SN74HC240N Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
SN74HC240N is a high-speed octal buffer and line driver IC with 3-state outputs and active-low enable control. Featuring HC/UH logic family with 50pF load capacitance and 6mA output current. From $0.71, in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- SN74HC240N Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7142(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74HC240N?
- Octal 3-state outputs enable easy bus sharing and signal isolation in digital systems
- Active-low enable control (ENABLE LOW) for flexible bus management
- HC/UH logic family ensures high-speed switching with low power consumption
- 20-pin DIP package for easy through-hole prototyping and assembly
- Supports 50pF load capacitance with 6mA output drive current
What is SN74HC240N used for?
The SN74HC240N is widely used as a bus driver and line driver in microprocessor systems, memory interfaces, and data communication equipment. It is ideal for buffering address/data buses in embedded systems and industrial control boards. The 3-state outputs make it suitable for bidirectional bus architectures and high-density logic designs requiring signal isolation.
What are the specifications of SN74HC240N?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | HC/UH |
| JESD-30 Code | R-PDIP-T20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.006A |
| Number of Bits | 4 |
| Number of Functions | 8 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 25ns |
| Propagation Delay (tpd) | 190ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Where can I find the SN74HC240N datasheet?
SN74HC240N Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74HC240N?
Compatible alternatives and drop-in replacements for SN74HC240N:
Bus Driver, HC/UH Series, 2-Func, 4-Bit, Inverted Output, CMOS, PDSO20
Frequently Asked Questions
What is the SN74HC240N used for?
The SN74HC240N is an octal buffer and line driver IC designed for driving high-capacitance or low-impedance loads in bus-oriented digital systems. It features 3-state outputs controlled by active-low enable signals, making it ideal for microprocessor bus buffering, memory address line driving, and data communication interfaces.
What are the key electrical specifications of the SN74HC240N?
The SN74HC240N operates in the HC/UH logic family with a maximum output low current (I_OL) of 6mA, a load capacitance (CL) of 50pF, and JESD-30 package code R-PDIP-T20. It uses active-low enable control (ENABLE LOW) for unidirectional signal flow and is Pb-free compliant (e4 JESD-609 code).
What package does the SN74HC240N come in and what are alternatives?
The SN74HC240N comes in a 20-pin Dual-In-Line (DIP) through-hole package, making it easy to use in prototyping and traditional PCB designs. Compatible alternatives include the SN74HC240DW (SOIC package), SN74HCT240N (TTL-compatible inputs), and the 74HC240 from other manufacturers like NXP and ON Semiconductor.
How do I enable or disable the SN74HC240N outputs?
The SN74HC240N has two active-low output enable pins (OE1 and OE2). When either enable pin is driven HIGH, all corresponding outputs enter a high-impedance (3-state) condition, effectively disconnecting them from the bus. Driving both enable pins LOW activates the outputs and allows signal propagation through the buffer.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.9810 | $0.98 |
| 6+ | $0.8175 | $4.91 |
| 64+ | $0.8000 | $51.20 |
| 1000+ | $0.7458 | $745.80 |
| 4000+ | $0.7317 | $2926.80 |
| 8000+ | $0.7142 | $5713.60 |
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