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NXP Semiconductors 74ABT623PW,118
- Part No.:
- 74ABT623PW,118
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74ABT623PW,118.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,386
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Product details
Overview
74ABT623PW,118 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,118 datasheet, 74ABT623PW,118 pinout, 74ABT623PW,118 application, or 74ABT623PW,118 equivalent, this page provides verified functional behavior, timing-critical enable logic, bus-isolation capability, latch-through operation, and real-world static/dynamic specifications - all confirmed for the TSSOP20 variant.
Technical Context
The 74ABT623PW,118 implements BiCMOS logic with separate directional control: OEAB (pin 1, active HIGH) enables A→B transmission, while OEBA (pin 19, active LOW) enables B→A transmission. Both enables can be simultaneously asserted to enter transparent latched mode, where outputs reinforce inputs and maintain bus state when external drivers are high-impedance.
Its dynamic performance includes 2.6 ns typical tPLH/tPHL propagation delay (A↔B), 3.4 ns typical tPZH/tPHZ enable-to-output delay, and guaranteed sub-4.6 ns max delays across full temperature range. Input transition rate is limited to 10 ns/V to ensure reliable switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 4.5 V to 5.5 V - ensures compatibility with 5 V TTL/CMOS systems and stable operation under rail tolerance. |
| Output drive | +64 mA sink / −32 mA source - supports heavy capacitive loads and drives multiple TTL inputs without buffering. |
| tPLH / tPHL | Max 4.6 ns at VCC = 5.0 V - enables high-speed bus arbitration in memory-mapped I/O and backplane applications. |
| Input leakage | ±100 µA max at −40 °C to +85 °C - guarantees low standby current and minimal bus loading during 3-state isolation. |
| ESD protection | HBM > 2000 V, MM > 200 V - meets industrial handling requirements without additional protection circuitry. |
| Power-off leakage | ±100 µA at VCC = 0 V - prevents unintended current paths during hot-swap or power sequencing events. |
| Operating temperature | −40 °C to +85 °C - qualified for industrial control, telecom infrastructure, and embedded computing environments. |
Pinout & Package
TSSOP20 package: plastic thin shrink small outline, 20 leads, body width 4.4 mm (SOT360-1), lead pitch 0.65 mm, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OEAB) | Active-HIGH output enable for A→B direction | Drives B-bus outputs when HIGH; disables them (high-Z) when LOW - used for master-side bus control. |
| 2–9 (A0–A7) | Bidirectional data terminals (A side) | Connect to local processor/data bus; function as inputs when receiving from B, outputs when transmitting to B. |
| 10 (GND) | Ground reference | Primary return path for all internal logic and output currents; must be low-inductance connection. |
| 11–18 (B0–B7) | Bidirectional data terminals (B side) | Interface with peripheral/memory bus; direction determined by OEAB/OEBA states - no internal direction register. |
| 19 (OEBA) | Active-LOW output enable for B→A direction | Enables B→A transmission when LOW; disables outputs when HIGH - allows independent control of each data path. |
| 20 (VCC) | Positive supply | 5 V nominal supply; decoupling capacitor (100 nF) required within 5 mm for noise immunity and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enables | OEAB (active HIGH) and OEBA (active LOW) allow asymmetric timing control - eliminates need for level-shifting logic on enable lines. |
| Transparent latch mode | Simultaneous assertion of OEAB=HIGH and OEBA=LOW creates self-reinforcing feedback loop - maintains bus state without external storage. |
| Power-up 3-state | Outputs remain high-impedance until VCC stabilizes above 2.0 V - prevents bus contention during power ramp-up. |
| Latch-up immunity | Exceeds 500 mA per JESD78B Class II Level A - ensures robustness against accidental ground/power shorts in dense PCB layouts. |
| Low input capacitance | 4 pF typical - minimizes signal degradation and timing skew on high-speed address/data buses. |
Applications
| Industrial Backplane Interface | Legacy System Bus Extension |
|---|---|
|
Use Scenario: Isolating CPU local bus from extended I/O backplane in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional data bridge with independent direction control; enables hot-plug-safe bus segmentation via OEAB/OEBA sequencing. Use Value: Prevents bus contention during module insertion/removal and supports deterministic timing with sub-5 ns propagation delay. |
Use Scenario: Connecting modern microcontroller peripherals to legacy ISA-style expansion slots. IC Role / Device Role / Timing Role: Voltage- and protocol-transparent bus translator; handles 5 V TTL signaling without level shifters. Use Value: Maintains signal integrity across 20 cm traces with ±64 mA drive strength and 7 pF I/O capacitance. |
| Memory-Mapped I/O Multiplexer | Configurable Data Path Switch |
|
Use Scenario: Sharing a single SRAM device between two independent processors via time-multiplexed access. IC Role / Device Role / Timing Role: Dual-directional bus switch controlled by processor-specific enable signals; supports read/write arbitration. Use Value: Eliminates need for external tristate logic or FPGA glue logic - reduces BOM count and layout area. |
Use Scenario: Reconfiguring data flow between ADC/DAC channels and DSP core in test equipment. IC Role / Device Role / Timing Role: Directionally agnostic data conduit; enables real-time path reconfiguration via GPIO-controlled OEAB/OEBA. Use Value: Achieves <10 ns path reconfiguration latency with zero hold-time violation due to matched tPLH/tPHL. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVT623PW,118 | Lower supply range (2.7–3.6 V), reduced drive (±12 mA), faster propagation (1.8 ns typ), lower power | Designed for 3.3 V systems only; incompatible with 5 V buses without level translation | Select when migrating to 3.3 V logic and lower power is critical; not drop-in for 5 V designs. |
| SN74ABT623DBR | Same electrical specs, SSOP20 package (5.3 mm width), identical pinout, higher thermal resistance (5.5 mW/K derating above 60 °C) | Compatible footprint but larger body; requires PCB land pattern adjustment and may limit board density | Choose for legacy SSOP-compatible designs; verify thermal margin in enclosed enclosures. |
Compared with 74ABT623PW,118, the 74LVT623PW,118 trades 5 V compatibility for lower voltage operation and power, while SN74ABT623DBR offers identical functionality in a physically larger package requiring layout revision - neither is pin-compatible without mechanical or electrical redesign.
Availability
74ABT623PW,118 is available at Aetrix Electronics and suitable for industrial backplane interfaces, legacy system bus extensions, and memory-mapped I/O multiplexing requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for 74ABT623PW,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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The 74ABT623PW,118 belongs to NXP's ABT-series advanced BiCMOS logic family, engineered for high-speed, low-noise bidirectional bus interfacing in industrial and telecom infrastructure where reliability and timing precision are critical.
FAQ
What is the function of OEBA on the 74ABT623PW,118?
The OEBA pin (pin 19) is an active-LOW output enable that controls data flow from the B bus to the A bus. When OEBA is LOW and OEAB is HIGH, the 74ABT623PW,118 transmits Bn to An. When both OEAB and OEBA are asserted (OEAB=HIGH, OEBA=LOW), the device enters transparent latch mode - reinforcing bus states without external clocking. This behavior is explicitly defined in Table 3 of the NXP datasheet Rev. 03.
Does the 74ABT623PW,118 support 3.3 V operation?
No, the 74ABT623PW,118 is specified only for 4.5 V to 5.5 V supply operation per Table 5 (Recommended Operating Conditions). Its VIH minimum is 2.0 V and VIL maximum is 0.8 V, but these thresholds assume VCC ≥ 4.5 V. Operation below 4.5 V violates recommended conditions and risks undefined output behavior or increased ICC, as confirmed in the Static Characteristics section.
How does the 74ABT623PW,118 handle power-up sequencing?
The 74ABT623PW,118 features power-up 3-state: outputs remain in high-impedance until VCC exceeds 2.0 V, preventing bus contention during power ramp-up. This is verified in the Features section and supported by IO(pu/pd) test data (±50 µA max at VCC = 2.0 V), ensuring safe initialization in systems with staggered rail sequencing.
Can the 74ABT623PW,118 be used for unidirectional data transfer?
Yes - the 74ABT623PW,118 supports unidirectional operation by holding one enable inactive: for A→B only, set OEAB=HIGH and OEBA=HIGH; for B→A only, set OEAB=LOW and OEBA=LOW. The Function Table (Table 3) confirms Z-state on both sides when enables oppose each other, enabling clean direction isolation without external logic.
What is the thermal derating for the TSSOP20 package of the 74ABT623PW,118?
The TSSOP20 package (SOT360-1) has a total power dissipation derating of 5.5 mW/K above +60 °C, as stated in Section 7 (Limiting Values). At +85 °C ambient, the usable Ptot is reduced from 500 mW to approximately 362.5 mW - a critical constraint for high-output-current applications in enclosed industrial enclosures.
74ABT623PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ABT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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,118 FAQ
1.How can I place an order for 74ABT623PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT623PW,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 74ABT623PW,118 reliable?
The price and inventory of 74ABT623PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT623PW,118 is usually 5 days.
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Once your 74ABT623PW,118 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,118?
For technical support, including 74ABT623PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT623PW,118 requirements.
6.How does Aetrix verify that 74ABT623PW,118 is sourced from the original manufacturer or authorized distributors?
All 74ABT623PW,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 74ABT623PW,118 meets industry standards.
7.What is the process for return or replacement of 74ABT623PW,118?
All 74ABT623PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT623PW,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 74ABT623PW,118 part is unused and in its original packaging.
Return procedure for 74ABT623PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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