Overview
The 74LV4094PW is an 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs, manufactured by NXP Semiconductors (now part of Nexperia). This device is designed for a wide range of digital logic applications, featuring separate clocks for both the shift and storage registers. It includes a serial input (D) and two serial outputs (QS1 and QS2) to facilitate cascading. The data in the shift register is transferred to the storage register when the STR input is HIGH, and the data in the storage register appears at the outputs whenever the output enable input (OE) is HIGH.
Key Specifications
| Parameter | Value |
|---|---|
| Type number | 74LV4094PW |
| VCC (V) | 1.0 - 3.6 |
| Logic switching levels | TTL |
| Output drive capability (mA) | ± 6 |
| tpd (ns) | 14 |
| fmax (MHz) | 95 |
| Number of bits | 8 |
| Power dissipation considerations | Low |
| Tamb (°C) | -40 to +125 |
| Rth(j-a) (K/W) | 115 |
| Ψth(j-top) (K/W) | 2.4 |
| Rth(j-c) (K/W) | 44 |
| Package name | TSSOP16 (SOT403-1) |
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 transfer from shift register to storage register on HIGH STR input.
- Output enable input (OE) controls the output state.
- Operates over a wide temperature range from -40 °C to +125 °C.
- Low power dissipation.
Applications
- Serial-to-parallel data conversion.
- Remote control holding registers.
- General-purpose digital logic circuits.
- Cascaded shift register applications.
- Bus register applications requiring separate clock controls.
Q & A
- What is the primary function of the 74LV4094PW? 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 operating voltage ranges for the 74LV4094PW? The device operates from 1.0 V to 3.6 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 OE input? The OE input controls the output state; a HIGH OE enables the outputs, while a LOW OE puts the outputs in a high-impedance OFF-state.
- Can the 74LV4094PW be cascaded? Yes, it can be cascaded using the serial outputs QS1 and QS2.
- What is the maximum operating frequency of the 74LV4094PW? The maximum operating frequency is 95 MHz.
- What is the package type of the 74LV4094PW? The package type is TSSOP16 (SOT403-1).
- Is the 74LV4094PW RoHS compliant? Yes, the 74LV4094PW is RoHS compliant.
- What are the temperature ranges for which the 74LV4094PW is specified? The device is specified to operate from -40 °C to +125 °C.
- What is the output drive capability of the 74LV4094PW? The output drive capability is ± 6 mA.
