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NXP Semiconductors 74ABT240PW,112
- Part No.:
- 74ABT240PW,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74ABT240PW,112.pdf
- Description:
- IC BUFFER INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,210
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Product details
Overview
74ABT240PW,112 from NXP Semiconductors (formerly Philips) is an octal inverting 3-state buffer optimized for high-speed bus interface applications. It features dual output enables (1OE, 2OE), ±64mA/–32mA drive capability, 3.1ns typical propagation delay at 5V/50pF, and operates across –40°C to +85°C. Used in address/data bus driving where controlled signal inversion and tri-state isolation are required.
For engineers reviewing the 74ABT240PW,112 datasheet, 74ABT240PW,112 pinout, 74ABT240PW,112 application, or 74ABT240PW,112 equivalent, key selection criteria include output drive strength, 3-state enable timing (tPZH/tPHZ ≤ 4.8ns), input/output capacitance (CIN = 4pF, COUT = 7pF), power-up 3-state behavior, and latch-up immunity (>500mA per JEDEC 17).
Technical Context
The 74ABT240PW,112 implements two independent 4-bit inverting buffer sections, each controlled by a dedicated output enable (1OE, 2OE). Its BiCMOS architecture delivers low static current (ICCZ = 50µA at VCC = 5.5V) while sustaining high-speed switching with tPLH/tPHL = 3.1ns typical and <4.8ns max over temperature.
It supports live insertion/extraction and power-up 3-state operation, ensuring outputs remain high-impedance during power ramp-up. Input voltage thresholds (VIL = 0.8V, VIH = 2.0V) and robust ESD protection (2000V HBM, 200V MM) make it suitable for industrial backplane and board-level interconnect environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Octal inverting buffer with dual 3-state control (1OE, 2OE) |
| Propagation Delay | 3.1ns typical (tPLH/tPHL, CL = 50pF, VCC = 5V) - enables >200MHz bus toggle rates |
| Output Drive | +64mA sink / –32mA source - drives heavy capacitive loads and multiple TTL inputs |
| Supply Voltage | 4.5V to 5.5V - compatible with standard 5V logic rails and tolerant of supply ripple |
| Input Capacitance | 4pF - minimizes loading on upstream drivers and preserves signal edge integrity |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded and telecom equipment |
| ESD Protection | 2000V HBM, 200V MM - withstands handling and board-level electrostatic events |
Pinout & Package
74ABT240PW,112 is housed in a 20-pin TSSOP (Thin Shrink Small Outline Package), Type I, with 0.65mm pitch and body dimensions 6.5 × 4.4 × 1.2 mm. Pin 1 is marked via package indentation; pin 10 is GND, pin 20 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low output enables - independently disable top/bottom 4-bit sections to isolate bus segments |
| 2, 4, 6, 8 | 1A0–1A3 | Inverting input group A - signals inverted and driven to Y0–Y3 when 1OE = L |
| 11, 13, 15, 17 | 2A0–2A3 | Inverting input group B - signals inverted and driven to Y0–Y3 when 2OE = L |
| 18, 16, 14, 12 | 1Y0–1Y3 | Inverted outputs for group A - high-impedance when 1OE = H |
| 9, 7, 5, 3 | 2Y0–2Y3 | Inverted outputs for group B - high-impedance when 2OE = H |
| 10 | GND | Ground reference - must be low-inductance connection to minimize ground bounce |
| 20 | VCC | Positive supply - requires local 0.1µF ceramic decoupling adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Power-up 3-State | Outputs remain high-impedance until VCC reaches valid operating range - prevents bus contention during power sequencing |
| Live Insertion Support | Withstands hot-plug events without latch-up or damage - enables modular backplane systems |
| Latch-up Immunity | Exceeds 500mA per JEDEC Std 17 - ensures robustness against transient ground shifts and supply faults |
| BiCMOS Process | Combines CMOS input stage with bipolar output transistors - achieves high speed + high drive without excessive ICC |
Applications
| Memory Address Bus Driver | PCI Local Bus Interface |
|---|---|
Use Scenario: Driving multiplexed address lines between CPU and SRAM/Flash in embedded controllers. IC Role / Device Role / Timing Role: Inverts and buffers address bits while enabling/disabling segments via OE to reduce bus loading during idle cycles. Use Value: 3.1ns propagation delay and 64mA sink capability ensure setup/hold timing margins are maintained across 10+ load devices. | Use Scenario: Isolating PCI address/data bus segments during configuration or power management transitions. IC Role / Device Role / Timing Role: Provides controlled 3-state isolation between master and slave slots using separate OE controls per 4-bit group. Use Value: Dual OE pins allow staggered enable/disable timing (tPZH ≤ 4.8ns), preventing bus contention during hot-swap sequences. |
| Industrial Backplane Interconnect | Legacy ISA Bus Expansion |
Use Scenario: Signal conditioning and fanout for distributed I/O modules connected via parallel backplane. IC Role / Device Role / Timing Role: Inverts and strengthens control signals (e.g., /IOR, /IOW) while providing high-impedance isolation between slots. Use Value: –40°C to +85°C rating and 500mA latch-up immunity ensure reliability in uncontrolled cabinet environments. | Use Scenario: Buffering and level-shifting ISA bus address/data lines in retro-computing or legacy test equipment. IC Role / Device Role / Timing Role: Acts as bidirectional inverting repeater with 3-state control to manage shared bus arbitration. Use Value: 4pF input capacitance and 7pF disabled output capacitance minimize signal degradation across long ISA traces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT240DBR | Same logic function, 20-pin SSOP (SOT163-1); tPLH/tPHL = 3.2ns typical; identical VCC/IO specs | SSOP footprint differs - requires PCB redesign; thermal resistance higher than TSSOP | Choose for legacy SSOP-based designs where TSSOP rework is impractical |
| 74LVT240PW,118 | Lower VCC range (2.7–3.6V); 3.3V-only operation; 3.0ns typical delay; 12mA/–12mA drive | Not 5V-compatible; insufficient drive for TTL loads; intended for LVT logic families only | Choose only in new 3.3V systems requiring lower power and no 5V interfacing |
Compared with SN74ABT240DBR and 74LVT240PW,118, the 74ABT240PW,112 uniquely balances 5V compatibility, high drive (+64mA), and TSSOP thermal performance - making it optimal for industrial bus interfaces where signal integrity and ruggedness are prioritized over ultra-low power.
Availability
74ABT240PW,112 is available at Aetrix Electronics and suitable for memory address bus drivers, PCI local bus interfaces, industrial backplane interconnects, and legacy ISA expansion systems requiring stable component supply and long-term industrial qualification.
Supply support for 74ABT240PW,112 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
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Philips' pioneering logic and analog design heritage.
The 74ABT series was developed for high-speed, high-drive 5V bus interface applications demanding robustness, predictable timing, and compatibility with legacy TTL and CMOS loads.
FAQ
What is the maximum output current specification for 74ABT240PW,112?
The 74ABT240PW,112 supports –32mA source current (IOH) and +64mA sink current (IOL) per output under recommended operating conditions. These values are guaranteed across –40°C to +85°C at VCC = 4.5V to 5.5V. The device is rated for 128mA absolute maximum output current in low state, but sustained operation above 64mA requires thermal derating per the datasheet's junction temperature limits.
Does 74ABT240PW,112 support live insertion?
Yes, the 74ABT240PW,112 explicitly supports live insertion and extraction per its product specification. This capability is enabled by its BiCMOS process, latch-up immunity exceeding 500mA (JEDEC Std 17), and robust ESD protection (2000V HBM). When used with appropriate current-limiting circuitry and proper mechanical guides, the 74ABT240PW,112 can be safely inserted into or removed from a powered backplane without damaging the device or system.
What is the function of pins 1 and 19 on 74ABT240PW,112?
Pins 1 and 19 on the 74ABT240PW,112 are the active-low output enable terminals 1OE and 2OE. Each controls four of the eight 3-state outputs: 1OE enables/disables outputs 1Y0–1Y3, and 2OE controls 2Y0–2Y3. When held HIGH, the corresponding outputs enter high-impedance (Z) state; when LOW, they actively drive inverted versions of their respective inputs (1A0–1A3 or 2A0–2A3). Both enables must be LOW for full octal operation.
Is 74ABT240PW,112 compatible with 3.3V logic inputs?
The 74ABT240PW,112 accepts 3.3V logic inputs reliably: its VIH threshold is 2.0V minimum, and VIL is 0.8V maximum, so a 3.3V CMOS signal (VOH ≥ 3.0V, VOL ≤ 0.4V) meets both specifications. However, its outputs swing rail-to-rail (0V to VCC ≈ 5V), so interfacing with 3.3V receivers requires level translation or tolerance verification. The 74ABT240PW,112 itself must be powered at 4.5–5.5V and is not designed for 3.3V VCC operation.
What does "power-up 3-State" mean for 74ABT240PW,112?
"Power-up 3-State" means that all outputs of the 74ABT240PW,112 remain in high-impedance (Z) state from power-on until VCC rises above the valid operating threshold (~2.1V) and stabilizes. This prevents bus contention or unintended signal assertion during power ramp-up. The feature is intrinsic to the BiCMOS design and requires no external reset or enable sequencing - the 74ABT240PW,112 automatically enters functional mode only after VCC is fully established.
74ABT240PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ABT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74ABT240PW,112 FAQ
1.How can I place an order for 74ABT240PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT240PW,112 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 74ABT240PW,112 reliable?
The price and inventory of 74ABT240PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT240PW,112 is usually 5 days.
3.What payment methods are accepted for 74ABT240PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT240PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ABT240PW,112?
74ABT240PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT240PW,112 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 74ABT240PW,112?
For technical support, including 74ABT240PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT240PW,112 requirements.
6.How does Aetrix verify that 74ABT240PW,112 is sourced from the original manufacturer or authorized distributors?
All 74ABT240PW,112 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 74ABT240PW,112 meets industry standards.
7.What is the process for return or replacement of 74ABT240PW,112?
All 74ABT240PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT240PW,112, 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 74ABT240PW,112 part is unused and in its original packaging.
Return procedure for 74ABT240PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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