/ /www.national.com 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.