74F243 FAIRCHILD

Document overview

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Technical content

Features

■ 2-Way asynchronous data bus communication ■ Input clamp diodes limit high-speed termination effects Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbol IEEE/IEC Connection Diagram Truth Table H = HIGH Voltage Level Z = High Impedance L = LOW Voltage Level N/A = Not Allowed Unit Loading/Fan Out Order Code Package Number Package Description 74F243SC M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow Inputs Inputs/Outputs E1 E2 A n B n L L Input B = A LH N / A N / A HLZZ HH A = B Input Pin

Description

U.L. Input I IH/IIL Names HIGH/LOW Output IOH /IOL E1 Enable Input (Active LOW) 1.0/1.67 20 µA/−1 mA E2 Enable Input (Active HIGH) 1.0/1.67 20 µA/−1 mA An, Bn Inputs 3.5/2.67 70 µA/−1.6 mA Outputs 600/106.6 (80) −12 mA/64 mA (48 mA)

www.fairchildsemi.com 2 74F243 Absolute Maximum Ratings(Note 1) Recommended Operating Conditions 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. Storage Temperature −65°C to +150°C Ambient Temperature under Bias −55°C to +125°C Junction Temperature under Bias −55°C to +150°C VCC Pin Potential to Ground Pin −0.5V to +7.0V Input Voltage (Note 2) −0.5V to +7.0V Input Current (Note 2) −30 mA to +5.0 mA Voltage Applied to Output in HIGH State (with VCC = 0V) Standard Output −0.5V to VCC 3-STATE Output −0.5V to +5.5V Current Applied to Output in LOW State (Max) twice the rated I OL (mA) ESD Last Passing Voltage (Min) 4000V Free Air Ambient Temperature 0 °C to +70°C Supply Voltage +4.5V to +5.5V Symbol Parameter Min Typ Max Units VCC Conditions 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 −1.2 V Min I IN = −18 mA VOH Output HIGH 10% V CC 2.4 VM i n IOH = −3 mA (An, Bn) Voltage 10% V CC 2.0 I OH = −15 mA (An, Bn) 5% VCC 2.7 I OH = −3 mA (An, Bn) VOL Output LOW 10% V CC 0.55 V Min I OL = 64 mA (An, Bn) Voltage IIH Input HIGH 5.0 µAM a x V IN = 2.7V Current IBVI Input HIGH Current 7.0 µAM a x V IN = 7.0V (E1, E2) Breakdown Test IBVIT Input HIGH Current 0.5 mA Max V IN = 5.5V (An, Bn) Breakdown (I/O) ICEX Output HIGH 50 µAM a x V OUT = VCCLeakage Current VID Input Leakage 4.75 V 0.0 IID = 1.9 µA Test All Other Pins Grounded IOD Output Leakage 3.75 µA0 . 0 VIOD = 150 mV Circuit Current All Other Pins Grounded IIL Input LOW Current −1.0 mA Max V IN = 0.5V (E1, E2) IIH + IOZH Output Leakage Current 70 µAM a x V OUT = 2.7V (An, Bn) IIL + IOZL Output Leakage Current −1.6 mA Max V OUT = 0.5V (An, Bn) IOS Output Short-Circuit Current −100 −225 mA Max V OUT = 0V (An, Bn) ICCH Power Supply Current 64 80 mA Max V O = HIGH ICCL Power Supply Current 64 90 mA Max V O = LOW ICCZ Power Supply Current 71 90 mA Max V O = HIGH Z

3 www.fairchildsemi.com 74F243 Symbol Parameter TA = +25°CT A = −55°C to +125°CT A = 0°C to +70°C Units VCC = +5.0V V CC = 5.0V V CC = 5.0V C L = 50 pF C L = 50 pF C L = 50 pF Min Typ Max Min Max Min Max ns ns

www.fairchildsemi.com 4 74F243 Quad Bus Transceiver with 3-STATE Outputs Physical Dimensions inches (millimeters) unless otherwise noted 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow Package Number M14A Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD’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 FAIRCHILD 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 (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be rea- sonably expected to result in a significant injury to the user. 2. A critical component in any component of a life support device or system whose failure to perform can be rea- sonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com