Overview
The 74HC4094D/AUJ, 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 integrated circuit is designed for various digital logic applications, particularly where serial-to-parallel data conversion is necessary. It features separate clocks for both the shift and storage registers, enabling flexible data manipulation and storage.
Key Specifications
| Type Number | VCC (V) | Logic Switching Levels | Output Drive Capability (mA) | tpd (ns) | fmax (MHz) | Number of Bits | Power Dissipation Considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package Name |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 74HC4094D | 2.0 - 6.0 | CMOS | ± 5.2 | 15 | 95 | 8 | Low | -40 to +125 | 89 | 8.1 | 48 | SO16 (SOT109-1) |
Key Features
- 8-bit serial-in/serial or parallel-out shift register with a storage register.
- 3-state outputs.
- Separate clocks for shift and storage registers.
- Serial input (D) and two serial outputs (QS1 and QS2) for cascading.
- Data transfer from shift register to storage register on HIGH STR input.
- Output enable input (OE) controls output state without affecting register state.
- Low-power dissipation.
- ESD protection: HBM (ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V), CDM (ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V).
- Complies with JEDEC standard JESD7A.
Applications
- Serial-to-parallel data conversion.
- Remote control holding registers.
- Digital logic circuits requiring shift and storage operations.
- Cascading shift registers for extended data handling.
- General-purpose digital circuitry where low power consumption and high-speed operation are required.
Q & A
- What is the primary function of the 74HC4094D/AUJ? The primary function is to act as an 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs.
- What are the logic switching levels for the 74HC4094D/AUJ? The logic switching levels are CMOS for the 74HC4094D and TTL for the 74HCT4094.
- What is the output drive capability of the 74HC4094D/AUJ? The output drive capability is ± 5.2 mA.
- What is the maximum operating frequency of the 74HC4094D/AUJ? The maximum operating frequency is 95 MHz.
- What is the temperature range for the 74HC4094D/AUJ? The specified temperature range is from -40 °C to +125 °C.
- Does the 74HC4094D/AUJ have ESD protection? Yes, it 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).
- 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 effect of the OE input on the outputs? A LOW on the OE input causes the outputs to assume a high-impedance OFF-state without affecting the state of the registers.
- Can the 74HC4094D/AUJ be cascaded? Yes, it can be cascaded using the serial outputs QS1 and QS2.
- What package type is the 74HC4094D/AUJ available in? It is available in the SO16 (SOT109-1) package.
