Revised August 1999 74F2243 Quad Bus Transceiver with 25Ω Series Resistors in the Outputs General Description Features The 74F2243 is a quad bus transmitter/receiver which can be used for 4-line asynchronous 2-way data communications between data busses. It is designed to drive the capacitive inputs of MOS memory drivers, address drivers, clock drivers, and bus-oriented transmitters/receivers. ■ 25Ω series resistors in outputs eliminate the need for external resistors The 25Ω series resistors in the outputs reduce ringing and eliminate the need for external resistors. ■ 2-Way asynchronous data bus communication ■ 3-STATE outputs ■ 12 mA source current ■ Designed to drive the capacitive inputs of MOS devices Ordering Code: Order Number Package Number 74F2243SC M14A Package Description 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbol Connection Diagram IEEE/IEC Truth Table Inputs Inputs/Outputs E1 E2 An Bn L L Input B=A N/A L H N/A H L Z Z H H A=B Input H = HIGH Voltage Level L = LOW Voltage Level Z = High Impedance N/A = Not Allowed Unit Loading/Fan Out Pin Names Description U.L. Input IIH/IIL 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 Inputs 3.5/2.67 70 µA/−1.6 mA Outputs 750/20 −15 mA/12 mA An , Bn © 1999 Fairchild Semiconductor Corporation DS009530 www.fairchildsemi.com 74F2243 Quad Bus Transceiver October 1988 74F2243 Absolute Maximum Ratings(Note 1) Storage Temperature −65°C to +150°C Ambient Temperature under Bias −55°C to +125°C Junction Temperature under Bias −55°C to +150C 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 Recommended Operating Conditions 0°C to +70°C Free Air Ambient Temperature +4.5V to +5.5V Supply Voltage Voltage Applied to Output in HIGH State (with VCC = 0V) Standard Output −0.5V to VCC 3-STATE Output −0.5V to +5.5V 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. Current Applied to Output Note 2: Either voltage limit or current limit is sufficient to protect inputs. twice the rated IOL (mA) in LOW State (Max) ESD Last Passing Voltage (Min) 4000V DC Electrical Characteristics Symbol Parameter Min Typ Max Input HIGH Voltage VIL Input LOW Voltage 0.8 V VCD Input Clamp Diode Voltage −1.2 V VOH Output HIGH 10% VCC 2.4 Voltage 10% VCC 2.0 5% VCC 2.7 VOL IIH IBVI 2.0 V Conditions Recognized as a HIGH Signal Recognized as a LOW Signal Min IIN = −18 mA IOH = −3 mA (An, B n) V Min IOH = −15 mA (An, Bn) IOH = −3 mA (An, B n) Output LOW 0.50 Voltage 0.75 Input HIGH Current Input HIGH Current Breakdown Test IBVIT VCC Units VIH Input HIGH Current Breakdown Test (I/O) IIL Input LOW Current IIH + IOZH Output Leakage Current IIL + IOZL Output Leakage Current IOS Output Short-Circuit Current ICEX Output HIGH Leakage Current ICCH Power Supply Current 64 ICCL Power Supply Current ICCZ Power Supply Current IOL = 1 mA (An, Bn) V Min 20 µA Max VIN = 2.7V (E1, E2) 100 µA Max VIN = 7.0V (E1, E2) 1.0 mA Max VIN = 5.5V (An, Bn) −1.0 mA Max VIN = 0.5V (E1, E2) 70 µA Max VOUT = 2.7V (An, Bn) IOL = 12 mA (An, Bn) −1.6 mA Max VOUT = 0.5V (An, Bn) −225 mA Max VOUT = 0V (An, Bn) 250 µA Max VOUT = VCC 80 mA Max VO = HIGH 64 90 mA Max VO = LOW 71 90 mA Max VO = HIGH Z −100 AC Electrical Characteristics Symbol Parameter Min TA = +25°C TA = 0°C to +70°C VCC = +5.0V VCC = +5.0V CL = 50 pF CL = 50 pF Max Min Max tPLH Propagation Delay 1.5 7.0 1.5 7.0 tPHL An to Bn, Bn to An 2.5 8.0 2.0 8.0 tPZH Output Enable Time 1.5 9.0 1.0 9.5 tPZL E1 to Bn, E2 to An 2.5 11.5 2.5 12.0 tPHZ Output Disable Time 1.5 9.0 1.0 9.5 tPLZ E1 to Bn, E2 to An 1.5 8.5 1.5 9.5 www.fairchildsemi.com 2 Typ Units ns ns 74F2243 Quad Bus Transceiver 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. 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