Revised November 1999 74ABT241 Octal Buffer/Line Driver with 3-STATE Outputs General Description Features The ABT241 is an octal buffer and line driver with 3-STATE outputs designed to be employed as a memory and address driver, clock driver, or bus-oriented transmitter/ receiver. ■ Non-inverting buffers ■ Output sink capability of 64 mA, source capability of 32 mA ■ Guaranteed latchup protection ■ High impedance glitch free bus loading during entire power up and power down cycle ■ Nondestructive hot insertion capability Ordering Code: Order Number 74ABT241CSC 74ABT241CSJ Package Number M20B M20D Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide Body 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74ABT241CMSA MSA20 20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide 74ABT241CMTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Device 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 Output Enable Input (Active LOW) OE2 Output Enable Input (Active HIGH) I0–I7 Inputs O0–O7 Outputs Truth Table OE1 I0–3 O0–3 OE2 I4–7 O4–7 H X Z L X Z L H H H H H L L L H L L H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance © 1999 Fairchild Semiconductor Corporation DS011691 www.fairchildsemi.com 74ABT241 Octal Buffer/Line Driver with 3-STATE Outputs January 1995 74ABT241 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 −0.5V 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 −40°C to +85°C +4.5V to +5.5V Minimum Input Edge Rate (∆V/∆t) Data Input 50 mV/ns Enable Input 20 mV/ns Voltage Applied to Any Output in the Disabled or Power-Off State −0.5V to 5.5V in the HIGH State −0.5V to VCC Current Applied to Output in LOW State (Max) twice the rated IOL (mA) 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. DC Latchup Source Current (Over Comm Operating Range) −500 mA Over Voltage Latchup (I/O) Note 2: Either voltage limit or current limit is sufficient to protect inputs. 10V DC Electrical Characteristics Symbol Parameter Min Typ Max VCC Input HIGH Voltage VIL Input LOW Voltage 0.8 V VCD Input Clamp Diode Voltage −1.2 V Min IIN = −18 mA VOH Output HIGH Voltage 2.5 V Min IOH = −3 mA 2.0 V Min IOH = −32 mA V Min IOL = 64 mA µA Max µA Max µA Max V 0.0 Output LOW Voltage IIH Input HIGH Current V Conditions VIH VOL 2.0 Units 0.55 1 1 IBVI Input HIGH Current Breakdown Test 7 IIL Input LOW Current −1 −1 4.75 Recognized HIGH Signal Recognized LOW Signal VIN = 2.7V (Note 4) VIN = VCC VIN = 7.0V VIN = 0.5V (Note 4) VIN = 0.0V IID = 1.9 µA VID Input Leakage Test IOZH Output Leakage Current 10 µA 0 − 5.5V VOUT = 2.7V; OEn = 2.0V IOZL Output Leakage Current −10 µA 0 − 5.5V VOUT = 0.5V; OEn = 2.0V IOS Output Short-Circuit Current −275 mA Max ICEX Output High Leakage Current 50 µA Max VOUT = VCC IZZ Bus Drainage Test 100 µA 0.0 VOUT = 5.5V; All Others GND All Other Pins Grounded −100 VOUT = 0.0V ICCH Power Supply Current 50 µA Max All Outputs HIGH ICCL Power Supply Current 30 mA Max All Outputs LOW ICCZ Power Supply Current 50 µA Max OEn = VCC; All Others at VCC or Ground ICCT Additional ICC/Input Outputs Enabled 2.5 mA Outputs 3-STATE 2.5 mA Outputs 3-STATE 50 µA VI = VCC − 2.1V Max Enable Input VI = VCC − 2.1V Data Input VI = VCC − 2.1V All Others at VCC or Ground ICCD Dynamic ICC No Load mA/ (Note 4) 0.1 MHz Max Outputs Open OEn = GND, (Note 3) One Bit Toggling, 50% Duty Cycle Note 3: For 8 bits toggling, ICCD < 0.8 mA/MHz. Note 4: Guaranteed, but not tested. www.fairchildsemi.com 2 (SOIC package) Conditions Symbol Parameter Min CL = 50 pF, Typ Max Units VCC 0.5 0.8 V 5.0 TA = 25°C (Note 5) RL = 500Ω VOLP Quiet Output Maximum Dynamic VOL VOLV Quiet Output Minimum Dynamic VOL −1.3 −0.8 V 5.0 TA = 25°C (Note 5) VOHV Minimum HIGH Level Dynamic Output Voltage 2.7 3.1 V 5.0 TA = 25°C (Note 7) VIHD Minimum HIGH Level Dynamic Input Voltage 2.0 1.5 V 5.0 TA = 25°C (Note 6) VILD Maximum LOW Level Dynamic Input Voltage V 5.0 TA = 25°C (Note 6) 1.1 0.8 Note 5: Max number of outputs defined as (n). n − 1 data inputs are driven 0V to 3V. One output at LOW. Guaranteed, but not tested. Note 6: Max number of data inputs (n) switching. n − 1 inputs switching 0V to 3V. Input-under-test switching: 3V to threshold (VILD), 0V to threshold (VIHD). Guaranteed, but not tested. Note 7: Max number of outputs defined as (n). n − 1 data inputs are driven 0V to 3V. One output HIGH. Guaranteed, but not tested. AC Electrical Characteristics (SOIC and SSOP package) Symbol TA = +25°C TA = −40°C to +85°C VCC = +5V VCC = 4.5V–5.5V CL = 50 pF Parameter Min Typ CL = 50 pF Max Min Units Max tPLH Propagation Delay 1.0 4.6 1.0 4.6 tPHL Data to Outputs 1.0 4.6 1.0 4.6 tPZH Output Enable 1.1 6.8 1.1 6.8 tPZL Time 1.3 6.8 1.3 6.8 tPHZ Output Disable 1.6 6.8 1.6 6.8 tPLZ Time 1.0 5.9 1.0 5.9 ns ns ns Capacitance Symbol Parameter Typ Units Conditions TA = 25°C CIN Input Capacitance 5.0 pF VCC = 0V COUT (Note 8) Output Capacitance 9.0 pF VCC = 5.0V Note 8: COUT is measured at frequency f = 1 MHz, per MIL-STD-883, Method 3012. 3 www.fairchildsemi.com 74ABT241 DC Electrical Characteristics 74ABT241 Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide Body Package Number M20B www.fairchildsemi.com 4 74ABT241 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 74ABT241 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide Package Number MSA20 www.fairchildsemi.com 6 74ABT241 Octal Buffer/Line Driver with 3-STATE Outputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC20 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 7 www.fairchildsemi.com