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U74HC240 Dataheets PDF



Part Number U74HC240
Manufacturers Unisonic Technologies
Logo Unisonic Technologies
Description OCTAL BUFFERS AND LINE DRIVERS
Datasheet U74HC240 DatasheetU74HC240 Datasheet (PDF)

UNISONIC TECHNOLOGIES CO., LTD U74HC240 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS  DESCRIPTION The U74HC240 is a octal buffer and line driver with 3-state outputs. It is organized as two 4-bit buffers/drivers with separate output-enable ( OE ) inputs. When OE is high, the Y outputs are in a high-impedance state and the outputs neither load nor drive the bus lines. When OE is low, the device passes inverted data from the A inputs to the Y outputs. The U74HC240 is designed to improve t.

  U74HC240   U74HC240


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UNISONIC TECHNOLOGIES CO., LTD U74HC240 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS  DESCRIPTION The U74HC240 is a octal buffer and line driver with 3-state outputs. It is organized as two 4-bit buffers/drivers with separate output-enable ( OE ) inputs. When OE is high, the Y outputs are in a high-impedance state and the outputs neither load nor drive the bus lines. When OE is low, the device passes inverted data from the A inputs to the Y outputs. The U74HC240 is designed to improve the performance and density of 3-state memory address drivers, clock drivers and bus-oriented receivers and transmitters. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pull-up resistor; and the minimum value of the resistor is determined by the current-sinking capability of the driver.  FEATURES * Wide supply voltage range from 2V to 6V * Max tpd of 9 ns from A to Y at 6V * Low power consumption, ICC = 8 μA (Max.) at 6V * ±6 mA output driver at 5V * Low Input Current of 1 μA Max  ORDERING INFORMATION Ordering Number Lead Free Halogen Free U74HC240L-S20-R U74HC240G-S20-R U74HC240L-R20-R U74HC240G-R20-R U74HC240L-P20-R U74HC240G-P20-R Package SOP-20 SSOP-20 TSSOP-20 CMOS IC SOP-20 SSOP-20 TSSOP-20 Packing Tape Reel Tape Reel Tape Reel ■ MARKING www.unisonic.com.tw Copyright © 2023 Unisonic Technologies Co., Ltd 1 of 6 QW-R502-498.E U74HC240  PIN CONFIGURATION 1OE 1 1A1 2 2Y4 3 1A2 4 2Y3 5 1A3 6 2Y2 7 1A4 8 2Y1 9 GND 10 20 V CC 19 2OE 18 1Y1 17 2A4 16 1Y2 15 2A3 14 1Y3 13 2A2 12 1Y4 11 2A1  FUNCTION TABLE (each buffer) INPUTS OE A L H L L H X  LOGIC DIAGRAM (positive logic) OUTPUT Y L H Z 1 1OE 2 1A1 19 2OE 18 1Y1 11 2A1 4 1A2 16 1Y2 13 2A2 6 1A3 14 1Y3 15 2A3 8 1A4 12 1Y4 17 2A4 CMOS IC 9 2Y1 7 2Y2 5 2Y3 3 2Y4 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R502-498.E U74HC240 CMOS IC  ABSOLUTE MAXIMUM RATING (unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC Input Clamp Current (VIN<0, or VIN>VCC) IIK -0.5 ~ 7 V ±20 mA Output Clamp Current (VOUT<0, or VOUT>VCC) IOK Output Current IOUT ±20 mA ±35 mA VCC or GND Current Storage Temperature ICC ±70 mA TSTG -65 ~ +150 °C Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.  RECOMMENDED OPERATING COMDITIONS PARAMETER Supply Voltage High-Level Input Voltage Low-Level Input Voltage Input Voltage Output Voltage Input Transition Rise or Fall Rate Operating Temperature SYMBOL VCC VIH VIL VIN VOUT t/v TA CONDITIONS VCC = 2V VCC = 4.5V VCC = 6V VCC = 2V VCC = 4.5V VCC = 6V VCC = 2V VCC = 4.5V VCC = 6V  ELECTRICAL CHARACTERISTICS (Unless otherwise specified) MIN TYP MAX UNIT 2 5 6 V 1.5 3.15 V 4.2 0.5 1.35 V 1.8 0 VCC V 0 VCC V 1000 500 ns/V 400 -40 +125 °C PARAMETER High-Level Output Voltage Low-Level Output Voltage Input Leakage Current (A or OE inputs) High-impedance state Current Quiescent Supply Current SYMBOL TEST CONDITIONS VCC = 2V, IOH = -20 μA VCC = 4.5V, IOH = -20 μA VOH VCC = 6V, IOH = -20 mA VCC = 4.5V, IOH = -6 mA VCC = 6V, IOH = -7.8 mA VCC = 2V, IOL = 20 μA VCC = 4.5V, IOL = 20 μA VOL VCC = 6V, IOL = 20 μA VCC = 4.5V, IOL = 6 mA VCC = 6V, IOL = 7.8 mA II(LEAK) VCC = 6V, VIN = VCC or GND IOZ VCC = 6V, VO = VCC or GND VI(OE) = VIL or VIH ICC VCC = 6V, VIN = VCC or GND IOUT = 0 TA=25°С MIN TYP(1) MAX 1.9 1.998 4.4 4.499 5.9 5.999 3.98 4.3 5.48 5.8 0.002 0.1 0.001 0.1 0.001 0.1 0.17 0.26 0.15 0.26 TA=-40~+125°С MIN TYP(1) MAX UNIT 1.9 4.4 5.9 V 3.7 5.2 0.1 0.1 0.1 V 0.4 0.4 ±0.1 ±100 ±100 μA ±0.01 ±0.5 ±10 μA 8 160 μA UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R502-498.E U74HC240 CMOS IC  SWITCHING CHARACTERISTICS (Uless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS Propagation delay from input A to output Y, tpd tPLH / tPHL CL=50pF, RL=1kΩ CL=150pF, RL=1kΩ Output enable time from input OE to output Y, ten tPZH / tPZL CL=50pF, RL=1kΩ CL=150pF, RL=1kΩ Output disable time from input OE to output Y, tdis tPHZ / tPLZ CL=50pF, RL=1kΩ Propagation of rise or fall, tt CL=50pF, RL=1kΩ tr / tf CL=150pF, RL=1kΩ VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V TA=25°С MIN TYP MAX 50 100 10 20 9 17 75 150 15 30 13 26 75 150 15 30 13 26 100 200 20 40 17 34 44 150 22 30 21 26 28 60 8 12 6 10 45 210 17 42 13 36 TA=-40~+125°С MIN TYP MAX UNIT 150 ns 30 ns 26 ns 190 ns 38 ns 32 ns 225 ns 45 ns 38 ns 250 ns 50 ns 43 ns 225 ns 45 ns 38 ns 90 ns 18 ns .


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