Overview
The 74HCT4851PW-Q100,1 is an 8-channel analog multiplexer/demultiplexer produced by Nexperia USA Inc. This high-speed Si-gate CMOS device is designed to meet the stringent requirements of automotive and other high-reliability applications. It 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). The device is qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and operates over a wide temperature range from -40 °C to +125 °C.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Type Number | 74HCT4851PW-Q100 | |
| Configuration | SP8T-Z | Single Pole, 8 Throw with common input/output |
| VCC (V) | 4.5 - 5.5 | Supply voltage range |
| RON (Ω) | 59 Ω (typical) at VCC = 6.0 V | ON-state resistance |
| Logic Switching Levels | TTL | Transistor-Transistor Logic |
| Switch Time (Ton, Toff) (Max) | 25 ns, 80 ns | |
| ESD Protection | HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V | |
| Package | 16-TSSOP (0.173, 4.40mm Width) | |
| Temperature Range | -40 °C to +125 °C |
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, eliminating the need for external diode/resistor networks.
- Low ON-State Resistance: Typical values ranging from 400 Ω at VCC = 2.0 V to 59 Ω at VCC = 6.0 V.
- High ESD Protection: Human Body Model (HBM) exceeds 2000 V and Charged Device Model (CDM) exceeds 1000 V.
- Wide Supply Voltage Range: Operates from 2.0 V to 6.0 V.
- AEC-Q100 Qualified: Meets the Automotive Electronics Council standard Q100 (Grade 1) for automotive applications.
Applications
The 74HCT4851PW-Q100,1 is particularly suited for automotive applications due to its AEC-Q100 qualification and ability to handle voltages in excess of the supply voltage. It is also useful in other high-reliability applications such as industrial control systems, medical devices, and aerospace.
Q & A
- What is the primary function of the 74HCT4851PW-Q100,1?
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 enabled channel, eliminating the need for external protection circuits.
- What is the operating temperature range of the 74HCT4851PW-Q100,1?
The device operates from -40 °C to +125 °C.
- What are the typical ON-state resistances of the device?
The typical ON-state resistances range from 400 Ω at VCC = 2.0 V to 59 Ω at VCC = 6.0 V.
- What is the logic switching level of the 74HCT4851PW-Q100,1?
The device uses Transistor-Transistor Logic (TTL) levels.
- What kind of ESD protection does the device offer?
The device offers HBM protection exceeding 2000 V and CDM protection exceeding 1000 V.
- What package options are available for the 74HCT4851PW-Q100,1?
The device is available in a 16-TSSOP package.
- Is the 74HCT4851PW-Q100,1 qualified for automotive use?
Yes, it is qualified to the AEC-Q100 standard (Grade 1).
- What are some typical applications of the 74HCT4851PW-Q100,1?
Automotive, industrial control systems, medical devices, and aerospace applications.
- How does the enable input (E) affect the switches?
With E LOW, one of the eight switches is selected; with E HIGH, all switches are in the high-impedance OFF-state.
