Overview
The CD74HC165M96G4 is an 8-bit parallel or serial-in shift register produced by Texas Instruments. This component is part of the HC165 and HCT165 series, known for their high-speed CMOS logic capabilities. The device features buffered inputs, asynchronous parallel load, and complementary serial outputs, making it versatile for various digital circuit applications. It operates over a wide temperature range from -55°C to 125°C and is available in several package types, including SOIC (Small Outline Integrated Circuit).
Key Specifications
| Parameter | Test Conditions | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| VCC Supply Voltage | - | V | -0.5 | - | 7 |
| Input Diode Current (IIK) | VI < -0.5 V or VI > VCC + 0.5 V | mA | -20 | - | 20 |
| Output Diode Current (IOK) | VO < -0.5 V or VO > VCC + 0.5 V | mA | -20 | - | 20 |
| Output Source or Sink Current (IO) | VO > -0.5 V or VO < VCC + 0.5 V | mA | -25 | - | 25 |
| Junction Temperature (TJ) | - | °C | - | - | 150 |
| Storage Temperature (Tstg) | - | °C | -65 | - | 150 |
| High Level Input Voltage (VIH) at VCC = 5V | - | V | 3.15 | - | 4.2 |
| Low Level Input Voltage (VIL) at VCC = 5V | - | V | 1.35 | - | 1.8 |
| High Level Output Voltage (VOH) at IOH = -20 μA | - | V | 4.4 | - | 4.4 |
| Low Level Output Voltage (VOL) at IOL = 20 μA | - | V | 0.1 | - | 0.1 |
| Clock Pulse Width (tWL) | VCC = 5V | ns | 16 | - | 20 |
| Maximum Clock Pulse Frequency (fMAX) | VCC = 5V | MHz | 22 | - | 27 |
Key Features
- Buffered Inputs: Ensures stable input signals.
- Asynchronous Parallel Load: Allows loading of parallel data into the register without the need for a clock signal.
- Complementary Serial Outputs: Provides both Q and Q̄ outputs from the last stage of the shift register.
- Wide Operating Temperature Range: Operates from -55°C to 125°C.
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V for HC types.
- Direct LSTTL Input Logic Compatibility: For HCT types, with VIL = 0.8 V (Max) and VIH = 2 V (Min).
- CMOS Input Compatibility: II ≤ 1 μA at VOL, VOH for HCT types.
- Significant Power Reduction: Compared to LSTTL logic ICs.
- Parallel-to-Serial Converter Expansion: By connecting the QH output to the SER input of the succeeding device.
Applications
- Digital Circuit Design: Useful in various digital circuits requiring data shifting and storage.
- Parallel-to-Serial Conversion: Ideal for converting parallel data to serial data streams.
- Serial Data Transmission: Suitable for applications involving serial data transmission and reception.
- Embedded Systems: Can be used in embedded systems requiring efficient data handling and storage.
- Automated Systems: Applicable in automated systems where data needs to be processed and transmitted serially.
Q & A
- What is the CD74HC165M96G4?
The CD74HC165M96G4 is an 8-bit parallel or serial-in shift register produced by Texas Instruments.
- What are the key features of the CD74HC165M96G4?
Key features include buffered inputs, asynchronous parallel load, complementary serial outputs, and a wide operating temperature range.
- What are the operating voltage ranges for the CD74HC165M96G4?
The HC types operate from 2 V to 6 V, while the HCT types operate from 4.5 V to 5.5 V.
- How does the parallel load function work?
When the parallel load (SH/LD) input is LOW, parallel data from the A to H inputs are loaded into the register asynchronously.
- What is the maximum clock pulse frequency for the CD74HC165M96G4?
The maximum clock pulse frequency is 27 MHz at VCC = 5V.
- What are the package types available for the CD74HC165M96G4?
The component is available in SOIC (Small Outline Integrated Circuit), PDIP (Plastic Dual In-Line Package), and CERDIP (Ceramic Dual In-Line Package) types.
- How does the complementary serial output work?
The device provides both Q and Q̄ outputs from the last stage of the shift register, allowing for complementary serial data output.
- What is the significance of the fanout capability?
The fanout capability allows the device to drive multiple LSTTL loads, with standard outputs capable of driving up to 10 LSTTL loads.
- Can the CD74HC165M96G4 be used in high-temperature environments?
Yes, it operates over a wide temperature range from -55°C to 125°C.
- How can the CD74HC165M96G4 be expanded for parallel-to-serial conversion?
By connecting the QH output to the SER input of the succeeding device, allowing for parallel-to-serial converter expansion.
