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NXP Semiconductors 74ABT623PW,112
- Part No.:
- 74ABT623PW,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74ABT623PW,112.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,259
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Product details
Overview
74ABT623PW,112 from NXP Semiconductors is an octal non-inverting 3-state bus transceiver with dual active-HIGH/active-LOW enables (OEAB and OEBA), designed for asynchronous bidirectional data transfer between two 8-bit buses. It delivers ±32 mA/±64 mA output drive, operates from 4.5 V to 5.5 V, and supports −40 °C to +85 °C industrial temperature range in TSSOP20 package.
For engineers reviewing the 74ABT623PW,112 datasheet, 74ABT623PW,112 pinout, 74ABT623PW,112 application, or 74ABT623PW,112 equivalent, key selection criteria include dual-enable timing flexibility, high-current 3-state bus isolation, power-up 3-state behavior, latch-up immunity (>500 mA), and HBM ESD protection (>2000 V).
Technical Context
The 74ABT623PW,112 implements a BiCMOS architecture enabling simultaneous low static current and high-speed switching. Its dual enable logic (OEAB active HIGH, OEBA active LOW) permits four distinct operational modes: A→B transmission, B→A transmission, bus isolation, and transparent latching when both enables are asserted.
Propagation delays are tightly controlled: tPLH/tPHL ≤ 4.6 ns (−40 °C to +85 °C), while enable/disable transitions (tPZH/tPLZ) remain ≤ 7.5 ns. Input clamping voltage (VIK) reaches −1.2 V, and OFF-state output leakage (IOZ) stays ≤ ±50 µA at 5.5 V - critical for robust bus contention management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL/CMOS systems without level-shifting. |
| Output Drive | +64 mA sink / −32 mA source - supports heavy capacitive bus loads and drives multiple TTL inputs reliably. |
| Propagation Delay | ≤ 4.6 ns (An↔Bn) - enables sub-200 MHz bus operation with deterministic timing margins. |
| Enable Timing | tPZH/tPLZ ≤ 7.5 ns - guarantees fast bus arbitration and rapid isolation during state transitions. |
| ESD Protection | HBM > 2000 V, MM > 200 V - meets IEC 61000-4-2 system-level robustness requirements. |
| Latch-up Immunity | > 500 mA per JESD78B Class II Level A - prevents destructive latch-up under transient overvoltage conditions. |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial control, telecom infrastructure, and embedded computing environments. |
Pinout & Package
TSSOP20 package (SOT360-1): plastic thin shrink small outline, 20 leads, 4.4 mm body width, 0.65 mm pitch, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OEAB) | Active-HIGH output enable | Enables A→B data flow when HIGH; disables all outputs to high-impedance when LOW. |
| 2–9 (A0–A7) | Bidirectional data port A | Connects to source bus; functions as input or output depending on OEAB/OEBA states. |
| 10 (GND) | Ground reference | Primary 0 V return path for logic and output current; must be low-inductance for noise control. |
| 11–18 (B0–B7) | Bidirectional data port B | Connects to destination bus; mirrors A-port behavior with direction controlled by enables. |
| 19 (OEBA) | Active-LOW output enable | Enables B→A data flow when LOW; asserts high-impedance on both ports when HIGH. |
| 20 (VCC) | Positive supply | 5 V nominal supply; requires local 100 nF ceramic decoupling adjacent to pin 20. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable control | OEAB (active HIGH) and OEBA (active LOW) allow asymmetric timing control and simultaneous bus latching. |
| Power-up 3-state | Outputs remain in high-impedance during power ramp-up, preventing bus contention at system startup. |
| High-current 3-state outputs | ±32 mA/±64 mA drive capability maintains signal integrity across 15 pF+ bus capacitance. |
| Bus-isolation integrity | IOZ ≤ ±50 µA at 5.5 V ensures <1 mV leakage-induced offset on isolated buses. |
| Robust ESD/latch-up protection | HBM >2000 V and >500 mA latch-up immunity eliminate need for external protection in most industrial layouts. |
Applications
| Industrial PLC Backplane Interface | Legacy Bus Bridge (ISA/PCI-X) |
|---|---|
Use Scenario: Bidirectional data exchange between CPU module and I/O expansion slots in programmable logic controllers. IC Role / Device Role / Timing Role: Octal transceiver managing address/data multiplexing with precise enable-controlled direction switching. Use Value: Dual enable logic eliminates external glue logic; 4.6 ns propagation delay supports 50 MHz backplane clocking. |
Use Scenario: Interfacing legacy 8-bit ISA peripherals to modern PCI-X bridge controllers requiring voltage-level and timing translation. IC Role / Device Role / Timing Role: Level-tolerant bidirectional buffer isolating mismatched bus domains while preserving signal integrity. Use Value: ±64 mA drive sustains signal edges across long traces; power-up 3-state prevents boot-time bus conflicts. |
| Telecom Line Card Data Mux | Test Equipment Signal Routing |
Use Scenario: Dynamic routing of configuration data between DSP cores and FPGA-based framer ICs on telecom line cards. IC Role / Device Role / Timing Role: Low-latency bus switch enabling real-time reconfiguration without interrupting active traffic paths. Use Value: 7.5 ns enable/disable time allows sub-100 ns bus arbitration; TSSOP20 footprint saves PCB area in dense modules. |
Use Scenario: Automated test system switching DUT signals between multiple measurement instruments (oscilloscopes, logic analyzers). IC Role / Device Role / Timing Role: Electrically isolated bidirectional channel selector with guaranteed high-Z state during reconfiguration. Use Value: IOZ ≤ ±50 µA ensures no signal bleed between channels; latch-up immunity protects against probe misconnect events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT245DBR | Single-directional 8-bit transceiver with single active-LOW OE; no dual-enable latching mode. | Lacks simultaneous A/B bus retention capability; requires external logic for bidirectional control. | Select when only unidirectional data flow is needed and board space allows discrete OE gating. |
| 74LVT245PW,118 | Lower drive (±32 mA only); 3.3 V supply only; no power-up 3-state guarantee. | Not suitable for 5 V mixed-voltage systems; higher susceptibility to bus contention at power-on. | Choose only for 3.3 V-only designs where cost is prioritized over robustness and voltage flexibility. |
Compared with SN74ABT245DBR and 74LVT245PW,118, the 74ABT623PW,112 uniquely provides dual-enable latching, 5 V operation, and guaranteed power-up 3-state - making it the only option for fail-safe bidirectional bus isolation in industrial 5 V systems.
Availability
74ABT623PW,112 is available at Aetrix Electronics and suitable for industrial PLC backplanes, telecom line card data muxing, legacy bus bridging, and automated test equipment signal routing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74ABT623PW,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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with core expertise in high-performance logic and interface ICs.
The 74ABT series targets high-speed, robust bus interfacing in industrial and telecom infrastructure, emphasizing low-latency propagation, strong drive strength, and enhanced reliability under electrical stress.
FAQ
What is the function of OEAB and OEBA on the 74ABT623PW,112?
The 74ABT623PW,112 uses OEAB (pin 1, active HIGH) to enable data flow from port A to port B, and OEBA (pin 19, active LOW) to enable flow from port B to port A. When both are asserted (OEAB = HIGH, OEBA = LOW), the device enters transparent latching mode - holding prior bus states even if external drivers go high-Z. This behavior is explicitly defined in Table 3 of the NXP datasheet.
Does the 74ABT623PW,112 support 3.3 V operation?
No, the 74ABT623PW,112 is specified only for 4.5 V to 5.5 V supply operation per Table 5 (Recommended Operating Conditions). Attempting 3.3 V operation violates the minimum VCC requirement and will result in undefined logic levels, increased propagation delay, and potential failure to meet VOL/VOH specifications. For 3.3 V systems, consider the 74LVT245PW,118 instead.
Is the 74ABT623PW,112 pin-compatible with other 74ABT623 variants like 74ABT623D or 74ABT623DB?
Yes - all 74ABT623 variants (SO20, SSOP20, TSSOP20) share identical pin numbering and electrical functionality per Figures 4–5 and Table 2. The 74ABT623PW,112 (TSSOP20) matches the 74ABT623D (SO20) and 74ABT623DB (SSOP20) in pinout, signal assignment, and timing behavior, differing only in package mechanical dimensions and thermal characteristics.
What is the maximum capacitive load the 74ABT623PW,112 can drive reliably?
The 74ABT623PW,112 is characterized up to 50 pF load capacitance (Table 9, Figure 9), with propagation delays measured at CL = 50 pF. While higher capacitance may be driven due to its ±64 mA output strength, signal integrity degrades beyond this point - rise/fall times increase, and timing margins shrink. For >50 pF buses, add series termination or reduce trace length to maintain sub-5 ns delay consistency.
How does the power-up 3-state feature work on the 74ABT623PW,112?
During power-up, the 74ABT623PW,112 guarantees all outputs remain in high-impedance until VCC exceeds 2.0 V and stabilizes, as verified in Table 6 (IO(pu/pd) parameter). This prevents bus contention when multiple devices power up asynchronously - a critical requirement in modular backplane systems where the 74ABT623PW,112 is commonly deployed.
74ABT623PW,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:
- Transceiver, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- 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
74ABT623PW,112 FAQ
1.How can I place an order for 74ABT623PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT623PW,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 74ABT623PW,112 reliable?
The price and inventory of 74ABT623PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT623PW,112 is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT623PW,112 transactions.
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4.How is shipping managed for 74ABT623PW,112?
74ABT623PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT623PW,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 74ABT623PW,112?
For technical support, including 74ABT623PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT623PW,112 requirements.
6.How does Aetrix verify that 74ABT623PW,112 is sourced from the original manufacturer or authorized distributors?
All 74ABT623PW,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 74ABT623PW,112 meets industry standards.
7.What is the process for return or replacement of 74ABT623PW,112?
All 74ABT623PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT623PW,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 74ABT623PW,112 part is unused and in its original packaging.
Return procedure for 74ABT623PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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