Overview
The CD74HC374M96 is a high-speed CMOS logic octal D-type flip-flop produced by Texas Instruments. This component is part of the 74HC series, known for its high noise immunity and significant power reduction compared to LSTTL logic ICs. The device features eight edge-triggered flip-flops with 3-state outputs, enabling it to drive 15 LSTTL loads. The output enable (OE) control is independent of the register operation, allowing the outputs to be in a high-impedance state when OE is HIGH. This makes the CD74HC374M96 versatile for various digital circuit applications.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC Supply Voltage | 2 | 6 | V | ||
| VIH High Level Input Voltage | VCC = 5 V | 3.15 | 4.2 | V | |
| VIL Low Level Input Voltage | VCC = 5 V | 1.35 | 1.8 | V | |
| VOH High Level Output Voltage | IOH = -20 μA, VCC = 5 V | 4.4 | 4.4 | V | |
| VOL Low Level Output Voltage | IOL = 20 μA, VCC = 5 V | 0.1 | 0.1 | V | |
| tPLH, tPHL Propagation Delay | CL = 50 pF, VCC = 5 V | 33 | 41 | 50 | ns |
| fMAX Maximum Clock Frequency | VCC = 5 V | 25 | 30 | MHz | |
| Temperature Range | -55 | 125 | ℃ |
Key Features
- Buffered inputs
- Common three-state output enable control
- Three-state outputs
- Bus line driving capability
- Typical propagation delay (clock to Q) = 15 ns at VCC = 5 V, CL = 15 pF, TA = 25℃
- Fanout (over temperature range): Standard outputs: 10 LSTTL loads, Bus driver outputs: 15 LSTTL loads
- Wide operating temperature range: –55℃ to 125℃
- 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: NIL = 30%, NIH = 30% of VCC at VCC = 5 V
- HCT types: 4.5-V to 5.5-V Operation, Direct LSTTL input logic compatibility
Applications
- Digital storage and data transfer in microprocessor and microcontroller systems
- Buffering and storage in digital signal processing applications
- Bus-oriented systems where data needs to be stored and retrieved efficiently
- High-speed digital circuits requiring low power consumption and high noise immunity
- Automotive and industrial control systems where wide temperature range operation is necessary
Q & A
- What is the typical propagation delay of the CD74HC374M96?
The typical propagation delay (clock to Q) is 15 ns at VCC = 5 V, CL = 15 pF, and TA = 25℃.
- What is the fanout capability of the CD74HC374M96?
The device can drive up to 10 LSTTL loads for standard outputs and up to 15 LSTTL loads for bus driver outputs.
- What is the operating temperature range of the CD74HC374M96?
The operating temperature range is –55℃ to 125℃.
- What are the power supply requirements for the CD74HC374M96?
The device operates from a 2-V to 6-V power supply for HC types and 4.5-V to 5.5-V for HCT types.
- How does the output enable (OE) control work?
The output enable (OE) control is independent of the register operation and puts the outputs in a high-impedance state when OE is HIGH.
- What is the maximum clock frequency for the CD74HC374M96?
The maximum clock frequency is 30 MHz at VCC = 5 V.
- What are the input voltage levels for the CD74HC374M96?
The high-level input voltage (VIH) is 3.15 V to 4.2 V, and the low-level input voltage (VIL) is 1.35 V to 1.8 V at VCC = 5 V.
- How does the device handle noise immunity?
The device has high noise immunity with NIL = 30% and NIH = 30% of VCC at VCC = 5 V.
- What are the typical output voltage levels for the CD74HC374M96?
The high-level output voltage (VOH) is 4.4 V, and the low-level output voltage (VOL) is 0.1 V at VCC = 5 V.
- What are some common applications of the CD74HC374M96?
Common applications include digital storage and data transfer in microprocessor and microcontroller systems, buffering and storage in digital signal processing, and high-speed digital circuits.
