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74F2244 Octal Buffer/Line Driver with 25 Series Resistors in Outputs
October 1988 Revised March 1999
74F2244 Octal Buffer/Line Driver with 25 Series Resistors in Outputs
General Description
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. The 25 series resistors in the outputs reduce ringing and eliminate the need for external resistors.
Features
s 3-STATE outputs drive bus lines or buffer memory address registers s 12 mA source current 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 74F2244SC 74F2244MSA 74F2244PC Package Number M20B MSA20 N20A Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide 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
(c) 1999 Fairchild Semiconductor Corporation
DS009499.prf
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74F2244
Unit Loading/Fan Out
U.L. Pin Names OE1, OE2 OE2 Ian, Ibn Oan,Obn Description HIGH/LOW 3-STATE Output Enable Input (Active LOW) 3-STATE Output Enable Input (Active HIGH) Inputs Outputs 1.0/1.667 1.0/1.667 1.0/2.667 (Note 1) 750/20 Input IIH/IIL Output IOH/IOL 20 A/-1 mA 20 A/-1 mA 20 A/-1.6 mA -15 mA/12 mA
Note 1: Worst-case F2244 disabled
Truth Table
OE1 H L L
H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance
Ian X H L
Oan Z H L
OE2 H L L
Ibn X H L
Obn Z H L
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74F2244
Absolute Maximum Ratings(Note 2)
Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias VCC Pin Potential to Ground Pin Input Voltage (Note 3) Input Current (Note 3) 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 -55C 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 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. Note 3: Either voltage limit or current limit is sufficient to protect inputs.
DC Electrical Characteristics
Symbol VIH VIL VCD VOH Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage 10% VCC 10% VCC 5% VCC VOL IIH IBVI ICEX VID IOD IIL IOZH IOZL IOS ICCH ICCL ICCZ 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 Power Supply Current Power Supply Current Power Supply Current -100 40 60 60 -1.0 -1.6 50 -50 -225 60 90 90 A A mA mA mA mA Max Max Max Max Max Max mA Max 3.75 A 0.0 4.75 2.4 2.0 2.7 0.50 0.75 5.0 7.0 50 A A A V Max Max Max 0.0 V Min Min 2.0 0.8 -1.2 Typ Max Units V V V V Min Min VCC Conditions Recognized as a HIGH Signal Recognized as a LOW Signal IIN = -18 mA IOH = -3 mA IOH = -15 mA IOH = -3 mA IOL = 1 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, OE 2, OE2) VIN = 0.5V (In) VOUT = 2.7V VOUT = 0.5V VOUT = 0V VO = HIGH VO = LOW VO = HIGH Z
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74F2244
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 1.5 2.5 1.5 2.5 1.5 1.5 VCC = +5.0V CL = 50 pF Typ Max 7.0 8.0 9.0 11.5 9.0 8.5 Min 2.0 2.0 2.0 2.0 2.0 2.0 Max 6.5 7.0 7.0 8.5 7.0 7.5 Min 1.5 2.0 1.0 2.5 1.0 1.5 Max 7.0 8.0 9.5 12.0 9.5 9.5 ns ns TA = -55C to +125C CL = 50 pF TA = 0C to +70C CL = 50 pF Units
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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
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74F2244 Octal Buffer/Line Driver with 25 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.

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