74FR244SJ

Revised May 2001 74FR244 Octal Buffer/Line Driver with 3-STATE Outputs General Description Features The 74FR244 is a non-inverting octal buffer and line driver designed to be employed as memory and address driver, clock driver and bus-oriented transmitter/receiver. ■ 3-STATE outputs drive bus lines or buffer memory address registers ■ Outputs sink 64 mA and source 15 mA ■ Guaranteed pin-to-pin skew Ordering Code: Order Number Package Number Package Description 74FR244SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 74FR244SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74FR244PC 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 Pin Descriptions Pin Names Description OE1,–OE2 Output Enable Input (Active-LOW) I0–I7 Inputs O0–O7 Outputs Truth Tables Inputs Outputs OE1 In L L L L H H H X Z In (Pins 3, 5, 7, 9) Inputs OE2 (Pins 12, 14, 16, 18) Outputs L L L L H H H X Z H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance © 2001 Fairchild Semiconductor Corporation DS010900 www.fairchildsemi.com 74FR244 Octal Buffer/Line Driver with 3-STATE Outputs December 1990 74FR244 Absolute Maximum Ratings(Note 1) 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 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 in LOW State (Max) twice the rated IOL (mA) ESD Last Passing Voltage (Min) Note 2: Either voltage limit or current limit is sufficient to protect inputs. 4000V DC Electrical Characteristics Symbol Parameter Min Typ Max 2.0 Units VIH Input HIGH Voltage VIL Input LOW Voltage 0.8 V VCD Input Clamp Diode Voltage −1.2 V VOH Output HIGH Voltage VCC V Conditions Recognized HIGH Signal Recognized LOW Signal Min IIN = −18 mA 2.4 V Min IOH = −3 mA 2.0 V Min IOH = −15 mA VOL Output LOW Voltage 0.55 V Min IOL = 64 mA IIH Input HIGH Current 5 µA Max VIN = 2.7V IBVI Input HIGH Current Breakdown Test 7 µA Max VIN = 7.0V IIL Input LOW Current −150 µA Max VIN = 0.5V VID Input Leakage Test V 0.0 IID = 1.9 µA, IOD Output Circuit Leakage Current 3.75 µA 0.0 VIOD = 150 mV, IOZH Output Leakage Current 20 µA Max VOUT = 2.7V IOZL Output Leakage Current VOUT = 0.5V IOS Output Short-Circuit Current ICEX Output HIGH Leakage Current 4.75 All Other Pins Grounded All Other Pins Grounded −100 −20 µA Max −225 mA Max VOUT = 0.0V 50 µA Max VOUT = VCC IZZ Bus Drainage Test 100 µA 0.0 VOUT = 5.25V ICCH Power Supply Current 30 50 mA Max All Outputs HIGH ICCL Power Supply Current 55 75 mA Max All Outputs LOW ICCZ Power Supply Current 35 50 mA Max Outputs 3-STATED CIN Input Capacitance 8.0 pF 5.0 www.fairchildsemi.com 2 Symbol tPLH Parameter Propagation Delay tPHL tPZH Output Enable Time tPZL tPHZ Output Disable Time tPLZ 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 1.0 2.6 3.9 1.0 3.9 1.0 1.8 3.9 1.0 3.9 2.5 4.8 6.6 2.5 6.6 2.5 3.9 6.6 2.5 6.6 1.6 3.7 6.4 1.6 6.4 1.6 3.6 6.4 1.6 6.4 Units ns ns ns Extended AC Characteristics Symbol Parameter TA = 0°C to +70°C TA = 0°C to +70°C VCC = +5.0V VCC = +5.0V CL = 50 pF CL = 250 pF Eight Outputs Switching (Note 4) Units (Note 3) tPLH Propagation Delay tPHL tPZH Output Enable Time tPZL tPHZ Output Disable Time tPLZ tOSHL Pin-to-Pin Skew for HL Transitions (Note 5) tOSLH Pin-to-Pin Skew for LH Transitions (Note 5) tOST Pin-to-Pin Skew for HL/LH Transitions (Note 5) Min Max Min Max 1.0 5.0 2.3 7.3 1.0 5.0 2.3 7.3 2.5 7.7 2.5 7.7 1.6 6.5 1.6 6.5 ns ns ns 1.6 ns 1.0 ns 3.5 ns Note 3: This specification is guaranteed but not tested. The limits apply to propagation delays for all paths described switching in phase, i.e., all LOW-to-HIGH, HIGH-to-LOW, 3-STATE-to-HIGH, etc. Note 4: These specifications guaranteed but not tested. The limits represent propagation delays with 250 pF load capacitors in place of the 50 pF load capacitors in the standard AC load. This specification pertains to single output switching only. Note 5: Skew is defined as the absolute value of the difference between the actual propagation delays for any two outputs of the same device. The specification applies to any outputs switching HIGH-to-LOW, (tOSHL), LOW-to-HIGH, (tOSLH), or HIGH-to-LOW and/or LOW-to-HIGH, (tOST). Specification guaranteed with all outputs switching in phase. 3 www.fairchildsemi.com 74FR244 AC Electrical Characteristics 74FR244 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 74FR244 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M20D 5 www.fairchildsemi.com 74FR244 Octal Buffer/Line Driver with 3-STATE 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 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. 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 device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure 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 user. www.fairchildsemi.com www.fairchildsemi.com 6