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NXP Semiconductors N74F534D,602
- Part No.:
- N74F534D,602
- Manufacturer:
- NXP Semiconductors
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
N74F534D,602.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:940
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Product details
Overview
N74F534D,602 from Philips Semiconductors is an octal D flip-flop with inverting 3-state outputs, designed as a positive-edge-triggered 8-bit register for bus interface and data latching in TTL-compatible digital systems. It operates at 5 V, supports 165 MHz maximum clock frequency, delivers ±24 mA output drive, and features independent clock (CP) and output enable (OE) control for concurrent register update and bus isolation.
For engineers reviewing the N74F534D,602 datasheet, N74F534D,602 pinout, N74F534D,602 application, or N74F534D,602 equivalent, key selection criteria include its inverting 3-state output architecture, 2.5 ns minimum clock pulse width, 2.0 ns output enable/disable timing, 0 ns hold time, and compatibility with heavily loaded TTL/CMOS buses in industrial control and legacy computing systems.
Technical Context
The N74F534D,602 implements two functionally decoupled sections: an edge-triggered register array capturing D0–D7 on the rising CP edge, and a separate 3-state output buffer bank controlled by active-low OE. Its logic diagram confirms full independence-OE asserts high-impedance outputs regardless of register state or clock activity.
This device adheres to FAST TTL electrical standards: input thresholds are VIH ≥ 2.0 V and VIL ≤ 0.8 V; output drive is asymmetric (IOH = –3 mA, IOL = 24 mA); and AC performance is specified under CL = 50 pF, RL = 500 Ω load conditions across 0°C to +70°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74F FAST TTL - ensures compatibility with 74LS/74AS systems and higher speed than standard TTL |
| Max Clock Frequency | 165 MHz - enables high-speed data capture in real-time control and memory address latching |
| Output Drive | 24 mA sink / 3 mA source - sufficient to drive 150-unit-load buses or interface directly with MOS memories |
| Propagation Delay | 4.5 ns (CP to Q) - supports sub-5 ns timing-critical paths in synchronous logic design |
| Setup Time | 2.5 ns - defines minimum D-input stability window before CP rising edge for reliable sampling |
| 3-State Enable/Disable | 2.0–8.5 ns - guarantees fast bus arbitration and prevents contention during multi-master operation |
| Supply Voltage Range | 4.5 V to 5.5 V - accommodates nominal 5 V rails with ±10% tolerance common in industrial power supplies |
Pinout & Package
Package: 20-pin plastic small outline (SO20), SOT163-1, body width 7.5 mm, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE (active low) | Global 3-state enable - drives all Q0–Q7 into high-Z when high; no effect on internal register state |
| 2–9 | Q0–Q7 (inverting) | Inverted latched outputs - Qn = NOT(Dn) after CP edge; outputs reflect register content only when OE is low |
| 10 | GND | Power ground reference - shared return path for all inputs, outputs, and internal logic |
| 11–18 | D0–D7 | Data inputs - sampled on rising CP edge; unaffected by OE status |
| 19 | CP | Clock input - positive-edge-triggered; initiates register update only; no effect on output buffers |
| 20 | VCC | Positive supply - must be 4.5–5.5 V; powers both register and output buffer sections |
Key Features
| Feature | Design Value |
|---|---|
| Independent register and buffer control | Enables simultaneous data capture (via CP) and bus release (via OE), critical for pipelined bus protocols |
| Inverting 3-state outputs | Provides polarity inversion at output stage while retaining high-Z capability - simplifies logic-level translation without external inverters |
| Low 0 ns hold time | Eliminates need for data hold circuitry - D inputs may change immediately after CP edge without corruption |
| Asymmetric output drive (24 mA sink) | Optimized for driving capacitive bus loads typical in memory and peripheral interfaces where sinking current dominates |
| FAST TTL compatibility | Guarantees interoperability with existing 74F/74AS designs and allows drop-in replacement in legacy board layouts |
Applications
| Industrial PLC Backplane Interface | Legacy Computer Address Latch |
|---|---|
Use Scenario: Isolating and latching I/O module addresses on a 20-bit parallel backplane with multiple masters and shared data lines. IC Role / Device Role / Timing Role: N74F534D,602 acts as an address latch with 3-state output control, enabling one master to drive the bus while others tri-state their outputs. Use Value: Its 2.0 ns output enable time and 24 mA sink capability prevent bus contention and ensure clean signal transitions across long traces. | Use Scenario: Capturing and holding 8-bit segment offset addresses in x86-based industrial controllers using ISA-style bus architecture. IC Role / Device Role / Timing Role: N74F534D,602 serves as a synchronized address register, triggered by CPU ALE or similar strobe, with outputs gated by bus controller OE. Use Value: The 0 ns hold time eliminates external delay elements, and inverting outputs match expected bus polarity in many legacy BIOS implementations. |
| MOS Memory Data Bus Interface | Digital Test Equipment Pattern Generator |
Use Scenario: Driving bidirectional data lines between microcontroller and 8-bit parallel EEPROM or SRAM chips requiring strict timing and high fan-out. IC Role / Device Role / Timing Role: N74F534D,602 functions as a level-shifting, latched bus driver - buffering MCU outputs while providing 3-state isolation during memory read cycles. Use Value: Its 150-unit-load high-level fan-out and 40-unit-load low-level fan-out support direct connection to multiple memory devices without buffers. | Use Scenario: Generating precise, synchronized 8-bit stimulus patterns for IC functional testing, where deterministic timing and glitch-free output transitions are mandatory. IC Role / Device Role / Timing Role: N74F534D,602 operates as a pattern register clocked by test sequencer, with OE used to blank outputs during setup phases. Use Value: Sub-5 ns propagation delay and 2.5 ns minimum pulse width allow generation of >135 MHz test vectors with verified setup/hold margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D flip-flop with 3-state inverting output applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74F534N | Dual-in-line package (DIP20, SOT146-1); identical AC/DC specs and pinout | Suitable for through-hole prototyping or legacy repair; lacks SO20 thermal and density advantages | Select when manual soldering, breadboarding, or socket-based field replacement is required |
| 74ACT534PC | Advanced CMOS (ACT) family; 5 V tolerant, lower ICC (20 mA typ), but slower max fCLK (125 MHz) | Better noise immunity and reduced power, but insufficient for >135 MHz timing-critical paths | Select when system prioritizes power efficiency and noise margin over peak speed in mixed-voltage environments |
Compared with SN74F534N and 74ACT534PC, the N74F534D,602 offers superior high-frequency bus driving in compact SO20 packaging, making it optimal for space-constrained industrial controllers where 165 MHz operation and 24 mA sink drive are essential.
Availability
N74F534D,602 is available at Aetrix Electronics and suitable for industrial PLC backplanes, legacy computer address latching, and MOS memory bus interfacing requiring stable component supply across extended production lifecycles.
Supply support for N74F534D,602 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
Philips Semiconductors (now NXP Semiconductors) is a global semiconductor innovator with leadership in logic, analog, and automotive ICs, founded in the Netherlands and historically instrumental in defining TTL and FAST logic standards.
The 74F logic family-including N74F534D,602-was engineered for high-speed, low-power digital systems in telecommunications, industrial automation, and computing infrastructure where reliability under temperature variation and bus loading was critical.
FAQ
What is the operating temperature range for the N74F534D,602?
The N74F534D,602 is rated for commercial operation from 0°C to +70°C ambient temperature. This range is defined in the Recommended Operating Conditions section of the Philips specification and applies to all DC and AC parameters unless otherwise noted. The device's performance-including 165 MHz maximum clock frequency and 24 mA output drive-is guaranteed across this full range when powered at 4.5 V to 5.5 V.
Does the N74F534D,602 have non-inverting or inverting outputs?
The N74F534D,602 has inverting outputs: Qn = NOT(Dn) after the rising clock edge. This is explicitly stated in the product title ("Octal D flip-flop, inverting (3-State)") and confirmed in the Function Table and Logic Diagram. The inversion occurs at the output stage, independent of the 3-state control-when OE is low, inverted data appears; when OE is high, outputs go high-impedance regardless of register content.
Can the N74F534D,602 be used with 3.3 V logic systems?
No, the N74F534D,602 is not 3.3 V compatible. It requires VCC = 4.5 V to 5.5 V and specifies input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and output levels (VOH ≥ 2.4 V, VOL ≤ 0.5 V) optimized for 5 V TTL operation. Driving its inputs from 3.3 V logic may result in marginal or unreliable switching, and powering it at 3.3 V violates Absolute Maximum Ratings and will cause functional failure.
What is the meaning of "3-State" in the N74F534D,602 description?
"3-State" refers to the tri-state output capability of the N74F534D,602: each Q output can assume one of three states-logic HIGH, logic LOW, or high-impedance (Hi-Z). The active-low OE pin controls all eight outputs simultaneously. When OE is low, outputs drive HIGH/LOW based on latched data; when OE is high, outputs disconnect electrically from the bus, preventing loading or contention-essential for shared-bus architectures like memory or I/O backplanes.
Is the N74F534D,602 pin-compatible with other 74F-series octal latches?
Yes, the N74F534D,602 is pin-compatible with other 74F534 variants including SN74F534N (DIP20) and 74F534PC (PLCC), sharing identical pin configuration per SOT163-1: OE at pin 1, Q0–Q7 at pins 2–9, GND at pin 10, D0–D7 at pins 11–18, CP at pin 19, and VCC at pin 20. This allows direct substitution across package types without PCB redesign.
N74F534D,602 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74F
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- 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:
- 165 MHz
- Max Propagation Delay @ V, Max CL:
- 7ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 3mA, 24mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 86 mA
- Input Capacitance:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
N74F534D,602 FAQ
1.How can I place an order for N74F534D,602 through Aetrix?
Please submit a Request for Quotation (RFQ) for N74F534D,602 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 N74F534D,602 reliable?
The price and inventory of N74F534D,602 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for N74F534D,602 is usually 5 days.
3.What payment methods are accepted for N74F534D,602?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for N74F534D,602 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for N74F534D,602?
N74F534D,602 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your N74F534D,602 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 N74F534D,602?
For technical support, including N74F534D,602 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your N74F534D,602 requirements.
6.How does Aetrix verify that N74F534D,602 is sourced from the original manufacturer or authorized distributors?
All N74F534D,602 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 N74F534D,602 meets industry standards.
7.What is the process for return or replacement of N74F534D,602?
All N74F534D,602 units undergo pre-shipment inspection (PSI). If there is an issue with N74F534D,602, 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 N74F534D,602 part is unused and in its original packaging.
Return procedure for N74F534D,602:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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