My Inquiry
My Account
Texas Instruments SN74ACT7541PWR
- Part No.:
- SN74ACT7541PWR
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74ACT7541PWR.pdf
- Description:
- EIGHT-CHANNEL 4.5V-TO-5.5V BUFFE
- Quantity:
- Payment:
- Shipping:
Inventory:2,721
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74ACT7541PWR from Texas Instruments is an octal buffer/driver IC with open-drain CMOS outputs, TTL-compatible inputs, and dual active-low output enable (OE1/OE2) control. It operates from 4.5V to 5.5V, delivers up to 24mA continuous output drive at 5V, and achieves 9.6ns max propagation delay (CL = 50pF). It is used in level-shifting, LED driving, and relay control circuits where wired-AND logic or high-impedance state management is required.
For engineers reviewing the SN74ACT7541PWR datasheet, SN74ACT7541PWR pinout, SN74ACT7541PWR application, or SN74ACT7541PWR equivalent, key selection considerations include open-drain output compatibility with 50Ω transmission lines, dual OE control logic, thermal performance in TSSOP-20 packaging, and compliance with TTL input thresholds under industrial temperature range (–40°C to 125°C).
Technical Context
The SN74ACT7541PWR implements eight independent non-inverting buffers, each with open-drain output structure requiring external pull-up for HIGH-level assertion. Output enable logic requires both OE1 and OE2 low to activate all channels - a shared control architecture enabling simultaneous high-impedance state entry across all eight outputs.
Its TTL-compatible inputs accept VIH ≥ 2V and VIL ≤ 0.8V at 4.5V–5.5V supply, while electrical characteristics specify VOL ≤ 0.5V at IOL = 24mA and VOH ≥ 3.7V at IOH = –24mA. Switching behavior is characterized with tPHL/tPLH ≤ 9.6ns and enable/disable delays (tPZL/tPLZ) ≤ 11.9ns at 5V and CL = 50pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5V to 5.5V - ensures compatibility with standard 5V TTL/CMOS systems and stable operation across industrial voltage tolerances. |
| Output Drive (Continuous) | 24mA at 5V - supports direct driving of LEDs, small relays, or logic inputs without external amplification. |
| Propagation Delay | 9.6ns max (5V, CL = 50pF) - enables use in high-speed digital interfaces up to ~50MHz clock-equivalent timing. |
| Input Compatibility | TTL-compatible - accepts standard TTL logic levels (VIH ≥ 2V, VIL ≤ 0.8V), simplifying interface with legacy 5V logic families. |
| Operating Temperature | –40°C to +125°C - qualified for automotive under-hood, industrial control, and harsh-environment embedded applications. |
| Output Structure | Open-drain CMOS - allows wired-AND bus configurations, level translation, and controlled discharge of capacitive nodes. |
| Enable Logic | Dual active-low OE1/OE2 - both must be low to enable outputs; any high forces all Yx into high-impedance state. |
Pinout & Package
TSSOP-20 (PW) package: 6.5mm × 6.4mm body, 0.65mm pitch, exposed thermal pad not present (unlike RKS variant); RoHS-compliant, NIPDAU lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1, OE2 | Active-low output enable inputs - both must be logic LOW to assert outputs; HIGH on either disables all eight Yx outputs. |
| 2–9 | A1–A8 | Buffer inputs - non-inverting, TTL-compatible CMOS inputs; unused pins must be tied to VCC or GND. |
| 10 | GND | Ground reference - serves as return path for all output sink current and supply decoupling. |
| 11–18 | Y8–Y1 | Open-drain outputs - actively pull LOW or float to high-impedance; require external pull-up for HIGH-level signaling. |
| 20 | VCC | Positive supply - powers internal logic and defines output voltage swing ceiling; bypass with 0.1µF capacitor near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Wired-AND Bus Support | Open-drain outputs allow multiple SN74ACT7541PWR devices (or other open-drain drivers) to share a common bus line without contention. |
| Industrial Temp Range | –40°C to +125°C operation enables deployment in motor control, power supply monitoring, and factory automation systems. |
| Fast Enable/Disable | tPZL ≤ 11.9ns and tPLZ ≤ 11.5ns ensure rapid transition into/out of high-impedance state for dynamic bus arbitration. |
| 50Ω Transmission Line Drive | Capable of directly driving 50Ω terminated lines - reduces need for external line drivers in test equipment and data acquisition interfaces. |
| Low Input Leakage | ±1µA max II at 5.5V - minimizes loading on upstream signal sources and preserves signal integrity in high-impedance sensor interfaces. |
Applications
| LED Indicator Control | Level-Shifting Interface |
|---|---|
Use Scenario: Driving multiple status LEDs in a programmable logic controller (PLC) backplane with shared 3.3V or 5V pull-up rails. IC Role / Device Role / Timing Role: Octal open-drain buffer providing isolated, current-limited sinking paths for LED anodes tied to VCC. Use Value: Eliminates need for discrete transistors per LED; supports mixed-voltage signaling via pull-up selection (e.g., 3.3V pull-up with 5V SN74ACT7541PWR supply). | Use Scenario: Translating 5V microcontroller GPIO signals to 3.3V I²C bus lines or other lower-voltage logic domains. IC Role / Device Role / Timing Role: Open-drain translator enabling bidirectional communication by controlling pull-up rail voltage independently of driver supply. Use Value: Maintains signal integrity across voltage domains without direction-control pins; supports multi-master I²C topologies. |
| Relay Driver Interface | Capacitive Node Discharge Control |
Use Scenario: Controlling 12V DC coil relays in HVAC control panels using 5V logic-level microcontrollers. IC Role / Device Role / Timing Role: High-current sinking buffer interfacing between MCU GPIO and relay coil flyback diode network. Use Value: Delivers 24mA continuous sink current sufficient for most small-to-medium signal relays; built-in ESD protection reduces external TVS requirements. | Use Scenario: Rapidly discharging sample-and-hold capacitors or reset lines in analog-to-digital subsystems. IC Role / Device Role / Timing Role: Precision-controlled discharge switch with defined VOL and fast tPLH/tPHL for predictable timing margins. Use Value: Enables sub-microsecond discharge times (e.g., <1µs for 100pF with 24mA sink), improving ADC conversion cycle efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal open-drain buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC8T245PW | Bi-directional level shifter with auto-direction sensing; push-pull outputs unless configured for open-drain mode via OE. | Requires external configuration for open-drain behavior; lacks native dual-OE control and 24mA sink rating at 5V. | Choose when bidirectional voltage translation is needed; avoid if strict octal open-drain buffering with simultaneous disable is required. |
| 74ACT107541PW | Identical pinout, function, and specs - alternate manufacturer marking for same TI device; no functional difference. | No application difference; identical qualification, thermal, and timing behavior. | Valid second-source option with identical form-fit-function; verify part marking and traceability for supply chain diversification. |
Compared with SN74ACT7541PWR, SN74LVC8T245PW offers flexibility in voltage translation but sacrifices deterministic open-drain control and industrial temperature margin, while 74ACT107541PW provides full drop-in equivalence with no design or layout impact.
Availability
SN74ACT7541PWR is available at Aetrix Electronics and suitable for industrial control systems, automotive body electronics, and test instrumentation requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for SN74ACT7541PWR 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 experience in high-reliability industrial and automotive-grade components.
The SN74ACT7541PWR belongs to TI's ACT family of advanced CMOS logic devices, designed specifically for robust 5V system interfacing with enhanced noise immunity, wide temperature operation, and open-drain flexibility in space-constrained TSSOP packaging.
FAQ
What is the maximum continuous output current rating for SN74ACT7541PWR?
The SN74ACT7541PWR supports 24mA continuous output sink current per channel at VCC = 5V, as specified in the Recommended Operating Conditions table. This rating applies across the full industrial temperature range (–40°C to +125°C) and ensures reliable operation without thermal derating in typical PCB layouts with adequate copper pour.
Does SN74ACT7541PWR support true bidirectional communication?
No, SN74ACT7541PWR is a unidirectional octal buffer with fixed input-to-output signal flow. Its open-drain outputs enable wired-AND bus sharing but do not support automatic direction sensing or reverse signal propagation. For bidirectional translation, consider dedicated level shifters like SN74LVC8T245 instead of SN74ACT7541PWR.
How should unused inputs be handled on SN74ACT7541PWR?
All unused inputs on SN74ACT7541PWR must be terminated to a valid logic level - either VCC or GND - to prevent floating states that cause excessive power consumption or oscillation. A 10kΩ pull-up or pull-down resistor is recommended when direct connection isn't feasible; never leave A1–A8 or OE1/OE2 pins unconnected during operation.
Can SN74ACT7541PWR drive a 50Ω transmission line directly?
Yes, SN74ACT7541PWR is explicitly characterized to drive 50Ω transmission lines, as noted in its Features section. When paired with appropriate series termination or proper PCB impedance control, it maintains signal integrity for short-haul digital signaling - such as between adjacent boards in modular test equipment - without requiring external line drivers.
What is the function of the dual output enable pins (OE1 and OE2) on SN74ACT7541PWR?
The dual active-low output enable pins OE1 and OE2 on SN74ACT7541PWR implement AND-gated control: both must be LOW to enable all eight outputs. If either OE1 or OE2 is HIGH, all Y1–Y8 enter high-impedance state simultaneously - enabling coordinated bus isolation or power-gating across multiple channels in real-time control systems.
SN74ACT7541PWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ACT
- 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:
- Open Drain
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
SN74ACT7541PWR FAQ
1.How can I place an order for SN74ACT7541PWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ACT7541PWR 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 SN74ACT7541PWR reliable?
The price and inventory of SN74ACT7541PWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ACT7541PWR is usually 5 days.
3.What payment methods are accepted for SN74ACT7541PWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ACT7541PWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ACT7541PWR?
SN74ACT7541PWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ACT7541PWR 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 SN74ACT7541PWR?
For technical support, including SN74ACT7541PWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ACT7541PWR requirements.
6.How does Aetrix verify that SN74ACT7541PWR is sourced from the original manufacturer or authorized distributors?
All SN74ACT7541PWR 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 SN74ACT7541PWR meets industry standards.
7.What is the process for return or replacement of SN74ACT7541PWR?
All SN74ACT7541PWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ACT7541PWR, 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 SN74ACT7541PWR part is unused and in its original packaging.
Return procedure for SN74ACT7541PWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74ACT7541PWR 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…
