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SN74ABT240ADBLE
Texas Instruments
BUS DRIVER, ABT SERIES, 4-BIT
3152 Pcs New Original In Stock
Element Bit per Element Output
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*Quantity
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Minimum 1
5.0 / 5.0
- (297 Ratings)
SN74ABT240ADBLE
Product Overview
9201091
DiGi Electronics Part Number
SN74ABT240ADBLE-DGManufacturer
Texas Instruments
SN74ABT240ADBLE
Description
BUS DRIVER, ABT SERIES, 4-BITInventory
3152 Pcs New Original In Stock
Element Bit per Element Output
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
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SN74ABT240ADBLE Technical Specifications
Category
Logic, Buffers, Drivers, Receivers, Transceivers
Packaging
Bulk
Series
*
Product Status
Active
Base Product Number
74ABT240
Datasheet & Documents
HTML Datasheet
SN74ABT240ADBLE-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Affected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
2156-SN74ABT240ADBLE
TEXTISSN74ABT240ADBLE
Standard Package
1,664
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
快遞速度令人讚賞，讓我購物體驗非常愉快！
Dec 02, 2025
Je remercie DiGi Electronics pour leur service toujours rapide et leur support efficace.
Dec 02, 2025
The product quality from DiGi Electronics is unbeatable, and their commitment to excellence is clear.
Dec 02, 2025
The customer support from Di Digi Electronics is truly commendable.
Dec 02, 2025
The prices are affordable, and the service is consistently friendly and welcoming.
Dec 02, 2025
DiGi Electronics's punctual shipment process saves me a lot of waiting time, which I really appreciate.
Dec 02, 2025
The combination of fast shipping and low prices makes them stand out.
Dec 02, 2025
Their pricing is significantly better than other electronics sellers, providing great value for your money.
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Frequently Asked Questions (FAQ)
What are the key reliability risks when designing in the SN74ABT240ADBLE in high-humidity environments, and how should I mitigate them given its MSL 3 rating?
The SN74ABT240ADBLE has a Moisture Sensitivity Level (MSL) of 3, meaning it can absorb moisture during storage that may cause delamination or popcorning during reflow. In high-humidity environments or if exposed to ambient moisture before assembly, this risk increases. To mitigate, store the SN74ABT240ADBLE in dry cabinets (<5% RH) and limit floor life to 168 hours after opening the moisture barrier bag. Always follow IPC/JEDEC J-STD-033 guidelines for baking (125°C for 24 hours) if exposure exceeds limits. For long-term reliability in humid operating conditions, consider conformal coating on the PCB to reduce moisture ingress to the package.
Can the SN74ABT240ADBLE safely drive long backplane traces in industrial control systems, and what layout considerations are critical to avoid signal integrity issues?
Yes, the SN74ABT240ADBLE can drive long backplane traces, but its high-output drive strength (up to 64 mA IOL/IOH) increases the risk of signal overshoot, ringing, and EMI on uncontrolled impedance lines. To ensure signal integrity, use series termination resistors (typically 22–33 Ω) near the SN74ABT240ADBLE outputs and maintain controlled impedance routing (e.g., 50–75 Ω). Keep trace lengths matched for differential pairs and minimize stubs. For backplanes exceeding 30 cm, consider adding RC snubbers or using slower slew-rate alternatives if EMI becomes problematic, though this may reduce timing margin.
Is the SN74ABT240ADBLE a drop-in replacement for the 74ACT240 in legacy telecom systems, and what compatibility risks should I evaluate?
While the SN74ABT240ADBLE shares similar pinout and function with the 74ACT240, it is not a guaranteed drop-in replacement due to differences in input threshold levels and output drive characteristics. The SN74ABT240ADBLE uses ABT logic with TTL-compatible inputs and higher output current, which may cause timing skew or excessive loading in systems designed for the lower-drive 74ACT240. Verify voltage compatibility (both are 5V-tolerant), but also simulate or bench-test propagation delay and fan-out under load. Pay special attention to systems using passive pull-ups or wired-OR configurations, where the SN74ABT240ADBLE’s stronger drive could alter rise times and cause contention.
How does the SN74ABT240ADBLE perform in hot-swap or live-insertion scenarios, and what protection circuitry is recommended to prevent damage?
The SN74ABT240ADBLE is not inherently designed for hot-swap applications and lacks built-in ESD protection beyond standard HBM ratings. Applying power while inputs/outputs are driven can cause latch-up or excessive current through protection diodes. To safely use the SN74ABT240ADBLE in live-insertion systems, add external TVS diodes on all I/O lines, implement staggered pin sequencing (ground first, then power, then signals), and consider using current-limiting resistors (100–470 Ω) in series with outputs. For high-reliability systems, evaluate alternatives like the SN74LVC240A with integrated hot-swap features or use buffer ICs specifically rated for live insertion.
What are the trade-offs of using the SN74ABT240ADBLE versus the SN74LVT240A in low-power embedded designs, especially regarding power consumption and voltage compatibility?
The SN74ABT240ADBLE offers higher drive strength and 5V-tolerant inputs, making it suitable for mixed-voltage systems, but it consumes significantly more quiescent current (up to 80 µA typical) compared to the SN74LVT240A (typically <10 µA). In battery-powered or low-power embedded designs, this difference can impact runtime. Additionally, the SN74LVT240A supports 3.3V operation natively with better speed-power product, while the SN74ABT240ADBLE is optimized for 5V systems. If your design operates at 3.3V or requires aggressive power savings, the SN74LVT240A is preferable—but only if the higher output drive of the SN74ABT240ADBLE isn’t needed for capacitive loading or noise immunity.
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SN74ABT240ADBLE CAD Models
Texas Instruments SN74ABT240ADBLE PCB symbols & footprints
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