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Part: 74LVQ244QSC
Category:
Description: 74LVQ244 - Low Voltage Octal Buffer/line Driver With 3-STATE Outputs
Company: Fairchild Semiconductor
Datasheet: Download 74LVQ244QSC datasheet File size : 143 kB
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Datasheet text preview:
74LVQ244 Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs
February 1992 Revised June 2001
74LVQ244 Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs
General Description
The LVQ244 is an octal buffer and line driver designed to be employed as a memory address driver, clock driver and bus oriented transmitter or receiver which provides improved PC board density.
Features
s Ideal for low power/low noise 3.3V applications s Implements patented EMI reduction circuitry s Available in SOIC JEDEC, SOIC EIAJ and QSOP packages s Guaranteed simultaneous switching noise level and dynamic threshold performance s Improved latch-up immunity s Guaranteed incident wave switching into 75 s 4 kV minimum ESD immunity
Ordering Code:
Order Number 74LVQ244SC 74LVQ244SJ 74LVQ244QSC Package Number M20B M20D MQA20 Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 20-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide
Device also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering code.
Logic Symbol
IEEE/IEC
Connection Diagram
Truth Tables
Inputs OE1 In L H X Outputs (Pins 12, 14, 16, 18) L H Z Outputs (Pins 3, 5, 7, 9) L H Z
Pin Descriptions
Pin Names OE1, OE2 I0I7 O0O7 Description 3-STATE Output Enable Inputs Inputs Outputs
L L H
Inputs OE2 L L H
H = HIGH Voltage Level X = Immaterial
In L H X
L = LOW Voltage Level Z = High Impedance
© 2001 Fairchild Semiconductor Corporation
DS011356
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74LVQ244
Absolute Maximum Ratings(Note 1)
Supply Voltage (VCC) DC Input Diode Current (IIK) VI = -0.5V VI = VCC + 0.5V DC Input Voltage (VI) DC Output Diode Current (IOK) VO = -0.5V VO = VCC + 0.5V DC Output Voltage (VO) DC Output Source or Sink Current (IO) DC VCC or Ground Current (ICC or IGND) Storage Temperature (TSTG) DC Latch-Up Source or Sink Current
-0.5V to +7.0V -20 mA +20 mA -0.5V to VCC + 0.5V -20 mA +20 mA -0.5V to VCC + 0.5V ±50 mA ±400 mA -65°C to +150°C ±300 mA
Recommended Operating Conditions (Note 2)
Supply Voltage (VCC) Input Voltage (VI) Output Voltage (VO) Operating Temperature (TA) Minimum Input Edge Rate V/t VIN from 0.8V to 2.0V VCC @ 3.0V 125 mV/ns 2.0V to 3.6V 0V to VCC 0V to VCC
-40°C to +85°C
Note 1: The "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The "Recommended Operating Conditions" table will define the conditions for actual device operation. Note 2: Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Symbol VIH VIL VOH Parameter Minimum High Level Input Voltage Maximum Low Level Input Voltage Minimum High Level Output Voltage VOL Maximum Low Level Output Voltage IIN IOLD IOHD ICC Maximum Input Leakage Current Minimum Dynamic (Note 4) Output Current Maximum Quiescent Supply Current IOZ Maximum 3-STATE Leakage Current VOLP VOLV VIHD VILD Quiet Output Maximum Dynamic VOL Quiet Output Minimum Dynamic VOL Minimum High Level Dynamic Input Voltage Maximum Low Level Dynamic Input Voltage 3.6 ±0.25 ±2.5 µA VCC (V) 3.0 3.0 3.0 3.0 3.0 3.0 3.6 3.6 3.6 3.6 4 .0 0.002 TA = +25°C Typ 1 .5 1 .5 2.99 2.0 0.8 2.9 2.58 0.1 0.36 ± 0.1 TA = -40°C to +85°C Guaranteed Limits 2.0 0.8 2.9 2.48 0.1 0.44 ±1.0 36 -25 40.0 V V V V V V µA mA mA µA VOUT = 0.1V or VCC - 0.1V VOUT = 0.1V or VCC - 0.1V IOUT = -50 µA VIN = VIL or VIH (Note 3) IOH = -12 mA IOUT = 50 µA VIN = VIL or VIH (Note 3) IOL = 12 mA VI = VCC, GND VOLD = 0.8V Max (Note 5) VOHD = 2.0V Min (Note 5) VIN = VCC or GND VI (OE) = VIL, V IH VI = VCC, GND VO = VCC, GND 3.3 3.3 3.3 3.3 0.4 -0.4 1.7 1.7 0.8 - 0.8 2.0 0.8 V V V V (Note 6)(Note 7) (Note 6)(Note 7) (Note 6)(Note 8) (Note 6)(Note 8) Units Conditions
Note 3: All outputs loaded thresholds on input associated with output under test. Note 4: Maximum test duration 2.0 ms, one output loaded at a time. Note 5: Incident wave switching on transmission lines with impedances as low as 75 for commercial temperature range is guaranteed for 74LVQ. Note 6: Worst case package. Note 7: Max number of outputs defined as (n). Data inputs are driven 0V to 3.3V; one output at GND. Note 8: Max number of Data Inputs (n) switching. (n - 1) inputs switching 0V to 3.3V. Input-under-test switching: 3.3V to threshold (VILD), 0V to threshold (VIHD), f = 1 MHz.
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74LVQ244
AC Electrical Characteristics
TA = +25°C Symbol Parameter V CC (V) tPHL tPLH tPZL tPZH tPHZ tPLZ tOSHL tOSLH Output to Output Skew Data to Output (Note 9) Output Disable Time Propagation Delay Data to Output Output Enable Time 2 .7 3.3 ± 0.3 2.7 3.3 ± 0.3 2.7 3.3 ± 0.3 2.7 3.3 ± 0.3 Min 2.0 2 .0 2.5 2 .5 1.0 1 .0 CL = 50 pF Typ 8.4 7.0 9.6 8.0 10.8 9.0 1.0 1.0 M ax 12.7 9 .0 16.9 12.0 19.0 13.5 1.5 1.5 TA = -40°C to +85°C CL = 50 pF Min 2 .0 2.0 2.5 2 .5 1.0 1 .0 Max 14.0 9.5 18.0 12.5 20.0 14.0 1.5 1.5 ns ns ns ns Units
Note 9: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH). Parameter guaranteed by design.
Capacitance
Symbol CIN CPD (Note 10) Parameter Input Capacitance Power Dissipation Capacitance Typ 4 .5 70 Units pF pF VCC = Open VCC = 3.3V Conditions
Note 10: CPD is measured at 10 MHz.
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74LVQ244
Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide Package Number M20B
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74LVQ244
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M20D
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