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74LS240

Part Number	74LS240
Manufacturer	ON Semiconductor
Description	LOW POWER SCHOTTKY
Published	Apr 23, 2005
Detailed Description	SN74LS240 SN74LS244 Octal Buffer/Line Driver with 3-State Outputs The SN74LS240 and SN74LS244 are Octal Buffers and Line...
Datasheet	74LS240 PDF File

Overview

SN74LS240 SN74LS244 Octal Buffer/Line Driver with 3-State Outputs The SN74LS240 and SN74LS244 are Octal Buffers and Line Drivers designed to be employed as memory address drivers, clock drivers and bus-oriented transmitters/receivers which provide improved PC board density.
http://onsemi.
com • Hysteresis at Inputs to Improve Noise Margins • 3-State Outputs Drive Bus Lines or Buffer Memory Address • Input Clamp Diodes Limit High-Speed Termination Effects GUARANTEED OPERATING RANGES Symbol VCC TA IOH Parameter Supply Voltage Operating Ambient Temperature Range Output Current – High Min 4.
75 0 Typ 5.
0 25 Max 5.
25 70 – 3.
0 – 15 IOL Output Current – Low 24 Unit V °C 20 Registers LOW POWER SCHOTTKY mA mA mA 1 PLASTIC N SUFFIX CASE 738 20 1 SOIC DW SUFFIX CASE 751D ORDERING INFORMATION Device SN74LS240N SN74LS240DW SN74LS244N SN74LS244DW Package 16 Pin DIP 16 Pin 16 Pin DIP 16 Pin Shipping 1440 Units/Box 2500/Tape & Reel 1440 Units/Box 2500/Tape & Reel © Semiconductor Components Industries, LLC, 1999 1 December, 1999 – Rev.
6 Publication Order Number: SN74LS240/D SN74LS240 SN74LS244 LOGIC AND CONNECTION DIAGRAMS DIP (TOP VIEW) SN74LS240 VCC 20 2G 19 1Y1 18 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 17 16 15 14 13 12 11 1 1G 2 1A1 3 4 5 2Y4 1A2 2Y3 6 8 9 10 7 1A3 2Y2 1A4 2Y1 GND SN74LS244 VCC 20 2G 19 1Y1 18 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 17 16 15 14 13 12 11 1 1G 2 1A1 3 4 5 2Y4 1A2 2Y3 6 8 9 10 7 1A3 2Y2 1A4 2Y1 GND TRUTH TABLES SN74LS240 INPUTS OUTPUT 1G, 2G L L H D L H X H L (Z) H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = HIGH Impedance SN74LS244 INPUTS OUTPUT 1G, 2G L L H D L H X L H (Z) http://onsemi.
com 2 SN74LS240 SN74LS244 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol VIH VIL VT+–VT– VIK VOH O Parameter Input HIGH Voltage Input LOW Voltage Hysteresis Input Clamp Diode Voltage 2.
4 Output HIGH Voltage 2.
0 0.
25 VOL O IOZH IOZL IIH IIL IOS Output LOW Voltage 0.
35 Output Off Current HIGH Outpu...

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