Overview
The SN74HCS09-Q1, produced by Texas Instruments, is a quadruple 2-input AND gate with open-drain outputs and Schmitt-trigger inputs. This device is AEC-Q100 qualified for automotive applications, ensuring it can operate within a temperature range of –40°C to +125°C. It features a wide operating voltage range from 2 V to 6 V, making it versatile for various digital logic applications. Each of the four independent gates performs the Boolean function Y = A ● B in positive logic, making it suitable for combining power good signals, enabling digital signals, and other logic operations.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | -0.5 | - | 7 | V |
| Propagation Delay (A or B to Y) | 9 | 11 | 15 | ns (at 6 V) |
| Transition Time (Y) | 4 | 8 | - | ns (at 6 V) |
| Output Drive Current | - | - | ±7.8 | mA (at 5 V) |
| Input Leakage Current | - | ±100 | - | nA |
| Junction Temperature | - | - | 150 | °C |
| Storage Temperature | -65 | - | 150 | °C |
Key Features
- AEC-Q100 qualified for automotive applications with a temperature range of –40°C to +125°C.
- Wide operating voltage range: 2 V to 6 V.
- Schmitt-trigger inputs to handle slow or noisy input signals.
- Low power consumption with typical ICC of 100 nA and typical input leakage current of ±100 nA.
- Open-drain CMOS outputs capable of driving larger currents, with ±7.8-mA output drive at 5 V.
- Inputs and outputs have both positive and negative clamping diodes for protection.
- No input signal transition rate requirements due to Schmitt-trigger inputs, which also reject noise.
Applications
- Combining power good signals.
- Enabling digital signals.
- Direct control of the RESET pin of a motor controller, requiring multiple input signals to be HIGH before enabling.
- Implementing 4-input AND gate functions by combining two 2-input AND gates.
- Automotive systems due to AEC-Q100 qualification.
Q & A
- What is the operating temperature range of the SN74HCS09-Q1?
The SN74HCS09-Q1 operates within a temperature range of –40°C to +125°C.
- What is the voltage range for the SN74HCS09-Q1?
The device operates within a voltage range of 2 V to 6 V.
- What type of inputs does the SN74HCS09-Q1 have?
The device features Schmitt-trigger inputs.
- What is the typical power consumption of the SN74HCS09-Q1?
The typical ICC (continuous current through VCC or GND) is 100 nA.
- Can the outputs of the SN74HCS09-Q1 be connected together?
- What is the maximum output drive current of the SN74HCS09-Q1 at 5 V?
The maximum output drive current is ±7.8 mA at 5 V.
- How do the Schmitt-trigger inputs handle noisy signals?
The Schmitt-trigger inputs can reject noise and handle slow or noisy input signals effectively.
- What is the junction temperature limit for the SN74HCS09-Q1?
The junction temperature should not exceed 150°C.
- Can unused inputs be left floating?
No, unused inputs should be tied to either GND or VCC, depending on the logic function required.
- What is the purpose of the clamping diodes in the SN74HCS09-Q1?
The clamping diodes protect the inputs and outputs from voltage beyond the specified ratings.
