My Inquiry
My Account
NXP Semiconductors N74F245D,602
- Part No.:
- N74F245D,602
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
N74F245D,602.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,366
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
N74F245D,602 from Nexperia is an octal bidirectional 3-state transceiver IC used for bus interface isolation and data direction control between two 8-bit parallel buses. It features non-inverting outputs, 4.0 ns typical propagation delay, ±5 V supply operation, and B-port output drive capability of 64 mA sink / 15 mA source - enabling robust capacitive loading in industrial backplane and memory expansion applications.
For engineers reviewing the N74F245D,602 datasheet, N74F245D,602 pinout, N74F245D,602 application, or N74F245D,602 equivalent, key selection criteria include bidirectional bus timing (tPLH/tPHL ≤ 6.0 ns), 3-state enable/disable timing (tPZH/tPHZ ≤ 8.0 ns), high-current B-port drive, and compatibility with FAST TTL logic families in commercial-temperature systems.
Technical Context
The N74F245D,602 implements a dual-bus transceiver architecture with independent Transmit/Receive (T/R) direction control and Output Enable (OE) active-low gating. Its internal logic ensures simultaneous 3-state disable across all eight A- and B-port lines when OE is high, preventing bus contention during power sequencing or standby.
It operates strictly within FAST TTL electrical standards: input thresholds (VIH = 2.0 V, VIL = 0.8 V), output voltage levels (VOH ≥ 2.7 V at IOH = –3 mA, VOL ≤ 0.50 V at IOL = 24 mA on A-port and ≤ 0.55 V at 64 mA on B-port), and load unit compatibility (B-port = 750/106.7 U.L. HIGH/LOW).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - supports standard 5 V TTL rail with ±10% tolerance; no regulation required. |
| Propagation Delay (An→Bn) | 4.0 ns typical - enables sub-250 MHz bus clocking in synchronous data transfer paths. |
| B-port Sink Current | 64 mA - drives heavy capacitive loads (e.g., >100 pF traces or multiple TTL inputs) without signal degradation. |
| A-port Source Current | 15 mA - sufficient for driving standard TTL fan-out (up to 10 LS-TTL loads). |
| 3-State Enable Time | 2.0–8.0 ns - ensures fast bus arbitration and prevents glitches during dynamic direction switching. |
| Operating Temperature | 0 °C to +70 °C - validated for commercial-grade embedded control and computing equipment. |
| Input Loading (B-port) | 750/106.7 FAST unit loads HIGH/LOW - defines maximum parallel fan-out without signal integrity loss. |
Pinout & Package
Package: Plastic small outline package (SO20), 20-pin, 7.5 mm body width, RoHS-compliant (SOT163-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (T/R) | Transmit/Receive control input | Low = B→A data flow; High = A→B data flow - determines real-time bus directionality. |
| 2–9 (A0–A7) | A-side bidirectional data port | Non-inverting I/O pins; function as inputs or outputs depending on T/R state and OE level. |
| 10 (GND) | Ground reference | Primary return path for all digital and output current; must be low-impedance for noise immunity. |
| 11 (VCC) | Positive supply | 5 V power rail connection; decoupling capacitor (0.1 µF) required adjacent to pin. |
| 12 (OE) | Output Enable (active-low) | High = all outputs forced high-impedance; essential for bus sharing and hot-swap isolation. |
| 13–19,20 (B0–B7) | B-side bidirectional data port | Higher-drive outputs (64 mA sink); connect to main system bus or memory data lines. |
Key Features
| Feature | Design Value |
|---|---|
| Octal bidirectional bus interface | Enables full-duplex 8-bit data exchange between isolated subsystems without external direction logic. |
| 3-State outputs with power-off protection | Outputs enter high-impedance state when VCC = 0 V - prevents back-driving and bus contention during power cycling. |
| B-port 64 mA sink capability | Drives long PCB traces, multiple TTL inputs, or legacy peripherals without external buffers. |
| FAST TTL-compatible timing | Meets 74F family AC specs: tPLH/tPHL ≤ 6.0 ns, tPZH/tPHZ ≤ 8.0 ns - interoperable with existing 74F designs. |
| Commercial temperature range support | Validated from 0 °C to +70 °C - suitable for office equipment, industrial controllers, and PC add-in cards. |
Applications
| Industrial Backplane Interface | Memory Expansion Module |
|---|---|
Use Scenario: Isolating CPU address/data bus from peripheral expansion slots in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional bus transceiver managing data flow between microcontroller and field I/O modules under software-controlled direction. Use Value: 64 mA B-port sink current drives long backplane traces; 4.0 ns propagation delay maintains timing margin in 20 MHz bus cycles. |
Use Scenario: Adding external SRAM or EPROM to embedded microcontrollers with limited address/data pins. IC Role / Device Role / Timing Role: Direction-controlled buffer extending 8-bit data bus between MCU and memory device while preserving timing integrity. Use Value: 3-state enable/disable timing (≤8.0 ns) aligns with memory access strobes; non-inverting logic avoids added setup delays. |
| Legacy System Bus Arbitration | Test Equipment Data Capture |
Use Scenario: Sharing a common ISA-style data bus among multiple DMA-capable peripherals in test instrumentation racks. IC Role / Device Role / Timing Role: Bus isolator activated via OE to prevent contention during multi-master arbitration sequences. Use Value: High-impedance state on power removal eliminates risk of backfeeding powered-down modules - critical for hot-swap safety. |
Use Scenario: Capturing parallel digital signals from DUTs (device under test) into logic analyzers or FPGA-based capture engines. IC Role / Device Role / Timing Role: Level-shifting and bus-driving interface between DUT's 5 V TTL outputs and analyzer's input conditioning stage. Use Value: FAST TTL input thresholds (VIH = 2.0 V, VIL = 0.8 V) ensure reliable sampling of marginal logic edges in production test environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74F245N | Dual-in-line package (DIP20, SOT146-1); identical electrical specs and pinout. | Suitable for through-hole prototyping or legacy board rework where SOIC footprint is unavailable. | Select when manual soldering, breadboarding, or mechanical mounting constraints favor DIP form factor. |
| 74LCX245MTCX | Lower VCC range (2.0–3.6 V), CMOS technology, 3.3 V I/O compatible; 5.5 ns max tPLH. | Designed for mixed-voltage systems interfacing 3.3 V logic to 5 V buses; not drop-in replaceable. | Choose only when migrating to low-voltage logic domains - requires level-shifting review and layout update. |
Compared with SN74F245N, the N74F245D,602 offers identical functionality in surface-mount format for automated assembly and higher board density; versus 74LCX245MTCX, it maintains native 5 V TTL compatibility without voltage translation but consumes more quiescent current (70 mA vs. ~10 µA).
Availability
N74F245D,602 is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory expansion modules, legacy system bus arbitration, and test equipment data capture requiring stable component supply and long-term obsolescence management.
Supply support for N74F245D,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
Nexperia is a global leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP's Standard Products division in 2017 and focused on automotive, industrial, computing, and consumer markets.
The 74F series logic portfolio - including N74F245D,602 - was originally developed by Philips Semiconductors to deliver high-speed, robust TTL-compatible interface solutions for commercial-grade computing and control systems.
FAQ
What is the maximum operating frequency supported by the N74F245D,602?
The N74F245D,602 does not specify a maximum clock frequency directly, but its 4.0 ns typical propagation delay (tPLH/tPHL) and 6.0 ns maximum delay under worst-case conditions imply reliable operation up to approximately 160 MHz in tightly controlled setups. Real-world bus frequency depends on trace capacitance, load count, and setup/hold margins - design validation at target speed is recommended using the AC waveform definitions in the official Nexperia datasheet for N74F245D,602.
Is the N74F245D,602 pin-compatible with the SN74F245N?
Yes, the N74F245D,602 is functionally and pin-compatible with the SN74F245N. Both share identical pin numbering, logic behavior, and electrical specifications per the FAST TTL standard. The only difference is package type: N74F245D,602 uses SO20 (SOT163-1), while SN74F245N uses DIP20 (SOT146-1). No PCB redesign is needed beyond footprint adaptation - same netlist and schematic symbol apply to both versions of N74F245D,602 and SN74F245N.
Does the N74F245D,602 support hot-swap or live-insertion?
The N74F245D,602 supports safe hot-swap operation due to its inherent 3-state behavior during power-off: when VCC drops below functional threshold, all outputs automatically enter high-impedance state, preventing back-driving of live buses. However, it lacks dedicated hot-swap protection circuitry (e.g., slew-rate control or current limiting), so system-level design - including current-limiting resistors and staggered connector pin lengths - remains essential for robust live insertion in N74F245D,602-based applications.
Can the N74F245D,602 be used with 3.3 V logic systems?
No, the N74F245D,602 is designed for 5 V FAST TTL operation and is not 3.3 V tolerant. Its absolute maximum input voltage is +7.0 V, but VIH minimum is 2.0 V and VIL maximum is 0.8 V - meaning 3.3 V logic outputs may not reliably meet VIH requirements, and applying 3.3 V to inputs risks violating DC specs over temperature. For 3.3 V systems, use purpose-built translators like 74LVC245 or 74ALVC245 instead of N74F245D,602.
What is the quiescent supply current of the N74F245D,602?
The N74F245D,602 draws 70 mA typical total supply current (ICC) under recommended operating conditions (VCC = 5.0 V, Tamb = 25 °C, all outputs unloaded). This value increases with output loading and temperature - maximum ICC is 100 mA. Note that ICCZ (off-state supply current with OE high) is 75–110 mA, reflecting residual bias current even in 3-state mode - unlike CMOS devices, FAST TTL logic does not achieve ultra-low standby current, which must be accounted for in power budgeting for N74F245D,602 deployments.
N74F245D,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
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 3mA, 24mA; 15mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
N74F245D,602 FAQ
1.How can I place an order for N74F245D,602 through Aetrix?
Please submit a Request for Quotation (RFQ) for N74F245D,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 N74F245D,602 reliable?
The price and inventory of N74F245D,602 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for N74F245D,602 is usually 5 days.
3.What payment methods are accepted for N74F245D,602?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for N74F245D,602 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for N74F245D,602?
N74F245D,602 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your N74F245D,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 N74F245D,602?
For technical support, including N74F245D,602 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your N74F245D,602 requirements.
6.How does Aetrix verify that N74F245D,602 is sourced from the original manufacturer or authorized distributors?
All N74F245D,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 N74F245D,602 meets industry standards.
7.What is the process for return or replacement of N74F245D,602?
All N74F245D,602 units undergo pre-shipment inspection (PSI). If there is an issue with N74F245D,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 N74F245D,602 part is unused and in its original packaging.
Return procedure for N74F245D,602:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
N74F245D,602 Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
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…
