My Inquiry
My Account
Texas Instruments SN74F534AN
- Part No.:
- SN74F534AN
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
SN74F534AN.pdf
- Description:
- BUS DRIVER
- Quantity:
- Payment:
- Shipping:
Inventory:1,247
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74F534AN from Texas Instruments is an 8-bit inverting D-type flip-flop with 3-state outputs, edge-triggered on the positive clock transition, operating at 0°C to 70°C, with 70 MHz max clock frequency and 24 mA low-level output drive-used for bidirectional bus driving and I/O port buffering in TTL-based digital systems.
For engineers reviewing the SN74F534AN datasheet, SN74F534AN pinout, SN74F534AN application, or SN74F534AN equivalent, key selection criteria include its inverted Q outputs, buffered OE control, high-impedance bus isolation, and compatibility with standard 5-V TTL logic families and PCB layouts using 20-pin PDIP packages.
Technical Context
The SN74F534AN implements eight independent edge-triggered D-type flip-flops with complemented (inverted) Q outputs, synchronized to the rising edge of CLK. Its output enable (OE) is buffered and does not affect internal state retention-allowing data latching while outputs remain tri-stated.
It operates strictly within 4.5 V–5.5 V VCC, meets TTL input thresholds (VIH ≥ 2 V, VIL ≤ 0.8 V), and delivers VOH ≥ 2.4 V at IOH = −3 mA and VOL ≤ 0.35 V at IOL = 24 mA-ensuring robust noise margin and load-driving capability in legacy bus architectures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | F-series TTL - compatible with standard 5-V TTL input/output levels and timing budgets |
| Function | 8-bit inverting D-type flip-flop with 3-state outputs - stores and inverts input data on CLK↑, enables bus sharing via OE |
| Max Clock Frequency | 70 MHz at VCC = 4.5–5.5 V, TA = 0°C to 70°C - supports high-speed synchronous data latching in backplane and control bus applications |
| Output Drive | 24 mA sink / 3 mA source - sufficient to drive 50-pF loads and multiple TTL inputs without external buffers |
| Propagation Delay | tPLH/tPHL ≤ 7.5 ns (CLK to Q), tPZL/tPHZ ≤ 8.5 ns (OE to Q) - ensures tight timing alignment in pipelined register stages |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded and industrial control equipment |
| Package | 20-pin plastic DIP (N package) - through-hole mount compatible with legacy prototyping, repair, and MIL-STD-202 test fixtures |
Pinout & Package
SN74F534AN is supplied in a 20-pin plastic dual in-line package (PDIP), designated "N" by Texas Instruments, with 0.3-inch body width and standard through-hole pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE (Active-Low Output Enable) | Buffered control input; when low, enables normal Q/Q̅ outputs; when high, forces all Q outputs into high-impedance state |
| 2–9, 11–18 | D1–D8, Q1–Q8 | Data inputs and inverted outputs (Q1 = NOT D1, etc.); arranged for byte-wide parallel connection to data buses |
| 10 | GND | Ground reference for logic and power return path |
| 20 | VCC | +5 V supply rail - must be decoupled locally to suppress switching noise from 8 concurrent output transitions |
| 19 | CLK | Common clock input - rising-edge sensitive; all 8 flip-flops latch D-inputs simultaneously on CLK↑ |
Key Features
| Feature | Design Value |
|---|---|
| Inverting 3-State Outputs | Q outputs reflect logical complement of D inputs, and enter high-Z when OE is high-enabling direct connection to shared data buses without external inverters or bus transceivers |
| Buffered OE Input | OE signal is internally buffered to reject noise and ensure clean, simultaneous output disable across all 8 channels-critical for glitch-free bus arbitration |
| Retentive Operation Under OE High | Internal flip-flop states remain unchanged during OE assertion-allowing background data updates or hold-time compliance while bus is released |
| TTL-Compatible Timing Margins | Setup/hold times as low as 2 ns and propagation delays ≤7.5 ns meet stringent requirements of fast 5-V TTL system clocks and synchronous FIFO interfaces |
| Robust Absolute Ratings | Withstands −0.5 V to 7 V VCC and −1.2 V to 7 V input voltage (with current limiting), supporting hot-swap and mixed-voltage interface scenarios |
Applications
| Microprocessor Bus Interface | I/O Port Expansion |
|---|---|
Use Scenario: Interfacing an 8-bit microcontroller data bus to peripheral memory or parallel devices with strict timing and direction control. IC Role / Device Role / Timing Role: Acts as a bidirectional, level-translating bus latch-holding address/data during wait states and isolating peripherals when inactive. Use Value: Eliminates need for separate direction-control logic and pull-up resistors; inverted outputs align with common peripheral active-low signaling conventions. |
Use Scenario: Expanding GPIO count on legacy 8-bit controllers (e.g., 8051, Z80) for LED arrays, keypad scanning, or sensor readout. IC Role / Device Role / Timing Role: Functions as an output-hold register with tri-state capability-driving LEDs directly while allowing shared bus access for configuration reads. Use Value: Delivers 24 mA per output to drive LEDs without external drivers; OE-controlled isolation prevents contention during firmware reconfiguration. |
| Backplane Data Latching | Legacy Industrial Control Register |
Use Scenario: Capturing and holding status signals across modular rack-mounted PLC I/O modules connected via parallel backplane. IC Role / Device Role / Timing Role: Serves as a synchronized input capture latch-sampling distributed sensor data on a common clock edge and presenting it coherently to the master controller. Use Value: Simultaneous 8-bit edge-triggered capture ensures deterministic sampling; high-impedance outputs prevent backplane loading during idle cycles. |
Use Scenario: Storing setpoint or configuration values in electromechanical control panels where EEPROM writes are infrequent but volatile RAM is required for runtime updates. IC Role / Device Role / Timing Role: Provides non-volatile write-once register functionality-data loaded once at power-up and held until next reset or update cycle. Use Value: Inverted outputs simplify integration with discrete transistor-based relay drivers; 70°C rating supports operation inside enclosed industrial enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit inverting latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74F374N | Identical pinout and timing, but non-inverting outputs (Q = D) | Requires external inversion for active-low peripheral interfaces; otherwise drop-in for non-inverted bus roles | Select SN74F374N only when system logic expects true (non-inverted) Q outputs-no change to PCB layout needed |
| SN74LS574N | Lower speed (30 MHz max), higher propagation delay (15 ns), and reduced drive (8 mA sink), but identical 20-pin PDIP footprint | Suitable for cost-sensitive, lower-speed designs where F-series speed and drive are unnecessary | Choose SN74LS574N for legacy LS-TTL systems prioritizing power efficiency over performance; verify timing margins with slower clock edges |
Compared with SN74F374N and SN74LS574N, the SN74F534AN uniquely combines inverted outputs, 70 MHz operation, and 24 mA drive in a standard PDIP-making it optimal for high-integrity, active-low bus systems requiring minimal external components and maximum timing headroom.
Availability
SN74F534AN is available at Aetrix Electronics and suitable for microprocessor bus interface, I/O port expansion, and legacy industrial control register applications requiring stable component supply and long-term obsolescence management.
Supply support for SN74F534AN 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 founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74F534AN belongs to TI's F-series TTL logic family-designed specifically for high-speed, high-drive digital interfacing in mission-critical commercial and industrial systems where reliability and timing precision are essential.
FAQ
What is the function of the OE pin on the SN74F534AN?
The OE (output enable) pin on the SN74F534AN is an active-low buffered control input that places all eight Q outputs into either normal logic states (when OE is low) or high-impedance (tri-state) mode (when OE is high). Critically, OE has no effect on internal flip-flop operation-data can be latched or retained regardless of OE state. This allows the SN74F534AN to buffer data while dynamically releasing the bus, making it ideal for shared-data-path architectures.
Does the SN74F534AN have inverted or non-inverted outputs?
The SN74F534AN features inverted outputs: each Q output reflects the logical complement of its corresponding D input (i.e., Q1 = NOT D1). This distinguishes it from the functionally similar SN74F374AN, which provides true (non-inverted) outputs. The inversion is inherent to the device's architecture and is confirmed in the function table, logic diagram, and product description of the SN74F534AN datasheet.
What is the maximum clock frequency supported by the SN74F534AN?
The SN74F534AN supports a maximum clock frequency of 70 MHz under recommended operating conditions (VCC = 4.5 V to 5.5 V, TA = 0°C to 70°C). This value is specified in the "Timing Requirements" table of the official datasheet and validated across process, voltage, and temperature corners. It exceeds the 60 MHz rating of the military-grade SN54F534A, reflecting commercial-grade speed binning.
Can the SN74F534AN operate with a 3.3-V supply?
No, the SN74F534AN is not rated for 3.3-V operation. Its absolute maximum VCC is 7 V, but its recommended operating range is strictly 4.5 V to 5.5 V. Electrical characteristics-including VIH, VOL, and propagation delay-are only guaranteed within this 5-V TTL window. Using 3.3 V will result in undefined logic thresholds, marginal noise immunity, and potential failure to meet timing specs. For 3.3-V systems, consider modern alternatives like the SN74LVC574A.
What package type is used for the SN74F534AN?
The SN74F534AN uses a 20-pin plastic dual in-line package (PDIP), designated "N" by Texas Instruments. This through-hole package measures 0.3 inches wide, conforms to JEDEC MS-001 standards, and is fully compatible with manual soldering, socketing, and legacy test fixtures. It is distinct from surface-mount variants like the DW package used for the SN74F534ADW.
SN74F534AN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- -
- Type:
- -
- Output Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Clock Frequency:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Trigger Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Iq):
- -
- Input Capacitance:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
SN74F534AN FAQ
1.How can I place an order for SN74F534AN through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74F534AN 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 SN74F534AN reliable?
The price and inventory of SN74F534AN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74F534AN is usually 5 days.
3.What payment methods are accepted for SN74F534AN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74F534AN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74F534AN?
SN74F534AN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74F534AN 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 SN74F534AN?
For technical support, including SN74F534AN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74F534AN requirements.
6.How does Aetrix verify that SN74F534AN is sourced from the original manufacturer or authorized distributors?
All SN74F534AN 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 SN74F534AN meets industry standards.
7.What is the process for return or replacement of SN74F534AN?
All SN74F534AN units undergo pre-shipment inspection (PSI). If there is an issue with SN74F534AN, 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 SN74F534AN part is unused and in its original packaging.
Return procedure for SN74F534AN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74F534AN Tags
-
SN74HC74DR
Texas Instruments
-
SN74HC74PWR
Texas Instruments
-
74LVC1G74GT,115
Nexperia USA Inc.
-
SN74LVC2G74DCUR
Texas Instruments
-
CD4013BM96
Texas Instruments
-
SN74HCT273PWR
Texas Instruments
-
SN74LVC1G74DCUR
Texas Instruments
-
SN74HC574DWR
Texas Instruments
-
74LVC1G74DC,125
Nexperia USA Inc.
-
SN74HC273DWR
Texas Instruments
-
SN74HCT574DWR
Texas Instruments
-
SN74LVC1G74DCTR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
