CD74ACT240M Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments CD74ACT240M is an octal inverting buffer and bus line driver with 3-state outputs, 24 mA output drive, and active-low output enables in the ACT-family CMOS, housed in a 20-pin SOIC package. Available in stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- CD74ACT240M Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.1400(MOQ 10)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of CD74ACT240M?
- 24 mA output sink current per pin enables robust driving of high-capacitance bus lines and multiple CMOS inputs simultaneously without external buffer transistors
- Dual active-low output enable controls split the 8 channels into two independent 4-bit groups, allowing flexible bus sharing and partial enable in bidirectional systems
- ACT-family CMOS with TTL-compatible input thresholds accepts 5 V TTL logic levels while operating from a single 5 V supply with 50 pF load tolerance
What is CD74ACT240M used for?
The CD74ACT240M is used in address bus buffering, data bus isolation, and memory interface driver circuits in microprocessor and DSP systems where high drive strength and 3-state output control are essential. It also suits backplane bus drivers, FPGA I/O expansion, and signal repeater applications requiring inverting buffering of 8 parallel lines with independent enable control.
What are the specifications of CD74ACT240M?
| YTEOL | 0 |
| Additional Feature | OUTPUT ENABLE ACTIVE HIGH FOR ONE FUNCTION |
| 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 | SOP20,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.16mA |
| Prop. Delay@Nom-Sup | 8.6ns |
| Propagation Delay (tpd) | 7.8ns |
| Qualification Status | Not Qualified |
| Screening Level | 38535Q/M;38534H;883B |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| 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 | 8542.39.00.60 |
| Country of Origin | Malaysia |
Where can I find the CD74ACT240M datasheet?
CD74ACT240M Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74ACT240M?
Compatible alternatives and drop-in replacements for CD74ACT240M:
Bus Driver, ACT Series, 8-Func, 4-Bit, Inverted Output, CMOS, PDSO20
Frequently Asked Questions
What output drive current can the CD74ACT240M provide per pin, and how many bus loads does this support?
The CD74ACT240M delivers a maximum output sink current of 24 mA per output pin, which is sufficient to drive 10 to 15 standard CMOS inputs (each drawing 1 µA to 10 µA) or a 50 pF bus line to full logic swing. This high drive strength makes it suitable for backplane bus drivers and memory address line buffers with multiple receivers.
How does the CD74ACT240M's 3-state output feature enable bus sharing between multiple devices?
The CD74ACT240M has two active-low output enables (OE1 and OE2) that independently disable 4 channels each, placing those outputs in a high-impedance state. Multiple CD74ACT240M devices can share a common bus by asserting only one enable at a time, preventing output contention while maintaining 24 mA drive capability when enabled.
Is the CD74ACT240M compatible with both TTL and CMOS input logic levels at 5 V?
Yes, the ACT-family CD74ACT240M has TTL-compatible input thresholds with a minimum high-level input voltage of 2.0 V, allowing it to accept signals from both 5 V TTL (minimum VOH of 2.4 V) and 5 V CMOS (minimum VOH of 4.5 V) sources. The device operates from a single 5 V supply and meets all ACT-family switching specifications at 50 pF load.
For a compact PCB design, what is the footprint advantage of the CD74ACT240M SOIC-20 package over a PDIP-20 alternative?
The CD74ACT240M SOIC-20 package measures approximately 12.8 mm x 7.5 mm versus 25.4 mm x 7.8 mm for the PDIP-20, reducing PCB area by roughly 50%. The 1.27 mm pin pitch of the SOIC also reduces trace lengths on high-speed bus lines, lowering parasitic inductance and improving signal integrity at bus clock rates above 50 MHz.
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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 |
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| 10+ | $2.7150 | $27.15 |
| 25+ | $2.4932 | $62.33 |
| 100+ | $2.2485 | $224.85 |
| 156+ | $1.9300 | $301.08 |
| 1000+ | $1.2800 | $1280.00 |
| 10000+ | $1.1400 | $11400.00 |
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