Overview
The CD74HCT4094M96G4, produced by Texas Instruments, is a High-Speed CMOS Logic 8-stage shift-and-store bus register. This component is part of the CD74HCT series, which is designed for compatibility with TTL (Transistor-Transistor Logic) input levels. It features an 8-stage serial shift register with a storage latch associated with each stage, allowing for the transfer of data from the serial input to parallel buffered tri-state outputs. The device supports cascading through separate serial outputs synchronous to both positive and negative clock edges.
Key Specifications
| Parameter | Value | Units | Conditions |
|---|---|---|---|
| Operating Voltage Range | 4.5 to 5.5 | V | HCT Types |
| High-Level Input Voltage (VIH) | 2 | V | VCC = 5 V |
| Low-Level Input Voltage (VIL) | 0.8 | V | VCC = 5 V |
| High-Level Output Voltage (VOH) - CMOS Loads | 4.4 | V | IOH = –20μA |
| Low-Level Output Voltage (VOL) - CMOS Loads | 0.1 | V | IOL = 20μA |
| Input Leakage Current (II) | ±1 | μA | VCC and GND |
| Supply Current (ICC) | 8 to 160 | μA | VCC and GND |
| Maximum CP Frequency | 60 | MHz | CL = 15pF |
| Operating Temperature Range | −55°C to 125°C | °C | |
| Package Type | SOIC (16 pins) |
Key Features
- Buffered Inputs: Ensures stable input signals.
- Separate Serial Outputs: Synchronous to both positive and negative clock edges for cascading multiple devices.
- Wide Operating Temperature Range: From −55°C to 125°C, making it suitable for various environmental conditions.
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5 V for HC types.
- TTL Input Compatibility: Direct LSTTL input logic compatibility for HCT types.
- Low Power Consumption: Significant power reduction compared to LSTTL logic ICs.
- Tri-State Outputs: Parallel outputs can be connected directly to common bus lines and can be set to a high-impedance state.
- Balanced Propagation Delay and Transition Times: Ensures consistent and reliable operation.
Applications
- Serial-to-Parallel Data Conversion: Ideal for converting serial data streams into parallel data formats.
- Cascaded Systems: Suitable for systems requiring multiple stages of shift registers.
- Bus Systems: Can be used in bus-oriented systems where data needs to be transferred between different parts of the system.
- Industrial Control Systems: Applicable in environments requiring robust and reliable data transfer over a wide temperature range.
- Embedded Systems: Useful in embedded systems that require efficient and low-power data processing.
Q & A
- What is the operating voltage range of the CD74HCT4094M96G4?
The operating voltage range is from 4.5 to 5.5 volts.
- What is the maximum clock frequency for this device?
The maximum clock frequency is 60 MHz with a load capacitance of 15 pF.
- How many stages does the shift register have?
The shift register has 8 stages.
- What is the purpose of the Strobe input?
The Strobe input is used to transfer data from the shift register stage to the storage register when it is high.
- Can the parallel outputs be connected directly to common bus lines?
Yes, the parallel outputs can be connected directly to common bus lines.
- What is the fanout capability of the device?
The device can drive up to 10 LSTTL loads for standard outputs and up to 15 LSTTL loads for bus driver outputs.
- Is the CD74HCT4094M96G4 compatible with TTL input levels?
Yes, it is designed for direct LSTTL input logic compatibility.
- What is the package type of the CD74HCT4094M96G4?
The package type is SOIC (16 pins).
- What is the operating temperature range of the device?
The operating temperature range is from −55°C to 125°C.
- How does the device handle noise immunity?
The device has high noise immunity with NIL = 30%, NIH = 30% of VCC at VCC = 5 V for HC types.
