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| 74F2240 Octal Buffer/Line Driver January 1995 Revised May 1999 74F2240 Octal Buffer/Line Driver with 25 Series Resistors in the Outputs General Description 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. The 25 series resistor in the outputs reduces undershoot and ringing and eliminates the need for external resistors. Features s 3-STATE outputs drive bus lines or buffer memory address registers s Outputs sink 12 mA and source 15 mA s 25 series resistors in outputs eliminate the need for external resistors s Designed to drive the capacitive inputs of MOS devices s Guaranteed 4000V minimum ESD protection Ordering Code: Order Number 74F2240SC 74F2240QC Package Number M20B V20A Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 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 H L L D1n X H L O1n Z L H OE2 H L L D2n X H L O2n Z L H Unit Loading/Fan Out Pin Description Names OE1, OE2 3-STATE Output Enable Input (Active LOW) I0 - I7 O0 - O7 Inputs Outputs 1.0/1.667 750/20 20 A/-1 mA -15 mA/12 mA 1.0/1.667 20 A/-1 mA HIGH/LOW U.L. Output IOH/IOL (c) 1999 Fairchild Semiconductor Corporation DS010898.prf www.fairchildsemi.com 74F2240 Absolute Maximum Ratings(Note 1) Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias VCC Pin Potential to Ground Pin Input Voltage (Note 2) Input Current (Note 2) Voltage Applied to Output In HIGH State (with VCC = 0V) Standard Output 3-STATE Output Current Applied to Output in LOW State (Max) ESD Last Passing Voltage (Min) twice the rated IOL (mA) 4000V -0.5V to VCC -0.5V to +5.5V -65C to + 150C -55 to +125C -55C to +150C -0.5V to +7.0V -0.5V to +7.0V -30 mA to +5.0 mA Recommended Operating Conditions Free Air Ambient Temperature Supply Voltage 0C to 70C +4.5V 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. Note 2: Either voltage limit or current limit is sufficient to protect inputs. DC Electrical Characteristics Symbol VIH VIL VCD VOH VOL IIH IBVI ICEX VID IOD IIL IOZH IOZL IOS IZZ ICCH ICCL ICCZ Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage Output LOW Voltage Input HIGH Current Input HIGH Current Breakdown Test Output HIGH Leakage Current Input Leakage Test Output Leakage Circuit Current Input LOW Current Output Leakage Current Output Leakage Current Output Short-Circuit Current Bus Drainage Test Power Supply Current Power Supply Current Power Supply Current 16 47 45 -100 4.75 3.75 -1.0 50 -50 -225 500 29 75 63 10% VCC 10% VCC 10% VCC 2.4 2.0 0.75 5.0 7.0 50 Min 2.0 0.8 -1.2 Typ Max Units V V V V V A A A V A mA A A mA A mA mA mA Min Min Min Max Max Max 0.0 0.0 Max Max Max Max 0.0 Max Max Max VCC Conditions Recognized as a HIGH Signal Recognized as a LOW Signal IIN = -18 mA IOH = -3 mA IOH = -15 mA IOL = 12 mA VIN = 2.7V VIN = 7.0V VOUT = VCC IID = 1.9 A All Other Pins Grounded VIOD = 150 mV All Other Pins Grounded VIN = 0.5V (OE1, OE2, Dn) VOUT = 2.7V VOUT = 0.5V VOUT = 0V VOUT = 5.25V VO = HIGH VO = LOW VO = HIGH Z www.fairchildsemi.com 2 74F2240 AC Electrical Characteristics TA = +25C Symbol Parameter Min tPLH tPHL tPZH tPZL tPHZ tPLZ Output Disable Time Propagation Delay Data to Output Output Enable Time 3.0 2.0 2.0 4.0 2.0 2.0 VCC = +5.0V CL = 50 pF Typ 4.9 3.7 3.9 6.7 4.1 4.9 Max 7.5 6.0 6.5 9.5 6.5 8.5 TA = 0C to +70C VCC = +5.0V CL = 50 pF Min 3.0 2.0 2.0 4.0 2.0 2.0 Max 7.5 6.0 7.0 10.0 7.0 9.5 ns ns ns Units 3 www.fairchildsemi.com 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 74F2240 Octal Buffer/Line Driver Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 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. |
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