Overview
The CD74HCT259M96 is an 8-bit addressable latch produced by Texas Instruments. This component is part of the CDx4HC(T)259 series, designed for general-purpose storage applications in digital systems. It features buffered inputs and outputs, four operating modes, and a wide operating temperature range from -55°C to 125°C. The device is available in various packages, including SOIC (Small Outline Integrated Circuit) and PDIP (Plastic Dual In-Line Package), making it versatile for different design needs.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC Supply Voltage | - | -0.5 | - | 7 | V |
| Temperature Range | - | -55 | - | 125 | °C |
| Propagation Delay (D to Q) | VCC = 4.5V, CL = 15pF, TA = 25°C | 16 | 39 | 49 | ns |
| Propagation Delay (G to Q) | VCC = 4.5V, CL = 15pF, TA = 25°C | 16 | 38 | 48 | ns |
| Propagation Delay (S to Q) | VCC = 4.5V, CL = 15pF, TA = 25°C | 17 | 41 | 51 | ns |
| Propagation Delay (CLR to Q) | VCC = 4.5V, CL = 15pF, TA = 25°C | 16 | 39 | 49 | ns |
| Output Transition Time | VCC = 4.5V, CL = 15pF, TA = 25°C | 15 | 19 | 22 | ns |
| Input Capacitance | - | - | - | 10 | pF |
| Power Dissipation Capacitance | - | - | - | 22 | pF |
Key Features
- Buffered inputs and outputs
- Four operating modes: addressable latch, memory, 8-line demultiplexer, and reset
- Typical propagation delay of 15ns at VCC = 5V, CL = 15pF, TA = 25°C
- Wide operating temperature range: -55°C to 125°C
- Balanced propagation delay and transition times
- Significant power reduction compared to LSTTL logic ICs
- HCT types: 4.5V to 5.5V operation, direct LSTTL input logic compatibility
- HC types: 2V to 6V operation, high noise immunity
Applications
- General-purpose storage in digital systems
- Working registers
- Serial-holding registers
- Active-high decoders or demultiplexers
Q & A
- What is the CD74HCT259M96 used for?
The CD74HCT259M96 is used for general-purpose storage applications in digital systems, including working registers, serial-holding registers, and active-high decoders or demultiplexers.
- What are the operating modes of the CD74HCT259M96?
The device operates in four modes: addressable latch, memory, 8-line demultiplexer, and reset.
- What is the typical propagation delay of the CD74HCT259M96?
The typical propagation delay is 15ns at VCC = 5V, CL = 15pF, and TA = 25°C.
- What is the operating temperature range of the CD74HCT259M96?
The operating temperature range is from -55°C to 125°C.
- What are the power supply requirements for the CD74HCT259M96?
The HCT types operate between 4.5V and 5.5V, while the HC types operate between 2V and 6V.
- Does the CD74HCT259M96 have LSTTL input compatibility?
Yes, the HCT types have direct LSTTL input logic compatibility.
- What is the input capacitance of the CD74HCT259M96?
The input capacitance is 10 pF.
- What is the power dissipation capacitance of the CD74HCT259M96?
The power dissipation capacitance is 22 pF.
- What are the package options available for the CD74HCT259M96?
The device is available in SOIC and PDIP packages.
- Is the CD74HCT259M96 suitable for high-temperature applications?
Yes, it operates within a wide temperature range from -55°C to 125°C.
