Overview
The 74HC7540DB,118, produced by Nexperia USA Inc., is an 8-bit inverting buffer/line driver with Schmitt-trigger inputs and 3-state outputs. This device is part of the 74HC and 74HCT series, known for their high noise immunity and low power dissipation. It features two output enables (OE1 and OE2), allowing the outputs to assume a high-impedance OFF-state when either enable is set to HIGH. The Schmitt trigger inputs are designed to transform slowly changing input signals into sharply defined, jitter-free output signals, making it suitable for a variety of applications requiring stable and reliable signal transmission.
Key Specifications
| Parameter | Description | Min | Typ | Max |
|---|---|---|---|---|
| Supply Voltage (VCC) | Operating voltage range | 2.0 V | - | 6.0 V |
| Input Levels | For 74HC7540: CMOS level, For 74HCT7540: TTL level | - | - | - |
| Propagation Delay (tpd) | At VCC = 2.0 V, CL = 50 pF | 39 ns | - | 120 ns |
| Propagation Delay (tpd) | At VCC = 4.5 V, CL = 50 pF | 14 ns | - | 24 ns |
| Supply Current (ICC) | At VCC = 6.0 V, IO = 0 A | - | 8.0 μA | 80 μA |
| ESD Protection | HBM: ANSI/ESDA/JEDEC JS-001 class 2 | - | - | > 2000 V |
| ESD Protection | CDM: ANSI/ESDA/JEDEC JS-002 class C3 | - | - | > 1000 V |
| Operating Temperature | - | -40 °C | - | +125 °C |
| Package | SSOP20 (SOT339-1) | - | - | - |
Key Features
- Wide Supply Voltage Range: Operates from 2.0 V to 6.0 V.
- Low Power Dissipation: CMOS technology ensures low power consumption.
- High Noise Immunity: Schmitt trigger inputs provide high noise immunity and transform slowly changing input signals into sharply defined, jitter-free output signals.
- 3-State Outputs: Outputs can be set to a high-impedance OFF-state using the output enables (OE1 and OE2).
- Inverting Outputs: The device provides inverting outputs.
- ESD Protection: High ESD protection levels (HBM > 2000 V, CDM > 1000 V).
- Compliance with JEDEC Standards: Complies with JESD8C (2.7 V to 3.6 V) and JESD7A (2.0 V to 6.0 V) standards.
- Latch-Up Performance: Exceeds 100 mA per JESD 78 Class II Level B.
Applications
The 74HC7540DB,118 is versatile and can be used in a variety of applications across different industries, including:
- Automotive Systems: For signal buffering and line driving in automotive electronics.
- Industrial Control Systems: To ensure reliable signal transmission in industrial control environments.
- Consumer Electronics: In devices requiring stable and noise-immune signal processing.
- Computing and Data Transmission: For buffering and driving signals in computing and data transmission systems.
- Mobile and Wearable Devices: Where low power consumption and high noise immunity are crucial.
Q & A
- What is the primary function of the 74HC7540DB,118?
The primary function is to act as an 8-bit inverting buffer/line driver with Schmitt-trigger inputs and 3-state outputs.
- What is the supply voltage range for the 74HC7540DB,118?
The device operates from 2.0 V to 6.0 V.
- What type of input levels does the 74HC7540 support?
The 74HC7540 supports CMOS level inputs, while the 74HCT7540 supports TTL level inputs.
- How do the Schmitt trigger inputs benefit the device?
Schmitt trigger inputs transform slowly changing input signals into sharply defined, jitter-free output signals, enhancing noise immunity.
- What is the purpose of the output enables (OE1 and OE2)?
The output enables allow the outputs to assume a high-impedance OFF-state when set to HIGH.
- What is the ESD protection level of the 74HC7540DB,118?
The device has ESD protection exceeding 2000 V (HBM) and 1000 V (CDM).
- What are the operating temperature ranges for the 74HC7540DB,118?
The device operates from -40 °C to +85 °C and from -40 °C to +125 °C.
- What package options are available for the 74HC7540DB,118?
The device is available in SSOP20 (SOT339-1) package.
- Does the 74HC7540DB,118 comply with any industry standards?
Yes, it complies with JEDEC standards JESD8C and JESD7A.
- What is the latch-up performance of the 74HC7540DB,118?
The latch-up performance exceeds 100 mA per JESD 78 Class II Level B.
