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Texas Instruments SN74ABT534ANSR
- Part No.:
- SN74ABT534ANSR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SN74ABT534ANSR.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,386
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Product details
Overview
SN74ABT534ANSR 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 features +5 V operation, 125 MHz max clock frequency, –32 mA/64 mA output drive, 1.6 ns data setup time, and operates from –40°C to 85°C. It serves as a bidirectional bus driver or I/O port register in memory-mapped peripheral interfaces.
For engineers reviewing the SN74ABT534ANSR datasheet, SN74ABT534ANSR pinout, SN74ABT534ANSR application, or SN74ABT534ANSR equivalent, key selection criteria include 3-state timing (tPZH/tPLZ < 5.2 ns), high-current drive capability, latch-up immunity (>500 mA), ESD robustness (>2000 V HBM), and compatibility with 5-V TTL/CMOS logic families.
Technical Context
This device implements eight independent positive-edge-triggered D flip-flops, each with complementary Q outputs enabled via a shared active-low output-enable (OE) control. Internal operation remains unaffected by OE state-data can be latched or retained while outputs are in high-impedance mode.
The SN74ABT534ANSR uses EPIC-IIB BiCMOS process technology to achieve low power dissipation while delivering high-output current. Its design targets capacitive bus loading, eliminating need for external pull-ups or interface buffers in backplane or motherboard data-path applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V TTL logic rails and tolerant of supply ripple. |
| Max Clock Frequency | 125 MHz - supports high-speed synchronous data capture in address/data multiplexed buses. |
| Output Drive | –32 mA IOH / 64 mA IOL - drives heavy capacitive loads (e.g., >50 pF traces or multiple inputs) without signal degradation. |
| Setup/Hold Time | tsu = 1.6 ns, th = 2 ns - enables tight timing margins in fast 5-V digital systems with minimal external delay compensation. |
| 3-State Enable Delay | tPZH = 1 ns (min), tPLZ = 2.6 ns (min) - ensures rapid bus release for time-critical arbitration or hot-swap scenarios. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control, PLC I/O modules, and communications equipment. |
| ESD Protection | >2000 V HBM - withstands handling and board-level electrostatic discharge during manufacturing and field service. |
Pinout & Package
SN74ABT534ANSR is packaged in a 20-pin plastic small-outline (SOIC) package (DW), 7.5 mm wide, 2.65 mm max height, with 1.27 mm pitch. Pin 1 is marked by a notch or beveled corner at the top-left corner of the package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output Enable (active low) | Controls all eight outputs simultaneously; high-impedance when high, normal logic levels when low. |
| 2–9 (1D–8D) | Data inputs | Asynchronous D inputs for each flip-flop; sampled on rising CLK edge. |
| 11 (CLK) | Clock input | Positive-edge-triggered global clock; synchronizes all eight D-to-Q transfers. |
| 12–19 (1Q–8Q) | Complementary Q outputs | Non-inverted Q outputs; each reflects corresponding D input after CLK↑, subject to OE control. |
| 10 (GND) | Ground reference | Power return path for logic and output stages; must be low-inductance connection. |
| 20 (VCC) | Supply voltage | +5 V power rail; requires local 0.1 µF ceramic decoupling adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| High-Drive Outputs | –32 mA source / 64 mA sink per output enables direct driving of unterminated 50-pF bus lines without external buffers. |
| State-of-the-Art BiCMOS | EPIC-IIB process delivers TTL-compatible speed with CMOS-level static power consumption (~0.5 µA ICC in disabled state). |
| Latch-Up Immunity | Exceeds 500 mA per JEDEC JESD-17 - prevents destructive latch-up under transient overvoltage or ground bounce conditions. |
| Low Ground Bounce | VOLP < 1 V at VCC = 5 V - minimizes noise coupling into adjacent signals during simultaneous output switching. |
| Robust ESD Protection | 2000 V HBM and 200 V machine model - reduces risk of damage during PCB assembly and system integration. |
Applications
| Industrial PLC Backplane Interface | Embedded Microcontroller I/O Expansion |
|---|---|
Use Scenario: Interfacing a microcontroller's parallel bus to modular I/O cards across a 200-mm backplane with 40-pF trace capacitance. IC Role / Device Role / Timing Role: Acts as a synchronized, 3-state output buffer registering address/data writes and enabling bidirectional data flow via OE-controlled direction switching. Use Value: Eliminates need for discrete pull-up resistors and reduces propagation delay skew vs. open-drain alternatives, improving cycle time by ≥15% in 10-MHz bus protocols. | Use Scenario: Expanding GPIO count on an ARM Cortex-M4-based motor controller where 8-bit status registers must be read without bus contention. IC Role / Device Role / Timing Role: Functions as an edge-triggered input latch capturing real-time encoder or fault signals, with OE used to isolate register contents during CPU read cycles. Use Value: Provides deterministic sampling window (1.6 ns tsu) and glitch-free read access via high-Z isolation, preventing metastability-induced firmware hangs. |
| Legacy ISA Bus Adapter | Test Equipment Digital Pattern Generator |
Use Scenario: Adapting modern FPGA logic to legacy ISA bus timing, requiring 5-V tolerant, high-current drivers for address strobes and data transceivers. IC Role / Device Role / Timing Role: Serves as a clocked bus transceiver with OE tied to ISA IOR/IOW control lines, ensuring strict compliance with ISA's 6-MHz timing envelope. Use Value: Delivers 64-mA sink current needed to meet ISA spec VOL ≤ 0.5 V under full load, avoiding marginal performance of standard 74-series buffers. | Use Scenario: Generating precise 8-bit parallel stimulus waveforms in automated test equipment, where waveform edges must align within ±2 ns across all channels. IC Role / Device Role / Timing Role: Used as a synchronized waveform register staging pattern data from SRAM, with CLK driven by a low-jitter 100-MHz source and OE controlling output enable timing. Use Value: Achieves inter-channel skew < 1.2 ns (tPLH/tPHL matching) and sub-nanosecond enable response (tPZH min = 1 ns), critical for multi-channel timing margin validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop with 3-state output applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT574ANSR | Non-inverting outputs only (Q, not Q̅); identical timing, drive, and package. | Suitable where inverted outputs are unnecessary; simplifies logic mapping in non-complementary bus designs. | Select when system logic does not require complemented outputs - reduces external inversion gates and layout complexity. |
| SN74LVC574APWR | 3.3-V only operation (1.65–3.6 V), lower drive (–24/24 mA), 1.8-V compatible inputs. | Targeted for mixed-voltage 3.3-V systems; not interoperable with 5-V buses without level translation. | Choose for new 3.3-V designs prioritizing lower power and smaller SSOP-20 footprint; avoid for 5-V legacy interface replacement. |
Compared with SN74ABT534ANSR, SN74ABT574ANSR offers functional equivalence minus output inversion - ideal for simplified bus drivers - while SN74LVC574APWR trades 5-V compatibility for lower voltage operation and reduced drive, making it unsuitable as a drop-in replacement but viable in green-field 3.3-V applications.
Availability
SN74ABT534ANSR is available at Aetrix Electronics and suitable for industrial automation, embedded test instrumentation, and legacy bus interface designs requiring stable component supply, long-term obsolescence management, and RoHS-compliant 5-V logic support.
Supply support for SN74ABT534ANSR 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 U.S.-based semiconductor company specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74ABT534ANSR belongs to TI's ABT logic family, engineered for high-speed, high-drive 5-V bus interfacing in noise-sensitive environments where signal integrity and latch-up immunity are critical.
FAQ
What is the maximum clock frequency supported by SN74ABT534ANSR?
The SN74ABT534ANSR supports a maximum clock frequency of 125 MHz under recommended operating conditions (VCC = 5 V, TA = 25°C). This rating is validated across the full industrial temperature range (–40°C to 85°C), with timing parameters including 3.5 ns minimum pulse width and 1.6 ns setup time ensuring reliable operation in high-speed synchronous systems. The SN74ABT534ANSR maintains this performance without derating in typical PCB layouts with proper decoupling.
Does SN74ABT534ANSR support 3.3-V input logic levels?
No, SN74ABT534ANSR is a 5-V-only device with TTL-compatible input thresholds (VIH = 2 V min, VIL = 0.8 V max) and requires VCC = 4.5–5.5 V. It does not guarantee correct operation with 3.3-V logic signals unless level-shifted. For mixed-voltage systems, TI recommends pairing SN74ABT534ANSR with dedicated translators like SN74AVC4T245, or selecting 3.3-V alternatives such as SN74LVC574A for native compatibility.
How is the output-enable (OE) pin used in SN74ABT534ANSR?
The OE pin on SN74ABT534ANSR is an active-low control that places all eight Q outputs in high-impedance state when asserted high, and enables normal logic-level outputs when pulled low. Critically, OE has no effect on internal flip-flop operation - data can be latched on CLK↑ or held unchanged regardless of OE state. To ensure safe high-Z during power-up, TI recommends tying OE to VCC via a pullup resistor (value determined by driver sink capability).
What package type is SN74ABT534ANSR supplied in?
SN74ABT534ANSR is supplied in a 20-pin plastic small-outline integrated circuit (SOIC) package designated as DW, measuring 7.5 mm wide and 2.65 mm maximum height, with 1.27 mm lead pitch. This RoHS-compliant, surface-mount package is optimized for automated assembly and meets JEDEC MS-013 standards. The part marking "ABT534A" appears on the top surface, and pin 1 is identified by a beveled corner or notch.
Is SN74ABT534ANSR suitable for use in automotive applications?
SN74ABT534ANSR is not AEC-Q100 qualified and is specified only for industrial temperature range (–40°C to 85°C), making it unsuitable for under-hood automotive applications. While its latch-up immunity (>500 mA) and ESD robustness (>2000 V HBM) exceed many consumer-grade devices, TI does not certify SN74ABT534ANSR for automotive use. For automotive-grade equivalents, consider AEC-Q100 qualified variants such as SN74ABT534AQDRQ1, which undergo extended reliability testing and operate across –40°C to 125°C.
SN74ABT534ANSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 20-SOIC (0.209", 5.30mm 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-SO
SN74ABT534ANSR FAQ
1.How can I place an order for SN74ABT534ANSR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT534ANSR 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 SN74ABT534ANSR reliable?
The price and inventory of SN74ABT534ANSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT534ANSR is usually 5 days.
3.What payment methods are accepted for SN74ABT534ANSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT534ANSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT534ANSR?
SN74ABT534ANSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT534ANSR 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 SN74ABT534ANSR?
For technical support, including SN74ABT534ANSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT534ANSR requirements.
6.How does Aetrix verify that SN74ABT534ANSR is sourced from the original manufacturer or authorized distributors?
All SN74ABT534ANSR 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 SN74ABT534ANSR meets industry standards.
7.What is the process for return or replacement of SN74ABT534ANSR?
All SN74ABT534ANSR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT534ANSR, 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 SN74ABT534ANSR part is unused and in its original packaging.
Return procedure for SN74ABT534ANSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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