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Texas Instruments SN74AHCT541PWRG3
- Part No.:
- SN74AHCT541PWRG3
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74AHCT541PWRG3.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,999
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Product details
Overview
SN74AHCT541PWRG3 from Texas Instruments is an octal non-inverting buffer/driver with 3-state outputs, designed for bus line driving and memory address register buffering in 5-V TTL-compatible digital systems. It features dual output-enable inputs (OE1/OE2), 8-bit non-inverted data path, ±8 mA output drive at VCC = 5 V, and operates from –40°C to +125°C.
For engineers reviewing the SN74AHCT541PWRG3 datasheet, SN74AHCT541PWRG3 pinout, SN74AHCT541PWRG3 application, or SN74AHCT541PWRG3 equivalent, key selection criteria include 3-state control architecture, TTL-input compatibility, 6.5 ns max propagation delay (CL = 15 pF), and TSSOP-20 package suitability for high-density PCB layouts.
Technical Context
The SN74AHCT541PWRG3 implements two independent 4-channel 3-state buffers controlled by active-low OE1 and OE2 inputs - each enabling four corresponding outputs (Y1–Y4 and Y5–Y8). Its 3-state logic uses a dual-input AND gate with inverted enables, placing all outputs in high-impedance when either OE is high.
It operates strictly within 4.5 V to 5.5 V supply range, supports TTL-level inputs (VIH = 2 V, VIL = 0.8 V), delivers VOH ≥ 3.8 V and VOL ≤ 0.44 V under full load, and exhibits input capacitance of 10 pF and power dissipation capacitance of 12 pF at 1 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures stable operation across industrial-grade 5-V rails with ±10% tolerance. |
| Output Drive | ±8 mA - sufficient to drive standard TTL loads and moderate-capacitance buses without external buffering. |
| Propagation Delay | 6.5 ns max (A→Y, CL = 15 pF) - enables reliable timing in 100+ MHz system clock domains with margin. |
| Input Compatibility | TTL-voltage compatible (VIH = 2 V, VIL = 0.8 V) - interoperable with legacy 5-V TTL logic without level shifters. |
| ESD Protection | ±2000 V HBM, ±1000 V CDM - meets JEDEC standards for robust handling in automated assembly and field environments. |
| Operating Temperature | –40°C to +125°C - qualified for extended industrial and under-hood automotive applications. |
| Quiescent Current | 40 µA max (ICC) - supports low-static-power system design where standby current matters. |
Pinout & Package
TSSOP-20 (PW) package: 6.50 mm × 6.40 mm body, 0.65 mm lead pitch, thin-profile surface-mount construction optimized for automated placement and thermal performance (RθJA = 116.8°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1, OE2 | Active-low output enable controls first and second group of four outputs respectively; tied high disables both groups. |
| 2–9 | A1–A8 | Eight buffered data inputs; non-inverting path to corresponding Y outputs when respective OE is low. |
| 10 | GND | Ground reference for all logic and output stages; must be low-impedance connection to minimize noise coupling. |
| 11–18 | Y1–Y8 | Eight 3-state outputs; high-impedance when OE1 or OE2 is high, else replicate A1–A8 with ±8 mA drive capability. |
| 20 | VCC | 5-V power supply pin; requires local 0.1 µF ceramic bypass capacitor placed adjacent to pin for noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 3-state control | OE1 and OE2 allow selective disabling of Y1–Y4 and Y5–Y8 groups - simplifies bidirectional bus arbitration and reduces contention risk. |
| TTL-input compatibility | Accepts standard 5-V TTL logic thresholds (VIH = 2 V, VIL = 0.8 V) - eliminates need for level translation when interfacing with legacy controllers. |
| Low input capacitance | 10 pF typical - minimizes loading on upstream drivers and preserves signal integrity in fan-out-heavy configurations. |
| High noise immunity | 20 ns/V input transition rate limit - suppresses false triggering from slow-rising or noisy signals on address/data lines. |
| Latch-up immunity | Exceeds 250 mA per JESD17 - ensures robustness against transient overcurrent events in mixed-signal environments. |
Applications
| Memory Address Buffering | Parallel Bus Isolation |
|---|---|
Use Scenario: Buffering 8-bit address lines between microcontroller and SRAM/ROM in embedded control systems. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer isolating CPU address bus from memory during DMA or peripheral access cycles. Use Value: Prevents bus contention and reduces capacitive loading on MCU pins while enabling clean address strobing at up to 100 MHz. |
Use Scenario: Isolating shared parallel data bus between FPGA and multiple peripherals (ADC, DAC, display controller). IC Role / Device Role / Timing Role: Directionally agnostic 8-bit buffer enabling time-multiplexed access via OE1/OE2 control signals. Use Value: Eliminates need for discrete bus switches; supports simultaneous read/write arbitration with sub-7 ns propagation delay. |
| Industrial I/O Expansion | Legacy System Interface |
Use Scenario: Extending GPIO count of PLC mainboard to drive LED arrays, relays, or optocouplers. IC Role / Device Role / Timing Role: High-current (±8 mA) output driver translating 3.3-V or 5-V logic levels to industrial load interfaces. Use Value: Directly drives 20-mA LEDs or 10-kΩ pull-up networks without external transistors, reducing BOM count. |
Use Scenario: Interfacing modern microcontrollers with legacy 5-V TTL peripherals (e.g., EPROM programmers, test equipment). IC Role / Device Role / Timing Role: Level-adaptive buffer ensuring signal integrity across mixed-voltage subsystem boundaries. Use Value: Maintains setup/hold timing margins with 6.5 ns delay and 0.44 V VOL - critical for glitch-free EPROM write cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC541APWR | Lower VCC range (1.65–3.6 V), CMOS-input only, 32 mA drive, 3.5 ns typ delay. | Requires level-shifting for 5-V TTL systems; better suited for 3.3-V FPGA/CPU I/O expansion. | Select when migrating to low-voltage logic or needing higher drive strength; not drop-in for 5-V TTL designs. |
| 74ACT541PWRE4 | Same 5-V operation, but ACT family: faster (4.5 ns typ), higher ICC (40 µA vs 4 µA), identical pinout. | Higher speed suits high-frequency bus applications; increased static current impacts ultra-low-power designs. | Prefer for timing-critical 5-V systems where propagation delay dominates over quiescent power. |
Compared with SN74LVC541APWR and 74ACT541PWRE4, the SN74AHCT541PWRG3 uniquely balances TTL compatibility, industrial temperature range, and moderate speed/power - making it optimal for cost-sensitive, mixed-legacy industrial controllers where direct 5-V interoperability is mandatory.
Availability
SN74AHCT541PWRG3 is available at Aetrix Electronics and suitable for industrial control systems, legacy interface modules, and memory subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74AHCT541PWRG3 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 decades of expertise in industrial-grade logic families and automotive-qualified components.
The SN74AHCT541PWRG3 belongs to TI's AHCT logic series - engineered for seamless integration into 5-V TTL-based systems requiring robust noise immunity, wide temperature operation, and proven reliability in harsh environments.
FAQ
What is the function of OE1 and OE2 on the SN74AHCT541PWRG3?
OE1 and OE2 are active-low output-enable inputs that independently control two groups of four outputs: OE1 enables Y1–Y4, and OE2 enables Y5–Y8. When either is high, its associated outputs enter high-impedance state. Both must be low for full 8-bit buffer operation. This architecture allows flexible bus partitioning in SN74AHCT541PWRG3-based designs without external logic.
Does the SN74AHCT541PWRG3 support 3.3-V input signals?
No - the SN74AHCT541PWRG3 is TTL-input compatible with VIH = 2.0 V minimum and VIL = 0.8 V maximum, but it requires a 4.5–5.5 V supply. While 3.3-V logic may occasionally meet the 2.0 V VIH threshold, it lacks guaranteed noise margin and violates recommended operating conditions. For reliable 3.3-V interfacing, use SN74LVC541APWR instead. Always verify voltage thresholds in SN74AHCT541PWRG3 datasheet Section 4.3.
What is the maximum capacitive load the SN74AHCT541PWRG3 can drive reliably?
The SN74AHCT541PWRG3 is characterized for CL = 15 pF and CL = 50 pF loads in switching specifications. At CL = 50 pF, tPLH/tPHL increases to 9.5 ns max, and output rise/fall times degrade proportionally. For stable operation beyond 50 pF, add series damping resistors (e.g., 33 Ω) near outputs - as shown in SN74AHCT541PWRG3 layout guidelines - to prevent ringing and overshoot.
Is the SN74AHCT541PWRG3 RoHS compliant and lead-free?
Yes - SN74AHCT541PWRG3 carries "SN" lead finish (matte tin), is RoHS compliant, and rated MSL Level-1 (unlimited floor life at <30°C/60% RH). Its TSSOP-20 package uses NiPdAu underplating and conforms to JEDEC J-STD-020 reflow profile. Full compliance documentation, including material declarations and test reports, is available for SN74AHCT541PWRG3 via TI's Quality & Environmental page.
How does the SN74AHCT541PWRG3 handle unused inputs?
All unused inputs on the SN74AHCT541PWRG3 must be tied to VCC or GND - floating inputs cause undefined output states and increased ICC. For OE pins, tie to VCC via pull-up to ensure high-impedance default; for A inputs, tie to GND or VCC depending on desired default output state. This requirement is explicitly stated in SN74AHCT541PWRG3 datasheet Section 4.3 and Figure 7-1 layout example.
SN74AHCT541PWRG3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AHCT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
SN74AHCT541PWRG3 FAQ
1.How can I place an order for SN74AHCT541PWRG3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AHCT541PWRG3 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 SN74AHCT541PWRG3 reliable?
The price and inventory of SN74AHCT541PWRG3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AHCT541PWRG3 is usually 5 days.
3.What payment methods are accepted for SN74AHCT541PWRG3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AHCT541PWRG3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AHCT541PWRG3?
SN74AHCT541PWRG3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AHCT541PWRG3 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 SN74AHCT541PWRG3?
For technical support, including SN74AHCT541PWRG3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AHCT541PWRG3 requirements.
6.How does Aetrix verify that SN74AHCT541PWRG3 is sourced from the original manufacturer or authorized distributors?
All SN74AHCT541PWRG3 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 SN74AHCT541PWRG3 meets industry standards.
7.What is the process for return or replacement of SN74AHCT541PWRG3?
All SN74AHCT541PWRG3 units undergo pre-shipment inspection (PSI). If there is an issue with SN74AHCT541PWRG3, 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 SN74AHCT541PWRG3 part is unused and in its original packaging.
Return procedure for SN74AHCT541PWRG3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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