Revised March 1999 74F2244 Octal Buffer/Line Driver with 25Ω Series Resistors in Outputs General Description Features The F2244 is an octal buffer/line driver designed to drive the capacitive inputs of MOS memory drivers, address drivers, clock drivers and bus-oriented transmitters/receivers. ■ 3-STATE outputs drive bus lines or buffer memory address registers The 25Ω series resistors in the outputs reduce ringing and eliminate the need for external resistors. ■ 25Ω series resistors in outputs eliminate the need for external resistors. ■ 12 mA source current ■ Designed to drive the capacitive inputs of MOS devices ■ Guaranteed 4000V minimum ESD protection Ordering Code: Order Number 74F2244SC 74F2244MSA 74F2244PC Package Number M20B Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide MSA20 20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Logic Symbol IEEE/IEC © 1999 Fairchild Semiconductor Corporation DS009499.prf www.fairchildsemi.com 74F2244 Octal Buffer/Line Driver with 25Ω Series Resistors in Outputs October 1988 74F2244 Unit Loading/Fan Out Pin Names U.L. Input IIH/IIL HIGH/LOW Output IOH/IOL 20 µA/−1 mA Description OE1, OE2 3-STATE Output Enable Input (Active LOW) 1.0/1.667 OE2 3-STATE Output Enable Input (Active HIGH) 1.0/1.667 20 µA/−1 mA Ian, Ibn Inputs 1.0/2.667 (Note 1) 20 µA/−1.6 mA Oan,Obn Outputs 750/20 −15 mA/12 mA Note 1: Worst-case F2244 disabled Truth Table OE1 Ian Oan OE2 Ibn Obn H X Z H X Z L H H L H H L L L L L L H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance www.fairchildsemi.com 2 Recommended Operating Conditions Storage Temperature −65°C to +150°C Ambient Temperature under Bias −55°C to +125°C Free Air Ambient Temperature Junction Temperature under Bias −55°C to +150°C Supply Voltage 0°C to +70°C +4.5V to +5.5V −0.5V to +7.0V VCC Pin Potential to Ground Pin Input Voltage (Note 3) −0.5V to +7.0V Input Current (Note 3) −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 Note 2: 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 in LOW State (Max) Note 3: Either voltage limit or current limit is sufficient to protect inputs. twice the rated IOL (mA) ESD Last Passing Voltage (Min) 4000V DC Electrical Characteristics Symbol Min Input HIGH Voltage 2.0 VIL Input LOW Voltage 0.8 V VCD Input Clamp Diode Voltage −1.2 V Min VOH Output HIGH Voltage V Min 10% VCC 2.4 10% VCC 2.0 5% VCC 2.7 Typ Max Units VCC Parameter VIH V Recognized as a LOW Signal IOH = −3 mA IOH = −15 mA IOH = −3 mA Min IOL = 1 mA 5.0 µA Max VIN = 2.7V Input HIGH Current Breakdown Test 7.0 µA Max VIN = 7.0V Output HIGH Leakage Current 50 µA Max VOUT = VCC V 0.0 IID = 1.9 µA 3.75 µA 0.0 −1.0 mA Max Output LOW Voltage IIH Input HIGH Current IBVI ICEX VID Input Leakage 0.50 IOL = 12 mA 0.75 4.75 Test All other pins grounded Output Leakage Circuit Current IIL IIN = −18 mA V VOL IOD Conditions Recognized as a HIGH Signal VIOD = 150 mV All other pins grounded Input LOW Current −1.6 VIN = 0.5V (OE1, OE 2, OE2) VIN = 0.5V (In) IOZH Output Leakage Current 50 µA Max IOZL Output Leakage Current −50 µA Max VOUT = 0.5V IOS Output Short-Circuit Current −225 mA Max VOUT = 0V ICCH Power Supply Current 40 60 mA Max VO = HIGH ICCL Power Supply Current 60 90 mA Max VO = LOW ICCZ Power Supply Current 60 90 mA Max VO = HIGH Z −100 3 VOUT = 2.7V www.fairchildsemi.com 74F2244 Absolute Maximum Ratings(Note 2) 74F2244 AC Electrical Characteristics Symbol Parameter TA = +25°C TA = −55°C to +125°C TA = 0°C to +70°C VCC = +5.0V CL = 50 pF CL = 50 pF CL = 50 pF Max Min Max Min tPLH Propagation Delay Min 1.5 7.0 2.0 6.5 1.5 7.0 tPHL Data to Output 2.5 8.0 2.0 7.0 2.0 8.0 tPZH Output Enable Time tPZL tPHZ Output Disable Time tPLZ www.fairchildsemi.com Typ Max 1.5 9.0 2.0 7.0 1.0 9.5 2.5 11.5 2.0 8.5 2.5 12.0 1.5 9.0 2.0 7.0 1.0 9.5 1.5 8.5 2.0 7.5 1.5 9.5 4 Units ns ns 74F2244 Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide Package Number M20B 20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide Package Number MSA20 5 www.fairchildsemi.com 74F2244 Octal Buffer/Line Driver with 25Ω Series Resistors in Outputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N20A 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: 2. A critical component in any component of a life support 1. Life support devices or systems are devices or systems device or system whose failure to perform can be reawhich, (a) are intended for surgical implant into the sonably expected to cause the failure of the life support body, or (b) support or sustain life, and (c) whose failure device or system, or to affect its safety or effectiveness. to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the www.fairchildsemi.com user. 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.