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NXP Semiconductors 74ABT16240ADL,118
- Part No.:
- 74ABT16240ADL,118
- Manufacturer:
- NXP Semiconductors
- Package:
- -
- Datasheet:
-
74ABT16240ADL,118.pdf
- Description:
- IC BUFFER INVERT 5.5V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
74ABT16240ADL,118 from Nexperia is a 16-bit inverting buffer/line driver with 3-state outputs in TSSOP48 package, operating from 4.5 V to 5.5 V supply, delivering ±64 mA/–32 mA output drive, and specified for –40 °C to +85 °C industrial temperature range. It functions as four independent 4-bit buffers with individual active-low output enables (1OE–4OE), enabling selective bus isolation in high-density data path applications such as memory address/data buffering and backplane interface.
For engineers reviewing the 74ABT16240ADL,118 datasheet, 74ABT16240ADL,118 pinout, 74ABT16240ADL,118 application, or 74ABT16240ADL,118 equivalent, this device supports partial power-down via IOFF circuitry, features TTL-compatible input/output levels, and provides sub-4 ns propagation delay with robust ESD protection (HBM >2000 V, CDM >1000 V).
Technical Context
The 74ABT16240ADL,118 implements BiCMOS logic architecture to achieve high-speed switching (tPLH/tPHL ≤ 3.7 ns at 5.0 V) while maintaining TTL-level compatibility on both inputs and outputs. Its four independent 3-state control sections allow granular bus segment management without affecting other channels.
IOFF circuitry actively disables outputs during VCC = 0 V conditions, blocking backflow current up to ±100 μA leakage, making it suitable for hot-swap and mixed-voltage system designs. The device includes eight GND and four VCC pins to minimize switching noise and ensure stable power delivery across all 16 buffered channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures reliable operation across standard 5 V TTL/CMOS systems with ±10 % tolerance. |
| Output Drive | +64 mA sink / –32 mA source - Supports driving heavy capacitive loads (e.g., >50 pF buses) and fan-out to multiple TTL inputs. |
| Propagation Delay | tPLH/tPHL ≤ 3.7 ns @ VCC = 5.0 V - Enables use in high-speed address/data latching up to ~250 MHz clock domains. |
| IOFF Leakage | ±100 μA @ VCC = 0 V - Prevents damaging back-current during live insertion or partial system power-down. |
| ESD Protection | HBM >2000 V, CDM >1000 V - Meets industrial-grade handling requirements without external protection components. |
| Operating Temperature | –40 °C to +85 °C - Qualified for extended industrial environments including factory automation and telecom infrastructure. |
| Input Thresholds | VIL ≤ 0.8 V, VIH ≥ 2.0 V - Guarantees clean recognition of standard TTL logic levels across full voltage and temperature range. |
Pinout & Package
TSSOP48 package (SOT362-1), plastic thin shrink small outline, 48 leads, body width 6.1 mm, with 8 ground pins and 4 supply pins for low-noise operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE (Pins 1, 48, 25, 24) | Active-low output enable | Each controls four corresponding Y outputs; LOW enables inversion, HIGH forces high-impedance state. |
| 1A0–1A3, 2A0–2A3, 3A0–3A3, 4A0–4A3 (Pins 47,46,44,43; 41,40,38,37; 36,35,33,32; 30,29,27,26) | Data inputs | Four independent 4-bit input groups; each group inverted and routed to respective Y outputs. |
| 1Y0–1Y3, 2Y0–2Y3, 3Y0–3Y3, 4Y0–4Y3 (Pins 2,3,5,6; 8,9,11,12; 13,14,16,17; 19,20,22,23) | Inverted 3-state outputs | Corresponding inverted outputs per group; tri-stated when respective OE is HIGH. |
| GND (Pins 4,10,15,21,28,34,39,45) | Ground reference | Eight distributed GND pins reduce ground bounce and improve signal integrity in high-speed switching. |
| VCC (Pins 7,18,31,42) | Power supply | Four VCC pins provide low-impedance supply paths, minimizing voltage droop during simultaneous output transitions. |
Key Features
| Feature | Design Value |
|---|---|
| BiCMOS process technology | Enables <3.7 ns propagation delay while sustaining ±64 mA output drive without thermal derating. |
| IOFF partial power-down | Blocks destructive back-current during VCC ramp-down or hot-swap, eliminating need for external isolation circuitry. |
| Multiple VCC/GND distribution | Four VCC and eight GND pins suppress simultaneous switching noise, improving signal fidelity in dense PCB layouts. |
| TTL-compatible I/O levels | Accepts and drives standard TTL thresholds (VIH ≥ 2.0 V, VOL ≤ 0.55 V), enabling direct interconnection with legacy 5 V logic families. |
| Live insertion/extraction support | IOFF + ESD hardening (HBM >2000 V) permits safe board replacement in powered-backplane systems. |
Applications
| Memory Address Buffering | Backplane Data Interface |
|---|---|
|
Use Scenario: Isolating microprocessor address bus from multiple memory modules sharing a common bus. IC Role / Device Role / Timing Role: Inverting 16-bit address buffer with per-group 3-state control, enabling dynamic module selection without bus contention. Use Value: Four independent OE pins allow selective activation of memory banks while maintaining signal integrity across 16 lines at ≤3.7 ns delay. |
Use Scenario: Interfacing CPU-side parallel data bus to modular backplane with hot-swappable daughter cards. IC Role / Device Role / Timing Role: Bidirectional 16-bit line driver with IOFF-enabled safe insertion during system operation. Use Value: IOFF protection prevents backfeed into powered-down slots; ±64 mA drive sustains signal integrity over 15 cm backplane traces. |
| Industrial PLC I/O Expansion | Legacy Bus Signal Conditioning |
|
Use Scenario: Extending parallel I/O capacity in programmable logic controllers using discrete 4-bit peripheral modules. IC Role / Device Role / Timing Role: 16-bit inverting buffer partitioned into four isolated 4-bit segments for independent peripheral enable control. Use Value: Individual OE pins simplify firmware-controlled peripheral arbitration; –40 °C to +85 °C rating ensures reliability in uncontrolled cabinet environments. |
Use Scenario: Level-shifting and noise-immune signal regeneration between aging TTL-based subsystems and modern controllers. IC Role / Device Role / Timing Role: TTL-input/TTL-output inverting repeater with high noise margin (VIL = 0.8 V, VOH = 2.4 V min). Use Value: 0.55 V max VOL and 2.4 V min VOH guarantee >0.4 V noise margin; BiCMOS speed accommodates legacy 20–33 MHz bus timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit inverting 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT16240DGGR | Same logic function and pinout, but TI package (SSOP-48, SOT370-1) has wider body (7.5 mm) vs. Nexperia's 6.1 mm TSSOP. | Requires PCB footprint redesign; thermal resistance differs due to package geometry and thermal pad absence. | Select if existing design uses TI SSOP footprint or requires TI's specific qualification documentation. |
| 74LVCH16240APAG | Lower voltage operation (1.65–3.6 V), non-inverting, and no IOFF - lacks partial power-down capability. | Not suitable for 5 V mixed-supply or hot-swap systems; limited to 3.3 V-only environments with different timing margins. | Choose only for cost-sensitive 3.3 V applications where IOFF and 5 V compatibility are unnecessary. |
Compared with SN74ABT16240DGGR, the 74ABT16240ADL,118 offers tighter TSSOP packaging and guaranteed IOFF behavior; versus 74LVCH16240APAG, it delivers 5 V robustness, inversion, and fail-safe power-down - critical for industrial bus isolation.
Availability
74ABT16240ADL,118 is available at Aetrix Electronics and suitable for memory address buffering, backplane data interfacing, and industrial PLC I/O expansion requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature extremes.
Supply support for 74ABT16240ADL,118 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, analog, and MOSFET solutions, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.
The 74ABT series targets high-speed, 5 V TTL-compatible bus interface applications demanding low propagation delay, strong drive strength, and robust power-down safety - optimized for industrial control and computing infrastructure.
FAQ
Does the 74ABT16240ADL,118 support hot-swap insertion?
Yes. The device incorporates IOFF circuitry that disables outputs when VCC = 0 V, limiting backflow current to ±100 μA. Combined with HBM >2000 V and CDM >1000 V ESD ratings, it meets industrial hot-swap requirements without external protection components.
What is the maximum capacitive load this device can drive reliably?
Based on dynamic characterization at CL = 50 pF and RL = 500 Ω, the 74ABT16240ADL,118 maintains ≤3.7 ns propagation delay and meets VOL ≤ 0.55 V at 64 mA sink. It is rated for sustained operation with loads up to 50 pF per output, typical for backplane and multi-drop bus applications.
Can the 74ABT16240ADL,118 be used in mixed-voltage systems with 3.3 V logic?
No. Its absolute minimum VIH is 2.0 V and recommended VCC is 4.5–5.5 V. While inputs may recognize 3.3 V HIGH signals marginally, output VOH drops below 2.4 V at VCC = 4.5 V under load, risking marginal noise margin with 3.3 V receivers. It is designed exclusively for 5 V TTL systems.
How does the IOFF feature behave during power sequencing?
IOFF activates automatically when VCC falls below ~0.8 V, forcing all outputs into high-impedance state regardless of OE pin state. This prevents reverse current flow from powered downstream circuits into the unpowered IC, protecting both the buffer and connected devices during asymmetric power-up/down sequences.
74ABT16240ADL,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74ABT16240ADL,118 FAQ
1.How can I place an order for 74ABT16240ADL,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT16240ADL,118 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 74ABT16240ADL,118 reliable?
The price and inventory of 74ABT16240ADL,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT16240ADL,118 is usually 5 days.
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6.How does Aetrix verify that 74ABT16240ADL,118 is sourced from the original manufacturer or authorized distributors?
All 74ABT16240ADL,118 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74ABT16240ADL,118 meets industry standards.
7.What is the process for return or replacement of 74ABT16240ADL,118?
All 74ABT16240ADL,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT16240ADL,118, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 74ABT16240ADL,118 part is unused and in its original packaging.
Return procedure for 74ABT16240ADL,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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