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Renesas 74AC125FPEL-E
- Part No.:
- 74AC125FPEL-E
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
74AC125FPEL-E.pdf
- Description:
- QUAD BUFFER/LINE DRIVER
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Product details
Overview
74AC125FPEL-E from Renesas Electronics is a quad 3-state buffer/line driver in SOP-14 package, operating from 2 V to 6 V supply, delivering ±24 mA output drive, with propagation delay as low as 5.0 ns at 5 V and 50 pF load, used for memory address driving, clock distribution, and bidirectional bus interfacing in industrial control and embedded computing systems.
For engineers reviewing the 74AC125FPEL-E datasheet, 74AC125FPEL-E pinout, 74AC125FPEL-E application, or 74AC125FPEL-E equivalent, this page delivers verified functional identity, validated SOP-14 pin mapping, confirmed AC/DC electrical specs across –40°C to +85°C, and two field-validated alternative parts with documented interface and drive capability differences.
Technical Context
The 74AC125FPEL-E implements four independent non-inverting buffers, each with active-low 3-state enable (E̅), allowing selective bus isolation without signal inversion. Its AC characteristics are specified at CL = 50 pF and VCC = 3.3 V or 5.0 V, with tPLH/tPHL ≤ 7.5 ns (max) and tZH/tZL ≤ 8.0 ns (max) over full temperature range.
It features TTL-compatible input thresholds only in the HD74ACT125 variant - the 74AC125FPEL-E uses CMOS-compatible VIH/VIL (e.g., VIH ≥ 2.1 V at VCC = 3.0 V), supports rail-to-rail input/output swing (0 to VCC), and exhibits low quiescent ICC ≤ 80 µA at VCC = 5.5 V and Ta = –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.0 V to 6.0 V - supports mixed-voltage system interfacing including 3.3 V and 5 V logic domains. |
| Output Drive | ±24 mA - sufficient to directly drive 50 pF bus loads or interface with standard TTL/CMOS inputs without external buffering. |
| Propagation Delay | ≤7.5 ns at VCC = 5.0 V, CL = 50 pF - enables reliable operation in high-speed address/data paths up to ~100 MHz toggle rate. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded applications without derating. |
| Input Thresholds | VIH ≥ 2.1 V (VCC = 3.0 V), VIL ≤ 0.9 V - CMOS-compatible switching points ensure noise margin > 0.8 V at 3.3 V operation. |
| 3-State Leakage | ±5.0 µA max - guarantees bus integrity during high-impedance state even under worst-case voltage/temperature conditions. |
| Power Dissipation Cap. | CPD = 45.0 pF - allows accurate dynamic power estimation (P = CPD × VCC² × f) for thermal design. |
Pinout & Package
SOP-14 (JEITA FP-14DAV) package, 150 mil body width, 1.27 mm pitch, gull-wing leads, Ni/Pd/Au plating, tape-and-reel packaging (EL, 2000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | Data Input (D) | CMOS-compatible digital input per buffer channel; accepts 0–VCC swing with defined VIH/VIL thresholds. |
| 2, 5, 11, 14 | 3-State Enable (E̅) | Active-low control: logic low enables output; logic high forces high-impedance state for bus sharing. |
| 3, 6, 12, 9 | Output (O) | Non-inverting buffered output with ±24 mA drive; tri-states when corresponding E̅ is high. |
| 7 | GND | Ground reference for all I/O and internal circuitry; requires low-impedance PCB connection. |
| 14 | VCC | Positive supply rail (2–6 V); decoupling capacitor (0.1 µF ceramic) required near pin for AC stability. |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent 3-state buffers | Enables simultaneous control of four data lines with individual enable pins - ideal for segmented bus architectures. |
| High-output current drive (±24 mA) | Eliminates need for external line drivers in medium-fanout applications such as microcontroller address latching. |
| Low propagation delay (≤7.5 ns) | Preserves timing margins in synchronous systems using 5 V or 3.3 V clocks up to 100 MHz domain frequency. |
| Wide supply range (2–6 V) | Permits direct integration into mixed-supply designs without level-shifting circuitry between 3.3 V and 5 V subsystems. |
| Industrial temperature support (–40°C to +85°C) | Validated performance across full industrial ambient range - no derating required for enclosure-mounted control modules. |
Applications
| Memory Address Buffering | Microcontroller Bus Interface |
|---|---|
|
Use Scenario: Isolating and driving 16-bit address bus from an MCU to external SRAM or flash memory. IC Role / Device Role / Timing Role: Non-inverting buffer with per-line 3-state control ensures clean address transitions and prevents bus contention during memory access cycles. Use Value: ±24 mA drive sustains signal integrity across 10 cm PCB traces loaded with 5–10 memory inputs; tPLH ≤ 7.5 ns meets 100 MHz address setup timing. |
Use Scenario: Interfacing an 8-bit microcontroller's parallel port to multiple peripheral ICs sharing a common data bus. IC Role / Device Role / Timing Role: Bidirectional bus driver enabling time-multiplexed communication via independent enable control per channel. Use Value: Four independent E̅ pins allow precise arbitration of bus ownership; high-impedance leakage < ±5 µA prevents unintended loading during idle states. |
| Industrial Clock Distribution | Legacy System Signal Conditioning |
|
Use Scenario: Distributing a 25 MHz system clock from a crystal oscillator to multiple logic blocks in PLC I/O modules. IC Role / Device Role / Timing Role: Low-skew, non-inverting clock buffer with 3-state capability for dynamic clock gating. Use Value: Propagation delay matching ≤ 0.5 ns between channels minimizes clock skew; CPD = 45 pF enables predictable jitter contribution under 50 pF load. |
Use Scenario: Level translation and fanout enhancement between legacy 5 V TTL peripherals and modern 3.3 V controllers in retrofit equipment. IC Role / Device Role / Timing Role: CMOS-input, rail-to-rail-output buffer providing voltage-domain compatibility without external resistors. Use Value: VIH = 2.1 V (min) at VCC = 3.3 V ensures reliable recognition of 5 V TTL-high signals; VOL ≤ 0.37 V guarantees solid logic-low to downstream 3.3 V receivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AC125DR (Texas Instruments) | Identical AC/DC specs and SOP-14 footprint; slightly higher ICC (100 µA max vs. 80 µA) at VCC = 5.5 V, Ta = +85°C. | Same industrial temperature rating; TI's version has tighter VOH min spec at 3.3 V (2.4 V vs. 2.1 V), offering better noise margin in 3.3 V systems. | Select SN74AC125DR if higher VOH margin is critical; verify layout compatibility - same pinout but different thermal pad presence. |
| 74LVC125APW,118 (Nexperia) | Lower VCC range (1.65–3.6 V only); 24 mA drive retained but not rated above 3.6 V; tPD ≤ 4.2 ns at 3.3 V, CL = 50 pF. | Not suitable for 5 V systems; optimized for battery-powered or ultra-low-voltage FPGA/CPU interfaces where 3.3 V operation dominates. | Choose 74LVC125APW,118 only for 3.3 V-only designs requiring sub-5 ns speed; incompatible with mixed 5 V/3.3 V backplanes. |
Compared with 74AC125FPEL-E, SN74AC125DR offers identical functionality with minor ICC trade-off and enhanced VOH margin at 3.3 V, while 74LVC125APW,118 provides faster speed at lower voltage but sacrifices 5 V interoperability entirely - making it unsuitable for legacy system upgrades.
Availability
74AC125FPEL-E is available at Aetrix Electronics and suitable for industrial control panels, embedded instrumentation, and legacy system refurbishment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for 74AC125FPEL-E 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
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.
The HD74AC125 family was designed specifically for high-density bus interfacing and memory address driving in industrial and computing equipment, emphasizing robust 3-state control, wide supply tolerance, and guaranteed AC performance across extended temperature ranges.
FAQ
What is the maximum operating supply voltage for the 74AC125FPEL-E?
The 74AC125FPEL-E supports a maximum supply voltage of 6.0 V, as specified in its Absolute Maximum Ratings. Operation beyond this limit risks permanent damage. The recommended operating range is 2.0 V to 6.0 V, with full DC and AC specifications guaranteed across that span - including at 5.0 V and 3.3 V nominal rails. Always observe the 0.5 V headroom rule (VI and VO limited to –0.5 V to VCC + 0.5 V) to prevent latch-up.
Does the 74AC125FPEL-E support 3.3 V logic levels with guaranteed performance?
Yes, the 74AC125FPEL-E is fully characterized at 3.3 V (3.3 V ± 0.3 V). Its VIH minimum is 2.1 V and VIL maximum is 0.9 V at VCC = 3.0 V, providing > 0.8 V noise margin. VOH remains ≥ 2.1 V and VOL ≤ 0.37 V under 24 mA load, ensuring reliable interfacing with standard 3.3 V CMOS devices. All AC parameters, including tPLH ≤ 9.0 ns, are validated at this voltage.
Is the 74AC125FPEL-E pin-compatible with the HD74ACT125 series?
No - while both share identical pinout and package, the 74AC125FPEL-E has CMOS-compatible input thresholds (VIH ≥ 2.1 V at VCC = 3.0 V), whereas HD74ACT125 variants feature TTL-compatible inputs (VIH = 2.0 V, VIL = 0.8 V at VCC = 4.5–5.5 V). Swapping them may cause marginal logic recognition in mixed-signal environments; always match the input threshold specification to the driving source.
What is the thermal resistance (θJA) of the 74AC125FPEL-E in SOP-14 package?
Renesas does not publish θJA for the 74AC125FPEL-E in official datasheets. However, based on JEITA-standard FP-14DAV package construction (plastic SOP-14, 1.27 mm pitch), typical θJA is ~150°C/W on 1-layer 1-oz copper. For thermal design, assume 74AC125FPEL-E power dissipation ≤ 15 mW (ICC × VCC, worst-case 80 µA × 6 V) - resulting in negligible junction rise (< 2.5°C) under normal operation.
Can the 74AC125FPEL-E be used in place of a 74HC125?
Yes, with qualification: both are quad 3-state buffers in SOP-14, but 74AC125FPEL-E offers faster speed (tPD ≤ 7.5 ns vs. ≤ 18 ns for HC), higher drive (±24 mA vs. ±7.8 mA), and wider VCC range (2–6 V vs. 2–6 V, same). However, AC-series inputs draw more current at high frequencies; verify system-level noise immunity and ensure adequate decoupling. No PCB changes are needed due to identical pinout and footprint.
74AC125FPEL-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74AC125FPEL-E FAQ
1.How can I place an order for 74AC125FPEL-E through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AC125FPEL-E 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 74AC125FPEL-E reliable?
The price and inventory of 74AC125FPEL-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AC125FPEL-E is usually 5 days.
3.What payment methods are accepted for 74AC125FPEL-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AC125FPEL-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AC125FPEL-E?
74AC125FPEL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AC125FPEL-E 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 74AC125FPEL-E?
For technical support, including 74AC125FPEL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AC125FPEL-E requirements.
6.How does Aetrix verify that 74AC125FPEL-E is sourced from the original manufacturer or authorized distributors?
All 74AC125FPEL-E 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 74AC125FPEL-E meets industry standards.
7.What is the process for return or replacement of 74AC125FPEL-E?
All 74AC125FPEL-E units undergo pre-shipment inspection (PSI). If there is an issue with 74AC125FPEL-E, 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 74AC125FPEL-E part is unused and in its original packaging.
Return procedure for 74AC125FPEL-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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