Overview
The 74HC4094DB,118 is an 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs, manufactured by Nexperia USA Inc. This component is part of the 74HC and 74HCT family of logic ICs. It features separate clocks for both the shift and storage registers, enabling flexible data manipulation. The device includes a serial input (D) and two serial outputs (QS1 and QS2) to facilitate cascading. Data is shifted on the LOW-to-HIGH transitions of the CP input, and the data in the shift register is transferred to the storage register when the STR input is HIGH. The outputs are in a high-impedance OFF-state when the output enable input (OE) is LOW, but become active when OE is HIGH.
Key Specifications
| Parameter | Description |
|---|---|
| Type Number | 74HC4094DB |
| Package Name | SSOP16 (SOT338-1) |
| Operating Temperature | -40°C to +125°C |
| Input Levels | CMOS level for 74HC4094, TTL level for 74HCT4094 |
| ESD Protection | HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V |
| Supply Voltage | Up to 6 V (typical 5 V) |
| Number of Bits | 8-bit |
| Output Type | 3-state outputs |
Key Features
- Complies with JEDEC standard JESD7A
- Low-power dissipation
- ESD protection: HBM exceeds 2000 V, CDM exceeds 1000 V
- 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 STR input HIGH
- 3-state outputs with output enable (OE) control
- Inputs include clamp diodes for voltage protection
Applications
- Serial-to-parallel data conversion
- Remote control holding register
Q & A
- What is the primary function of the 74HC4094DB,118? 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 input levels for the 74HC4094 and 74HCT4094? The 74HC4094 operates at CMOS levels, while the 74HCT4094 operates at TTL levels.
- What is the operating temperature range for this component? The operating temperature range is from -40°C to +125°C.
- How does the component protect against ESD? It has ESD protection exceeding 2000 V for HBM and 1000 V for CDM.
- What is the purpose of the QS1 and QS2 outputs? These outputs are used to enable cascading of the shift register.
- How is data transferred from the shift register to the storage register? Data is transferred when the STR input is HIGH.
- What happens to the outputs when the OE input is LOW? The outputs assume a high-impedance OFF-state.
- What package type is used for the 74HC4094DB,118? It is packaged in SSOP16 (SOT338-1).
- What are some common applications of this component? Common applications include serial-to-parallel data conversion and remote control holding registers.
- Is the 74HC4094DB,118 still in production? No, the 74HC4094DB,118 is listed as obsolete or end-of-life.
