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 4000 series of CMOS logic integrated circuits and is designed for a wide range of digital applications. It features separate clocks for both the shift and storage registers, enabling flexible data manipulation. The HEF4094BT is known for its low power dissipation, high noise immunity, and standardized symmetrical output characteristics, making it a reliable choice for various electronic systems.
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
- 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs.
- Separate clocks for shift and storage registers.
- Serial input (D) and two serial outputs (QS1 and QS2) for cascading.
- Data shifted on LOW-to-HIGH transitions of the CP input.
- Data transfer from shift register to storage register when STR input is HIGH.
- Output enable input (OE) controls the state of the outputs.
- Inputs include clamp diodes for interfacing with voltages in excess of VDD.
- Fully static operation.
- Wide supply voltage range from 3.0 V to 15.0 V.
- CMOS low power dissipation.
- High noise immunity.
- Standardized symmetrical output characteristics.
- Complies with JEDEC standard JESD 13-B.
- ESD protection: HBM ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V.
Applications
The HEF4094BT is suitable for a variety of digital applications, including:
- Serial-to-parallel data conversion.
- Parallel-to-serial data conversion.
- Data storage and retrieval in digital systems.
- Cascading shift registers for extended data handling.
- Digital counters and timers.
- Control and sequencing circuits.
Q & A
- What is the primary function of the HEF4094BT?
The HEF4094BT is 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 supply voltage range is from 3.0 V to 15.0 V.
- How does data transfer occur 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 purpose of the QS1 and QS2 outputs?
The QS1 and QS2 outputs are provided for cascading multiple HEF4094B devices, allowing for both fast and slow clock rise times.
- What is the effect of the OE input on the outputs?
A HIGH on the OE input causes the data from the storage register to appear at the outputs, while a LOW causes the outputs to assume a high-impedance OFF-state.
- What are the ESD protection levels for the HEF4094BT?
The device has ESD protection: HBM ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V.
- What is the operating temperature range for the HEF4094BT?
The operating temperature range is from -40°C to +85°C, and it is also specified from -40°C to +125°C for certain conditions.
- What type of logic does the HEF4094BT use?
The device uses CMOS logic.
- What is the maximum total power dissipation for the HEF4094BT?
The maximum total power dissipation is 500 mW.
- What package type is the HEF4094BT available in?
The device is available in an SO16 (SOT109-1) package.
- Is the HEF4094BT RoHS compliant?
Yes, the HEF4094BT is lead-free and RoHS compliant.
