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Nexperia USA Inc. 74HCT7541PW,118
- Part No.:
- 74HCT7541PW,118
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCT7541PW,118.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:548
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Product details
Overview
74HCT7541PW,118 from Nexperia is an octal Schmitt-trigger buffer/line driver with 3-state outputs, dual active-low output enables (OE1, OE2), TTL-compatible input thresholds, and operation across -40 °C to +125 °C. It delivers jitter-free signal conditioning for noisy industrial bus lines, supports 6.0 mA drive strength at 4.5 V VCC, and features input clamp diodes enabling overvoltage-tolerant interfacing.
For engineers reviewing the 74HCT7541PW,118 datasheet, 74HCT7541PW,118 pinout, 74HCT7541PW,118 application, or 74HCT7541PW,118 equivalent, key selection criteria include Schmitt-trigger hysteresis (0.23 V typ at 4.5 V), 3-state enable timing (18–48 ns enable/disable), TSSOP20 thermal derating (10.0 mW/K above 100 °C), and TTL-level input compatibility.
Technical Context
This device implements dual independent 3-state control logic: OE1 and OE2 must both be LOW to enable all eight non-inverting outputs (Y0–Y7); either HIGH forces full high-impedance OFF-state. Inputs use Schmitt-trigger architecture with VT+ = 2.0 V and VT− = 0.7 V (typ, VCC = 4.5 V), delivering 0.23 V hysteresis for noise rejection on slow-rising signals.
It operates within a strict 4.5–5.5 V supply range per JEDEC JESD8C, draws ≤160 μA ICC (max, -40 °C to +125 °C), and maintains VOL ≤0.4 V at 6.0 mA sink current. Output transition times are 5–12 ns (typ) under 50 pF load, supporting reliable timing in 25 MHz digital interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with 5 V TTL systems and stable operation under rail variation. |
| Input Thresholds | VT+ = 2.0 V, VT− = 0.7 V (typ, VCC = 4.5 V) - Enables clean digitization of slow or noisy analog-like signals. |
| Output Drive | ±6.0 mA (min) - Sufficient to drive standard 50 Ω transmission lines or multiple CMOS inputs without external buffers. |
| Propagation Delay | 19–48 ns (An→Yn, VCC = 4.5 V) - Supports reliable timing in sub-25 MHz synchronous bus applications. |
| Hysteresis Voltage | 0.23 V (typ) - Rejects up to ±115 mV of input noise without false triggering. |
| 3-State Enable Time | 18–48 ns (OE→Yn, VCC = 4.5 V) - Allows precise bus arbitration timing in shared-data-path systems. |
| Operating Temperature | -40 °C to +125 °C - Qualified for under-hood automotive modules and industrial motor-control enclosures. |
Pinout & Package
TSSOP20 package (SOT360-1): 20-pin thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, 1.1 mm max height - optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1, OE2 | Active-low 3-state enables - both must be LOW for output drive; either HIGH disables all Y0–Y7 simultaneously. |
| 2–9 | A0–A7 | Non-inverting Schmitt-trigger inputs - accept slow or noisy signals and produce clean digital edges. |
| 10 | GND | Ground reference - decoupling capacitor placement here minimizes switching noise coupling into logic core. |
| 11–18 | Y0–Y7 | 3-state buffered outputs - high-impedance when OE1/OE2 HIGH; driven HIGH/LOW otherwise. |
| 20 | VCC | Positive supply - requires local 100 nF ceramic decoupling adjacent to pin for stable transient response. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5 V - interoperates directly with legacy 5 V TTL logic without level shifters. |
| Schmitt-trigger hysteresis | 0.23 V typical - eliminates chatter on slowly transitioning signals such as mechanical switch debouncing or sensor outputs. |
| Input clamp diodes | Supports VI up to VCC + 0.5 V with current limiting - enables safe interface to 12 V sensors or open-collector buses using series resistors. |
| Low ICC leakage | ≤160 μA total supply current (max, -40 °C to +125 °C) - reduces standby power in battery-backed or energy-sensitive systems. |
| JEDEC-compliant ESD | HBM >2000 V, CDM >1000 V - withstands handling and board-level electrostatic events without latch-up or parametric shift. |
Applications
| Industrial Bus Interface | Motor Control Signal Conditioning |
|---|---|
|
Use Scenario: Isolating and cleaning encoder quadrature signals before FPGA capture in servo drives. IC Role / Device Role / Timing Role: Schmitt-trigger buffer converting slow, noisy A/B phase edges into sharp, jitter-free clock/data transitions. Use Value: Eliminates missed counts caused by input noise or slow rise times, ensuring position accuracy within ±1 LSB over temperature. |
Use Scenario: Driving gate drivers for three-phase IGBTs from microcontroller PWM outputs in variable-frequency drives. IC Role / Device Role / Timing Role: 3-state line driver providing robust 6 mA drive strength and fast disable (≤48 ns) for dead-time control. Use Value: Prevents shoot-through by guaranteeing simultaneous high-Z state during PWM transitions, even with layout skew. |
| Automotive Sensor Hub | Legacy System Integration |
|
Use Scenario: Aggregating and conditioning analog sensor outputs (e.g., thermistors, potentiometers) in engine control units. IC Role / Device Role / Timing Role: Input buffer with overvoltage-tolerant clamping diodes interfacing 12 V sensor rails to 5 V MCU ADC inputs. Use Value: Enables direct connection to unregulated vehicle battery-supplied sensors using only series current-limiting resistors. |
Use Scenario: Interfacing modern microcontrollers to legacy 5 V TTL backplanes in test equipment and instrumentation racks. IC Role / Device Role / Timing Role: Level-shifting and bus-driving buffer maintaining TTL voltage thresholds while adding Schmitt noise immunity. Use Value: Resolves marginal timing and noise margins in aging systems without redesigning PCB traces or power domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal Schmitt-trigger buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT244PW,118 | Non-Schmitt inputs; no hysteresis; identical 3-state control and drive strength. | Lacks noise immunity on slow inputs; unsuitable for mechanical switches or analog sensor conditioning. | Select when interfacing clean digital sources only and cost sensitivity outweighs noise margin needs. |
| SN74LVTH162244DGGR | 16-bit, 3.3 V only; LVCMOS input thresholds; higher drive (24 mA); different pinout. | Requires level translation for 5 V systems; not drop-in compatible; better for high-speed 3.3 V buses. | Choose for new 3.3 V designs needing higher fanout or lower VCC, not for 5 V legacy replacement. |
Compared with 74HCT7541PW,118, the 74HCT244PW,118 sacrifices Schmitt-trigger noise rejection for lower cost, while SN74LVTH162244DGGR trades 5 V compatibility and pin-for-pin fit for higher speed and density in 3.3 V domains - neither replicates its unique combination of TTL input compatibility, hysteresis, and TSSOP20 footprint.
Availability
74HCT7541PW,118 is available at Aetrix Electronics and suitable for industrial motor control, automotive sensor hubs, legacy system integration, and test equipment requiring stable component supply across extended temperature ranges.
Supply support for 74HCT7541PW,118 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 semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET solutions - serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.
The 74HCT series delivers TTL-compatible logic with CMOS efficiency, designed specifically for robust 5 V system interfacing where noise immunity, bus contention control, and wide temperature operation are critical.
FAQ
Can 74HCT7541PW,118 operate at 3.3 V?
No. The 74HCT7541PW,118 is specified only for 4.5–5.5 V operation per JEDEC JESD8C. At 3.3 V, input thresholds fall outside TTL compatibility (VIH minimum becomes ~2.0 V, exceeding 3.3 V × 0.7), and output drive degrades below specification. Use 74LVC7541 for 3.3 V systems.
What is the maximum capacitive load this device can drive reliably?
The datasheet specifies dynamic characteristics up to 50 pF (CL = 50 pF). While it may function with higher loads, propagation delay increases linearly (~1 ns/pF), and transition times degrade beyond 15 ns. For >50 pF, add series termination or use a dedicated line driver with higher current capability.
How do OE1 and OE2 interact in 3-state control?
Both OE1 and OE2 must be LOW to enable outputs. If either is HIGH, all Y0–Y7 enter high-impedance state regardless of A0–A7 or the other OE. This dual-enable structure allows hardware-based bus arbitration - e.g., one OE tied to system reset, the other to address decoder output.
Is thermal derating required for continuous operation at +125 °C?
Yes. For the TSSOP20 (SOT360-1) package, total power dissipation derates linearly at 10.0 mW/K above +100 °C. At +125 °C, Ptot must be limited to 500 mW − (25 K × 10.0 mW/K) = 250 mW. This constrains maximum simultaneous output switching frequency and load capacitance.
74HCT7541PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- 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:
- Schmitt Trigger
- Output Type:
- 3-State
- Current - Output High, Low:
- 6mA, 6mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74HCT7541PW,118 FAQ
1.How can I place an order for 74HCT7541PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT7541PW,118 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 74HCT7541PW,118 reliable?
The price and inventory of 74HCT7541PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT7541PW,118 is usually 5 days.
3.What payment methods are accepted for 74HCT7541PW,118?
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74HCT7541PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT7541PW,118 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 74HCT7541PW,118?
For technical support, including 74HCT7541PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT7541PW,118 requirements.
6.How does Aetrix verify that 74HCT7541PW,118 is sourced from the original manufacturer or authorized distributors?
All 74HCT7541PW,118 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 74HCT7541PW,118 meets industry standards.
7.What is the process for return or replacement of 74HCT7541PW,118?
All 74HCT7541PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT7541PW,118, 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 74HCT7541PW,118 part is unused and in its original packaging.
Return procedure for 74HCT7541PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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