Overview
The 74HCT594DB,118 is an 8-bit serial-in/serial or parallel-out shift register with a storage register, manufactured by Nexperia USA Inc. This device is part of the 74HCT series, which is compatible with TTL (Transistor-Transistor Logic) input levels. It features separate clock and reset inputs for both the shift and storage registers, enabling flexible data manipulation and storage.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC Supply Voltage | - | 2.0 | - | 6.0 | V |
| VIH HIGH-level Input Voltage | VCC = 6.0 V | 4.2 | 3.2 | - | V |
| VIL LOW-level Input Voltage | VCC = 6.0 V | - | 2.8 | 1.8 | V |
| SHCP to Q7S Propagation Delay | VCC = 4.5 V, CL = 50 pF | 16 | 30 | 45 | ns |
| STCP to Qn Propagation Delay | VCC = 4.5 V, CL = 50 pF | 16 | 30 | 45 | ns |
| fmax Maximum Frequency | VCC = 6.0 V | 35 | 109 | - | MHz |
| Operating Temperature Range | - | -40 | - | 125 | °C |
| Package Type | - | - | - | SO16 (SOT109-1) | - |
Key Features
- Synchronous serial input and output.
- 8-bit parallel output.
- Independent clocks and direct clear inputs for shift and storage registers.
- Wide supply voltage range from 2.0 V to 6.0 V.
- CMOS low power dissipation.
- High noise immunity.
- Latch-up performance exceeds 100 mA per JESD 78 Class II Level B.
- ESD protection: HBM exceeds 2000 V, CDM exceeds 1000 V.
- Multiple package options, including SO16 and TSSOP16.
Applications
- Serial-to-parallel data conversion.
- Remote control holding register.
- Cascading shift registers for larger data storage.
- General-purpose data storage and manipulation in digital systems.
Q & A
- What is the primary function of the 74HCT594DB,118? The primary function is to act as an 8-bit serial-in/serial or parallel-out shift register with a storage register.
- What are the input voltage levels for the 74HCT594DB,118? The device is compatible with TTL input levels.
- What is the range of the supply voltage for this device? The supply voltage range is from 2.0 V to 6.0 V.
- How does data shifting occur in the 74HCT594DB,118? Data is shifted on the LOW-to-HIGH transitions of the SHCP input.
- What is the maximum frequency of operation for the 74HCT594DB,118? The maximum frequency is up to 109 MHz at VCC = 6.0 V.
- What type of ESD protection does the 74HCT594DB,118 have? The device has HBM ESD protection exceeding 2000 V and CDM ESD protection exceeding 1000 V.
- What are the operating temperature ranges for the 74HCT594DB,118? The operating temperature range is from -40 °C to +125 °C.
- Can the 74HCT594DB,118 be cascaded with other shift registers? Yes, it can be cascaded using the serial input (DS) and serial output (Q7S).
- What package types are available for the 74HCT594DB,118? The device is available in SO16 (SOT109-1) and other package types.
- Is the 74HCT594DB,118 RoHS compliant? Yes, the device is RoHS compliant.
