Overview
The CD74HC165M96 is an 8-bit parallel or serial-in shift register produced by Texas Instruments. This component is part of the HC165 series, which includes both HC and HCT types, each with distinct operating voltage ranges and input compatibility. The CD74HC165M96 is specifically designed for high-speed CMOS logic applications, offering buffered inputs, asynchronous parallel load, and complementary serial outputs. It operates over a wide temperature range from -55°C to 125°C, making it versatile for various environments.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| VCC Supply Voltage | V | 2 | - | 6 |
| VIH High Level Input Voltage (VCC = 5V) | V | 3.15 | - | 4.2 |
| VIL Low Level Input Voltage (VCC = 5V) | V | 1.35 | - | 1.8 |
| VOH High Level Output Voltage (IOH = -20 μA, VCC = 5V) | V | 4.4 | - | 4.4 |
| VOL Low Level Output Voltage (IOL = 20 μA, VCC = 5V) | V | 0.1 | - | 0.1 |
| tWL, tWH CLK Pulse Width (VCC = 5V) | ns | 16 | - | 20 |
| tSU Set-up Time SER to CLK (VCC = 5V) | ns | 16 | - | 20 |
| fMAX Maximum Clock Pulse Frequency (VCC = 5V) | MHz | 22 | - | 27 |
| TJ Junction Temperature | °C | - | - | 150 |
| Tstg Storage Temperature | °C | -65 | - | 150 |
Key Features
- Buffered inputs
- Asynchronous parallel load
- Complementary serial outputs (QH and Q̄H)
- Fanout capability: 10 LSTTL loads for standard outputs, 15 LSTTL loads for bus driver outputs
- Wide operating temperature range: -55°C to 125°C
- Balanced propagation delay and transition times
- Significant power reduction compared to LSTTL logic ICs
- HC types: 2 V to 6 V operation, high noise immunity
- HCT types: 4.5 V to 5.5 V operation, direct LSTTL input logic compatibility
Applications
- Parallel-to-serial data conversion
- Serial data transmission and reception
- Shift register applications in digital logic circuits
- Expansion of parallel-to-serial converters by connecting QH output to the SER input of the succeeding device
- General-purpose digital logic circuits requiring high-speed CMOS logic
Q & A
- What is the operating voltage range for the CD74HC165M96?
The CD74HC165M96 operates within a supply voltage range of 2 V to 6 V.
- What is the maximum clock pulse frequency for the CD74HC165M96?
The maximum clock pulse frequency is up to 27 MHz at VCC = 5 V.
- What are the input voltage levels for the CD74HC165M96?
The high-level input voltage (VIH) is typically 3.15 V, and the low-level input voltage (VIL) is typically 1.35 V at VCC = 5 V.
- What is the fanout capability of the CD74HC165M96?
The fanout capability is 10 LSTTL loads for standard outputs and 15 LSTTL loads for bus driver outputs.
- What is the temperature range for the CD74HC165M96?
The operating temperature range is from -55°C to 125°C.
- How does the parallel load feature 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 are the complementary serial outputs?
The CD74HC165M96 provides complementary serial outputs (QH and Q̄H) available from the last stage.
- Can the CD74HC165M96 be used for serial data transmission?
- How can multiple CD74HC165M96 devices be connected for expansion?
Multiple devices can be connected by linking the QH output of one device to the SER input of the succeeding device.
- What are the recommended power supply considerations?
A good bypass capacitor (e.g., 0.1-μF) should be used close to the power terminal to prevent power disturbances.
