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Texas Instruments SN74ABT534ANG4
- Part No.:
- SN74ABT534ANG4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
SN74ABT534ANG4.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,601
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Product details
Overview
SN74ABT534ANG4 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 4.5–5.5 V, delivers ±32-mA high-drive outputs, supports 125-MHz clock frequency, and features low ground bounce (<1 V) and latch-up immunity >500 mA per JESD-17.
For engineers reviewing the SN74ABT534ANG4 datasheet, SN74ABT534ANG4 pinout, SN74ABT534ANG4 application, or SN74ABT534ANG4 equivalent, key selection criteria include its 20-pin PDIP (N) package, 3-state output enable control, 1.6-ns data setup time, and compatibility with TTL-level logic in bidirectional bus architectures.
Technical Context
This device implements eight independent D-type flip-flops triggered on the positive clock edge, each with complementary Q outputs relative to D inputs. Its EPIC-IIB BiCMOS process enables high-speed switching (tPLH/tPHL ≤ 6.7 ns) while maintaining low power dissipation and robust ESD protection (>2000 V per MIL-STD-883).
The buffered OE input controls all eight outputs simultaneously into high-impedance state without affecting internal storage - enabling live bus arbitration and hot-swap capability. Input transition rate tolerance of 5 ns/V ensures reliable operation with fast-rising clock and data edges under capacitive loading conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V TTL and CMOS systems without level-shifting. |
| Output Drive | –32 mA IOH / +64 mA IOL - drives heavy capacitive loads (e.g., backplane buses) without external buffers. |
| Max Clock Frequency | 125 MHz - supports high-throughput data latching in real-time control and communication interfaces. |
| Setup/Hold Time | 1.6 ns tsu / 2 ns th - enables tight timing margins in synchronous designs with fast clock domains. |
| Propagation Delay | tPLH/tPHL ≤ 6.7 ns - ensures deterministic signal alignment across all eight channels at full speed. |
| 3-State Enable Delay | tPZH/tPLZ ≤ 5.8 ns - allows rapid bus release and acquisition for time-critical multiplexing applications. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade reliability in non-military embedded environments. |
Pinout & Package
SN74ABT534ANG4 uses a 20-pin plastic dual in-line package (PDIP-N), 7.62 mm pitch, 24.13 mm body length, with standard through-hole mounting and JEDEC MS-001 compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE (Output Enable) | Active-low control for simultaneous 3-state output disable; does not affect internal flip-flop state retention. |
| 2–9 | D1–D8 (Data Inputs) | Asynchronous parallel data inputs synchronized to CLK rising edge; TTL-compatible voltage thresholds. |
| 11–18 | Q1–Q8 (Complementary Outputs) | Inverted outputs relative to D inputs; high-drive capability supports direct connection to unterminated buses. |
| 10 | GND | Power ground reference for all logic and output stages; critical for minimizing ground bounce (VOLP < 1 V). |
| 20 | VCC | Positive supply rail; must be decoupled locally to sustain transient current demands during output switching. |
| 19 | CLK | Global clock input triggering all eight flip-flops on rising edge; requires clean, monotonic transitions to avoid metastability. |
Key Features
| Feature | Design Value |
|---|---|
| EPIC-IIB BiCMOS Process | Reduces dynamic power consumption by >40% vs. standard bipolar TTL while preserving speed and drive strength. |
| Latch-Up Immunity | Exceeds 500 mA per JESD-17 - eliminates risk of destructive latch-up in noisy industrial power environments. |
| Output Ground Bounce | VOLP < 1 V at VCC = 5 V - minimizes noise coupling into adjacent signals during simultaneous output switching. |
| TTL-Compatible Interface | VIH = 2 V, VIL = 0.8 V - interoperates directly with legacy 74-series and microcontroller GPIO without level translation. |
| High-Impedance State Control | OE-driven 3-state outputs isolate bus lines during contention or power sequencing - no pull-up resistors required. |
Applications
| Industrial PLC I/O Expansion | Legacy Bus Interface Adapter |
|---|---|
|
Use Scenario: Expanding digital input/output capacity in programmable logic controllers using parallel backplane buses. IC Role / Device Role / Timing Role: Acts as synchronized input latch and output driver, buffering field-side signals to CPU-side data highways. Use Value: High-drive outputs eliminate need for discrete buffer ICs; 3-state control enables shared bus arbitration between multiple I/O modules. |
Use Scenario: Bridging modern microcontrollers to legacy ISA or VMEbus peripherals requiring TTL-level timing and drive. IC Role / Device Role / Timing Role: Provides edge-aligned data capture and controlled bus release for protocol-compliant read/write cycles. Use Value: 1.6-ns setup time meets strict ISA timing budgets; OE-controlled high-Z state prevents bus contention during address decode windows. |
| Test Equipment Signal Conditioning | Embedded Data Acquisition Buffer |
|
Use Scenario: Isolating and latching sensor data streams in automated test systems before ADC sampling. IC Role / Device Role / Timing Role: Captures parallel analog-to-digital converter outputs on precise clock edges, then holds stable for processor readout. Use Value: Low propagation delay (≤6.7 ns) preserves timing correlation across multi-channel measurements; latch-up immunity ensures robustness against ESD events. |
Use Scenario: Temporarily storing burst-mode sensor readings in edge-node gateways prior to wireless transmission. IC Role / Device Role / Timing Role: Functions as a working register bank, synchronizing asynchronous sensor interrupts to system clock domain. Use Value: Retains stored data during OE assertion - allows background processing while bus remains free for other peripherals. |
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 |
|---|---|---|---|
| SN74ABT534ADWR | Same logic function and timing specs, but in SOIC-DW (20-pin) surface-mount package; RoHS-compliant NiPdAu finish. | Designed for automated SMT assembly; lacks through-hole mechanical stability for high-vibration environments. | Select SN74ABT534ADWR when board space and reflow compatibility are prioritized over serviceability or prototyping ease. |
| SN74ABT534ADBR | Identical electrical behavior, packaged in SSOP-DB (20-pin); smaller footprint (5.3 × 7.2 mm) and lower thermal resistance (θJA = 115°C/W). | Optimized for dense PCB layouts and thermally constrained enclosures; requires fine-pitch placement equipment. | Choose SN74ABT534ADBR for compact industrial controllers where thermal management and layout density outweigh hand-soldering needs. |
Compared with SN74ABT534ANG4, SN74ABT534ADWR offers identical performance in a surface-mount form ideal for volume production, while SN74ABT534ADBR provides superior thermal efficiency and space savings - both require PCB redesign but deliver identical timing, drive, and logic functionality.
Availability
SN74ABT534ANG4 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy bus interface adapters, and test equipment signal conditioning requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SN74ABT534ANG4 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 90 years of innovation in industrial, automotive, and communications markets.
SN74ABT534ANG4 belongs to TI's ABT logic family - engineered for high-speed, high-drive 5-V bus interfacing with enhanced noise immunity and latch-up robustness in harsh operating environments.
FAQ
What is the maximum clock frequency supported by SN74ABT534ANG4?
The SN74ABT534ANG4 supports a maximum clock frequency of 125 MHz under recommended operating conditions (VCC = 5 V, TA = 25°C). This specification is guaranteed across the full industrial temperature range (–40°C to +85°C), enabling use in real-time control loops and high-speed data acquisition systems where deterministic timing is critical. The device achieves this with tPLH/tPHL ≤ 6.7 ns and minimal skew between channels.
Does SN74ABT534ANG4 require external pull-up resistors on the OE pin?
Yes - to ensure the outputs enter high-impedance state during power-up or power-down, OE should be tied to VCC via a pull-up resistor. The minimum value depends on the current-sinking capability of the driving source; TI recommends values ≥10 kΩ for typical microcontroller GPIO drivers. Leaving OE floating risks undefined output states and potential bus contention during initialization sequences of the SN74ABT534ANG4.
Can SN74ABT534ANG4 drive unterminated transmission lines directly?
Yes - the SN74ABT534ANG4 delivers ±32-mA/±64-mA output drive, allowing direct connection to moderately loaded bus structures (e.g., 50–100 pF total capacitance) without external line drivers. However, for longer traces (>10 cm) or higher-frequency operation (>50 MHz), impedance matching and termination remain necessary to prevent reflections. The SN74ABT534ANG4's low ground bounce (<1 V) helps maintain signal integrity under these conditions.
Is SN74ABT534ANG4 pin-compatible with older 74LS534 or 74F534 devices?
No - while SN74ABT534ANG4 shares functional equivalence (octal D-type flip-flop with 3-state outputs), it is not pin-compatible with 74LS534 or 74F534 due to differing pin assignments: OE is on Pin 1 (not Pin 13), and Q outputs are inverted relative to D inputs. Board-level replacement requires schematic and layout revision. Always verify pin mapping and logic polarity before substituting SN74ABT534ANG4 in legacy designs.
What is the latch-up immunity rating for SN74ABT534ANG4?
The SN74ABT534ANG4 exceeds 500 mA latch-up immunity per JEDEC Standard JESD-17, verified under worst-case stress conditions. This robustness stems from its EPIC-IIB BiCMOS fabrication process and internal guard-ring design, making it suitable for industrial applications with noisy power rails or transient voltage events. No external current-limiting components are needed to meet this specification during normal operation of the SN74ABT534ANG4.
SN74ABT534ANG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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:
- Through Hole
- Supplier Device Package:
- 20-PDIP
SN74ABT534ANG4 FAQ
1.How can I place an order for SN74ABT534ANG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT534ANG4 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 SN74ABT534ANG4 reliable?
The price and inventory of SN74ABT534ANG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT534ANG4 is usually 5 days.
3.What payment methods are accepted for SN74ABT534ANG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT534ANG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT534ANG4?
SN74ABT534ANG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT534ANG4 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 SN74ABT534ANG4?
For technical support, including SN74ABT534ANG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT534ANG4 requirements.
6.How does Aetrix verify that SN74ABT534ANG4 is sourced from the original manufacturer or authorized distributors?
All SN74ABT534ANG4 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 SN74ABT534ANG4 meets industry standards.
7.What is the process for return or replacement of SN74ABT534ANG4?
All SN74ABT534ANG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT534ANG4, 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 SN74ABT534ANG4 part is unused and in its original packaging.
Return procedure for SN74ABT534ANG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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