Revised May 1999 74F2240 Octal Buffer/Line Driver with 25Ω Series Resistors in the Outputs General Description Features The 74F2240 is an inverting octal buffer and line driver designed to drive capacitive inputs of MOS memory devices, address and clock lines or act as a low undershoot general purpose bus driver. ■ 3-STATE outputs drive bus lines or buffer memory address registers The 25Ω series resistor in the outputs reduces undershoot and ringing and eliminates the need for external resistors. ■ Outputs sink 12 mA and source 15 mA ■ 25Ω series resistors in outputs eliminate the need for external resistors ■ Designed to drive the capacitive inputs of MOS devices ■ Guaranteed 4000V minimum ESD protection Ordering Code: Order Number Package Number Package Description 74F2240SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 74F2240QC V20A 20-Lead Plastic Lead Chip Carrier (PLCC), JEDEC MO-047, 0.350 Square Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Truth Table OE1 D1n O1n OE2 D2n O2n H X Z H X Z L H L L H L L L H L L H Unit Loading/Fan Out Pin U.L. Output HIGH/LOW IOH/IOL 1.0/1.667 20 µA/−1 mA Description Names OE1, OE2 3-STATE Output Enable Input (Active LOW) © 1999 Fairchild Semiconductor Corporation DS010898.prf I0 - I7 Inputs O0 - O7 Outputs 1.0/1.667 20 µA/−1 mA 750/20 −15 mA/12 mA www.fairchildsemi.com 74F2240 Octal Buffer/Line Driver January 1995 74F2240 Absolute Maximum Ratings(Note 1) Recommended Operating Conditions −65°C to + 150°C Storage Temperature Ambient Temperature under Bias −55° to +125°C Junction Temperature under Bias −55°C to +150°C Free Air Ambient Temperature 0°C to 70°C +4.5V to +5.5V Supply Voltage −0.5V to +7.0V VCC Pin Potential to Ground Pin 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 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 VCC V Conditions Input HIGH Voltage VIL Input LOW Voltage 0.8 V VCD Input Clamp Diode Voltage −1.2 V Min V Min 0.75 V Min IOL = 12 mA VOH 2.0 Units VIH Recognized as a HIGH Signal Recognized as a LOW Signal IIN = −18 mA IOH = −3 mA Output HIGH 10% VCC 2.4 Voltage 10% VCC 2.0 VOL Output LOW Voltage 10% VCC IIH Input HIGH Current 5.0 µA Max VIN = 2.7V IBVI Input HIGH Current Breakdown Test 7.0 µA Max VIN = 7.0V ICEX Output HIGH Leakage Current 50 µA Max VID Input Leakage Test IOD 4.75 Output Leakage Circuit Current IIL Input LOW Current V 0.0 3.75 µA 0.0 −1.0 mA Max IOH = −15 mA VOUT = VCC IID = 1.9 µA All Other Pins Grounded VIOD = 150 mV All Other Pins Grounded VIN = 0.5V (OE1, OE2, Dn) IOZH Output Leakage Current 50 µA Max VOUT = 2.7V IOZL Output Leakage Current −50 µA Max VOUT = 0.5V IOS Output Short-Circuit Current −225 mA Max VOUT = 0V IZZ Bus Drainage Test 500 µA 0.0 VOUT = 5.25V ICCH Power Supply Current 16 29 mA Max VO = HIGH ICCL Power Supply Current 47 75 mA Max VO = LOW ICCZ Power Supply Current 45 63 mA Max VO = HIGH Z www.fairchildsemi.com −100 2 Symbol Parameter TA = +25°C TA = 0°C to +70°C VCC = +5.0V VCC = +5.0V CL = 50 pF CL = 50 pF Min Typ Max Min Max tPLH Propagation Delay 3.0 4.9 7.5 3.0 7.5 tPHL Data to Output 2.0 3.7 6.0 2.0 6.0 tPZH Output Enable Time 2.0 3.9 6.5 2.0 7.0 4.0 6.7 9.5 4.0 10.0 2.0 4.1 6.5 2.0 7.0 2.0 4.9 8.5 2.0 9.5 tPZL tPHZ tPLZ Output Disable Time 3 Units ns ns ns www.fairchildsemi.com 74F2240 AC Electrical Characteristics 74F2240 Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide Package Number M20B www.fairchildsemi.com 4 20-Lead Plastic Lead Chip Carrier (PLCC), JEDEC MO-047, 0.350 Square Package Number V20A 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. 74F2240 Octal Buffer/Line Driver Physical Dimensions inches (millimeters) unless otherwise noted (Continued)