Overview
The HEF4094BT, produced by NXP USA Inc., is an 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs. This device is part of the HEF4000 family and is designed for use in a variety of digital logic applications. It features separate clocks for both the shift and storage registers, enabling flexible data manipulation. The HEF4094BT is suitable for systems requiring serial data input and parallel data output, with the capability to cascade multiple devices.
Key Specifications
| Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | fmax (MHz) | Nr of bits | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HEF4094BT | 3.0 - 15 | CMOS | ± 2.4 | 50 | 28 | 8 | medium | -40~85 | 89 | 8.1 | 48 | SO16 |
Key Features
- Serial-in/Serial or Parallel-out Shift Register: Allows for both serial and parallel data output.
- Storage Register: Data can be transferred from the shift register to the storage register.
- 3-State Outputs: Outputs can be set to high-impedance state when the output enable input (OE) is LOW.
- Separate Clocks: Independent clocks for shift and storage registers.
- Cascading Capability: Serial inputs and outputs enable cascading of multiple devices.
- Wide Supply Voltage Range: Operates from 3.0 V to 15.0 V.
- Low Power Dissipation: CMOS technology for low power consumption.
- High Noise Immunity: Enhanced noise immunity due to CMOS design.
- ESD Protection: Human Body Model (HBM) exceeds 2000 V and Charged Device Model (CDM) exceeds 1000 V.
Applications
- Digital Logic Circuits: Suitable for various digital logic applications requiring serial-to-parallel data conversion.
- Data Storage and Transfer: Used in systems that need to store and transfer data in serial and parallel formats.
- Cascaded Systems: Ideal for cascading multiple shift registers to handle larger data sets.
- Automotive and Industrial Control Systems: Can be used in automotive and industrial control systems due to its robust ESD protection and wide operating temperature range.
Q & A
- What is the primary function of the HEF4094BT?
The primary function of the HEF4094BT is to act as an 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs.
- What is the supply voltage range for the HEF4094BT?
The HEF4094BT operates within a supply voltage range of 3.0 V to 15.0 V.
- How does the HEF4094BT handle data transfer between the shift and storage registers?
Data is transferred from the shift register to the storage register when the STR input is HIGH.
- What is the significance of the 3-state outputs in the HEF4094BT?
The 3-state outputs can be set to a high-impedance state when the output enable input (OE) is LOW, allowing for bus sharing and reducing power consumption.
- Can the HEF4094BT be cascaded with other devices?
Yes, the HEF4094BT can be cascaded using its serial inputs and outputs to handle larger data sets.
- What is the maximum clock frequency for the HEF4094BT?
The maximum clock frequency for the HEF4094BT is 28 MHz.
- What type of ESD protection does the HEF4094BT offer?
The HEF4094BT offers ESD protection with Human Body Model (HBM) exceeding 2000 V and Charged Device Model (CDM) exceeding 1000 V.
- What is the operating temperature range for the HEF4094BT?
The operating temperature range for the HEF4094BT is from -40 °C to +85 °C and up to +125 °C for certain specifications.
- What package type is the HEF4094BT available in?
The HEF4094BT is available in a SO16 (SOT109-1) package.
- Is the HEF4094BT RoHS compliant?
Yes, the HEF4094BT is RoHS compliant.
