SN74ACT240PWIn StockTexas Instruments
The SN74ACT240PW is an octal inverting buffer and line driver with 3-state outputs, operating at 5V with 24mA output current and 50pF load capacitance in a 20-pin TSSOP package. From $0.45 in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74ACT240PW Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4463(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Octal inverting 3-state buffer/line driver in compact 20-pin TSSOP package
- ACT family logic with 5V supply and 24mA output drive current (I_OL)
- Active-low output enable control for easy bus sharing and tri-state operation
- 50pF load capacitance spec ensures signal integrity in high-speed bus applications
- JEDEC e4 compliant (Pb-free) with unidirectional signal flow for simplified board design
Applications
The SN74ACT240PW is widely used in data bus buffering and line driving applications where signal isolation and drive strength are critical. It suits microprocessor address/data bus interfaces, memory systems, and backplane drivers where 3-state control enables multiple devices to share a common bus. Its ACT-family speed and 5V compatibility also make it a reliable choice in industrial control systems and communication equipment.
Specifications
| YTEOL | 0 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | ACT |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.024A |
| 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 | TSSOP20,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.04mA |
| Prop. Delay@Nom-Sup | 9.5ns |
| Propagation Delay (tpd) | 9.5ns |
| Qualification Status | Not Qualified |
| Screening Level | AEC-Q100 |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output drive capability of the SN74ACT240PW?
The SN74ACT240PW provides a maximum output low current (I_OL) of 24mA, making it suitable for driving bus lines with up to 50pF load capacitance. This drive strength is typical of the ACT logic family and supports reliable signal integrity in high-speed digital systems.
How is the output enable controlled on the SN74ACT240PW?
The SN74ACT240PW uses active-low output enable pins (OE1 and OE2) to control the 3-state outputs. When an enable pin is high, its associated four outputs are placed in a high-impedance state, allowing multiple devices to share a common bus without signal contention.
What package does the SN74ACT240PW come in, and what are common alternatives?
The SN74ACT240PW is packaged in a 20-pin TSSOP (PDSO-G20), a compact surface-mount package suitable for space-constrained PCB designs. Pin-compatible alternatives include the SN74ACT240DW (SOIC-20) and SN74ACT240N (DIP-20) for through-hole applications, all offering equivalent electrical performance.
What supply voltage does the SN74ACT240PW require?
The SN74ACT240PW operates from a 5V supply voltage, consistent with the ACT (Advanced CMOS TTL-compatible) logic family. It features TTL-compatible input thresholds, making it easy to interface with both CMOS and TTL logic systems without additional level-shifting circuitry.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.8394 | $0.84 |
| 7+ | $0.6995 | $4.90 |
| 10+ | $0.6510 | $6.51 |
| 22+ | $0.5036 | $11.08 |
| 100000+ | $0.4463 | $44630.00 |
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