Overview
The 74HCT4851PW/C4118 is an 8-channel analog multiplexer/demultiplexer produced by Nexperia, a leading semiconductor company. This high-speed Si-gate CMOS device is specified in compliance with JEDEC standard no. 7A and is particularly valued for its performance in automotive and other demanding applications.
The device features three digital select inputs (S0 to S2), an active-LOW enable input (E), eight independent inputs/outputs (Y0 to Y7), and a common input/output (Z). It is notable for its injection-current effect control, which allows signals at disabled analog input channels to exceed the supply voltage without affecting the signal of the enabled analog channel.
Key Specifications
| Parameter | Value |
|---|---|
| Type Number | 74HCT4851PW |
| Configuration | SP8T-Z |
| VCC (V) | 4.5 - 5.5 |
| Logic Switching Levels | TTL |
| RON (Ω) | 240 (typical at VCC = 5 V) |
| Injection-Current Cross Coupling | < 1 mV/mA |
| Operating Temperature (°C) | -40 to 125 |
| Package | TSSOP16 (SOT403-1) |
| Latch-up Performance | Exceeds 100 mA per JESD 78 Class II level A |
Key Features
- Injection-Current Effect Control: Allows signals at disabled analog input channels to exceed the supply voltage without affecting the signal of the enabled analog channel.
- Low ON-State Resistance: Varies from 59 Ω at VCC = 6.0 V to 400 Ω at VCC = 2.0 V.
- Wide Supply Voltage Range: Operates from 4.5 V to 5.5 V.
- High-Speed Operation: Compliant with JEDEC standard no. 7A.
- ESD Protection: Built-in protection against electrostatic discharge.
Applications
The 74HCT4851PW/C4118 is particularly suited for automotive applications due to its ability to handle voltages in excess of the supply voltage. It is also useful in various other applications requiring high-speed analog switching, such as:
- Automotive systems
- Industrial control systems
- Medical devices
- Telecommunication equipment
Q & A
- What is the primary function of the 74HCT4851PW/C4118?
The primary function is to act as an 8-channel analog multiplexer/demultiplexer.
- What is the significance of injection-current effect control in this device?
This feature allows signals at disabled analog input channels to exceed the supply voltage without affecting the signal of the enabled analog channel.
- What is the operating voltage range for the 74HCT4851PW/C4118?
The device operates from 4.5 V to 5.5 V.
- What is the typical ON-state resistance of the 74HCT4851PW/C4118?
The typical ON-state resistance varies from 59 Ω at VCC = 6.0 V to 400 Ω at VCC = 2.0 V.
- What package type is the 74HCT4851PW/C4118 available in?
The device is available in a TSSOP16 (SOT403-1) package.
- What is the operating temperature range for this device?
The operating temperature range is from -40°C to 125°C.
- Does the 74HCT4851PW/C4118 have built-in ESD protection?
- What are some common applications for the 74HCT4851PW/C4118?
- How does the device handle latch-up performance?
The device exceeds 100 mA per JESD 78 Class II level A for latch-up performance.
- Can I order samples of the 74HCT4851PW/C4118?
