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Texas Instruments SN74ABT534APWR
- Part No.:
- SN74ABT534APWR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74ABT534APWR.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,312
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Product details
Overview
SN74ABT534APWR from Texas Instruments is an octal edge-triggered D-type flip-flop with 3-state outputs, designed for high-drive bus interfacing in industrial and embedded systems. It operates at 5 V, delivers ±32 mA/64 mA output drive, supports 125 MHz clock frequency, and features low propagation delay (tPLH/tPHL ≤ 6.7 ns) and fast enable/disable timing (tPZH ≤ 4.2 ns). It is used in bidirectional bus drivers and I/O port buffering.
For engineers reviewing the SN74ABT534APWR datasheet, SN74ABT534APWR pinout, SN74ABT534APWR application, or SN74ABT534APWR equivalent, key selection criteria include 3-state output control timing, high-current drive capability under 5 V supply, thermal performance in TSSOP-20 package, and compatibility with TTL-level input thresholds and bus-hold-free signal integrity requirements.
Technical Context
This device implements eight independent D-type flip-flops triggered on the rising edge of CLK, each with complementary Q outputs and a shared active-low output-enable (OE) control. The internal latch structure retains stored data regardless of OE state, enabling seamless data staging during bus arbitration.
Its EPIC-IIB BiCMOS process enables rail-to-rail output swing, low ground bounce (<1 V VOLP), and latch-up immunity exceeding 500 mA per JESD-17 - critical for mixed-signal board environments where noise coupling and I/O contention are design constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures robust operation across industrial 5 V rails with ±10% tolerance. |
| Output Drive | –32 mA IOH / +64 mA IOL - drives heavy capacitive loads (e.g., >50 pF buses) without external buffers. |
| Max Clock Frequency | 125 MHz - supports high-speed synchronous data latching in memory interfaces and FIFO controllers. |
| Propagation Delay | tPLH/tPHL ≤ 6.7 ns @ CL = 50 pF - enables sub-8 ns timing margins in 100+ MHz system clocks. |
| Enable Timing | tPZH ≤ 4.2 ns, tPHZ ≤ 6.6 ns - allows rapid bus turnaround for time-multiplexed peripheral access. |
| Operating Temperature | –40°C to +85°C - qualified for extended industrial ambient conditions without derating. |
| Input Thresholds | VIH = 2.0 V, VIL = 0.8 V - compatible with standard TTL logic families and legacy microcontroller I/O. |
Pinout & Package
TSSOP-20 (PW) package: 6.5 mm × 4.4 mm body, 0.65 mm pitch, 1.2 mm max height, lead-free NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Data Inputs (D1–D8) | Asynchronous parallel data inputs synchronized to CLK↑; TTL-compatible thresholds ensure reliable capture from microcontrollers or FPGAs. |
| 9 | GND | Power return reference for all logic and output stages; dedicated pin minimizes ground bounce coupling into sensitive CLK path. |
| 10, 11, 13, 14, 15, 16, 17, 18 | Q Outputs (Q1–Q8) | Inverting outputs (Q̅) - provide true/complement pairs for differential signaling or parity generation without external inverters. |
| 12 | VCC | 5 V power supply; decoupling capacitor placement near this pin is critical to suppress switching noise affecting output stability. |
| 19 | CLK | Rising-edge clock input; low skew and tight setup/hold (tsu/th = 1.6/2.0 ns) support deterministic timing in synchronous buses. |
| 20 | OE | Active-low 3-state enable; high-impedance mode isolates outputs from bus during contention or power sequencing without pullup dependency. |
Key Features
| Feature | Design Value |
|---|---|
| High-Drive 3-State Outputs | ±32 mA/64 mA drive with <1 V ground bounce enables direct connection to 50 Ω–100 Ω transmission lines and multi-drop buses. |
| Edge-Triggered D Flip-Flops | Eight independent channels with simultaneous positive-edge sampling - eliminates metastability risk in parallel data acquisition paths. |
| BiCMOS EPIC-IIB Process | Combines CMOS input impedance with bipolar output strength, achieving 250 µA ICC in disabled state and 30 mA active ICC. |
| Robust ESD/Latch-Up Protection | 2000 V HBM ESD rating and >500 mA latch-up immunity meet MIL-STD-883 and JEDEC JESD-17 for harsh industrial deployment. |
| Bus-Friendly Output Control | OE does not affect internal storage - allows pre-loading of next data word while current outputs remain tri-stated, reducing bus arbitration latency. |
Applications
| Industrial PLC I/O Expansion | Legacy Microcontroller Bus Interface |
|---|---|
Use Scenario: Expanding GPIO count on a programmable logic controller using a parallel backplane with 8-bit data lanes and shared address strobes. IC Role / Device Role / Timing Role: Acts as a synchronized output latch and tristate buffer, capturing CPU writes on CLK↑ and releasing data onto the fieldbus only when OE is asserted. Use Value: Eliminates need for discrete level shifters or bus transceivers due to native 5 V TTL compatibility and 64 mA sink capability driving long traces. | Use Scenario: Interfacing an 8-bit microcontroller (e.g., 8051 derivative) to external SRAM or peripheral ASIC with multiplexed address/data bus. IC Role / Device Role / Timing Role: Provides registered address latching and bidirectional data buffering, with OE controlled by MEMR/MEMW signals to isolate bus during read/write cycles. Use Value: Enables clean bus separation with sub-5 ns enable/disable transitions, preventing data corruption during bus turnaround. |
| FPGA Configuration Data Latching | Test Equipment Digital Pattern Generator |
Use Scenario: Capturing configuration bitstreams from FPGA JTAG TDO or parallel programming interface before loading into flash or SRAM-based configuration memory. IC Role / Device Role / Timing Role: Serves as a high-speed, low-skew parallel register that holds stable data between FPGA clock domains and non-synchronous host controllers. Use Value: 125 MHz clock support and 1.6 ns setup time allow synchronization with high-speed configuration clocks without added pipeline stages. | Use Scenario: Generating precise digital stimulus waveforms in automated test equipment, where multiple 8-bit pattern channels must be updated simultaneously and held stable during measurement windows. IC Role / Device Role / Timing Role: Functions as a deterministic output register bank, with CLK aligned to system master clock and OE used to freeze outputs during waveform transitions. Use Value: Low propagation delay variation (≤0.8 ns between channels) ensures inter-channel skew <1 ns - critical for timing-sensitive digital stimulus accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT574APWR | Non-inverting Q outputs (vs. inverting Q̅ in SN74ABT534APWR); identical timing, drive, and package. | Suitable where true-output polarity is required for downstream logic without inversion; not drop-in for existing Q̅-dependent designs. | Select SN74ABT574APWR only if system logic relies on non-inverted outputs - no PCB change needed, but firmware/hardware may require signal polarity review. |
| SN74LVC574APWR | 3.3 V only (1.65–3.6 V), lower drive (–24/+24 mA), higher input capacitance (4.5 pF vs. 3.5 pF). | Intended for modern low-voltage systems; incompatible with 5 V buses without level translation. | Choose SN74LVC574APWR only in new 3.3 V designs prioritizing lower power; not suitable as direct replacement in 5 V industrial environments. |
Compared with SN74ABT534APWR, SN74ABT574APWR offers identical performance with true outputs - ideal for redesigns requiring polarity alignment, while SN74LVC574APWR trades voltage compatibility and drive strength for reduced static power, making it unsuitable for legacy 5 V bus loading but appropriate for portable or battery-powered 3.3 V systems.
Availability
SN74ABT534APWR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy microcontroller bus interfacing, and FPGA configuration latching requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SN74ABT534APWR 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with over 50 years of innovation in industrial-grade interface and timing products.
The ABT logic family - including SN74ABT534APWR - was engineered for high-noise industrial environments, delivering robust 5 V TTL-compatible performance with BiCMOS speed/power optimization and military-grade reliability.
FAQ
What is the maximum clock frequency supported by SN74ABT534APWR?
The SN74ABT534APWR supports a maximum clock frequency of 125 MHz under recommended operating conditions (VCC = 5 V, TA = 25°C). This specification is validated across the full industrial temperature range (–40°C to +85°C), with timing parameters including 1.6 ns setup time and 2.0 ns hold time ensuring reliable operation in high-speed synchronous systems. The SN74ABT534APWR maintains this frequency capability without derating in typical PCB layouts with proper decoupling.
Does SN74ABT534APWR have true or complement outputs?
The SN74ABT534APWR provides complement (inverting) Q̅ outputs - meaning the output state is the logical inverse of the D input sampled at the rising clock edge. This is confirmed in the function table and logic diagram of the official datasheet. For true (non-inverting) outputs, TI recommends the pin-compatible SN74ABT574APWR, which shares identical timing, drive strength, and package but delivers Q instead of Q̅.
Can SN74ABT534APWR operate at 3.3 V?
No, SN74ABT534APWR is specified only for 4.5 V to 5.5 V operation and is not guaranteed to function correctly at 3.3 V. Its input thresholds (VIH = 2.0 V, VIL = 0.8 V) and output drive characteristics are optimized for 5 V TTL compatibility. Attempting 3.3 V operation may result in marginal noise margins, reduced output swing, or failure to meet timing specs. For 3.3 V systems, consider SN74LVC574APWR instead.
What is the thermal resistance (θJA) of SN74ABT534APWR in its TSSOP-20 package?
The SN74ABT534APWR in the PW (TSSOP-20) package has a junction-to-ambient thermal resistance (θJA) of 128°C/W, as specified in the absolute maximum ratings table. This value assumes standard JEDEC test conditions (single-layer board, 1 in² copper pad). Actual thermal performance improves significantly with PCB layout enhancements such as internal ground/power planes and thermal vias - critical for sustained high-current output operation.
Is SN74ABT534APWR RoHS compliant and lead-free?
Yes, SN74ABT534APWR is RoHS compliant and features lead-free terminations with NiPdAu (nickel-palladium-gold) plating. It meets JEDEC J-STD-020 moisture sensitivity Level-1 (unlimited floor life at ≤30°C/60% RH) and is rated for peak reflow temperatures up to 260°C. The part marking "ABT534A" appears on the top surface, and full compliance documentation is available via TI's Quality & Environmental Information portal.
SN74ABT534APWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 175 MHz
- Max Propagation Delay @ V, Max CL:
- 6.7ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 250 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
SN74ABT534APWR FAQ
1.How can I place an order for SN74ABT534APWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT534APWR 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 SN74ABT534APWR reliable?
The price and inventory of SN74ABT534APWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT534APWR is usually 5 days.
3.What payment methods are accepted for SN74ABT534APWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT534APWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT534APWR?
SN74ABT534APWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT534APWR 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 SN74ABT534APWR?
For technical support, including SN74ABT534APWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT534APWR requirements.
6.How does Aetrix verify that SN74ABT534APWR is sourced from the original manufacturer or authorized distributors?
All SN74ABT534APWR 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 SN74ABT534APWR meets industry standards.
7.What is the process for return or replacement of SN74ABT534APWR?
All SN74ABT534APWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT534APWR, 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 SN74ABT534APWR part is unused and in its original packaging.
Return procedure for SN74ABT534APWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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