Overview
The CD74HCT244M96 is a high-speed CMOS logic octal buffer/line driver produced by Texas Instruments. This component belongs to the 74HCT series, which is designed for high-speed and low-power applications. The CD74HCT244 is a non-inverting three-state buffer with two active-low output enables, making it versatile for various digital logic circuits.
It features a wide operating temperature range from –55°C to 125°C, making it suitable for a broad range of environments. The device is available in several package types, including SOIC, PDIP, and CDIP, to accommodate different design requirements.
Key Specifications
| Parameter | Condition | Unit | Min | Max | |
|---|---|---|---|---|---|
| VCC (Supply Voltage) | V | 4.5 | 5.5 | ||
| VIH (High Level Input Voltage) | VCC = 5 V | V | 2 | ||
| VIL (Low Level Input Voltage) | VCC = 5 V | V | 0.8 | ||
| VOH (High Level Output Voltage) | IOH = –20 μA, VCC = 5 V | V | 4.4 | ||
| tPLH, tPHL (Propagation Delay) | CL = 15 pF, VCC = 5 V | ns | 8 | 22 | |
| tTHL, tTLH (Output Enable and Disable Time) | CL = 15 pF, VCC = 5 V | ns | 30 | 45 | |
| tTLH, tTHL (Output Transition Time) | CL = 15 pF, VCC = 5 V | ns | 12 | 18 | |
| CI (Input Capacitance) | pF | 10 | |||
| CO (Three-state Output Capacitance) | pF | 20 | |||
| CPD (Power Dissipation Capacitance) | pF | 40 |
Key Features
- Non-inverting three-state buffers with two active-low output enables.
- High-speed CMOS logic with typical propagation delay of 8 ns at VCC = 5 V and CL = 15 pF.
- Three-state outputs for bus-oriented applications.
- Buffered inputs and high-current bus driver outputs.
- Fanout capability: standard outputs can drive up to 10 LSTTL loads, and bus driver outputs can drive up to 15 LSTTL loads.
- Wide operating temperature range: –55°C to 125°C.
- Direct LSTTL input logic compatibility and CMOS input compatibility.
- Significant power reduction compared to LSTTL logic ICs.
- Available in SOIC, PDIP, and CDIP packages.
Applications
- Bus-oriented circuits where high-speed and low power consumption are critical.
- Digital logic circuits requiring non-inverting buffers with three-state outputs.
- Microprocessor and microcontroller systems for data transmission and reception.
- Peripheral devices and interface circuits.
- Industrial control systems and automation.
- Aerospace and automotive applications due to its wide operating temperature range.
Q & A
- What is the CD74HCT244M96 used for?
The CD74HCT244M96 is used as a high-speed CMOS logic octal buffer/line driver, particularly in bus-oriented circuits and digital logic applications.
- What are the key features of the CD74HCT244M96?
Key features include non-inverting three-state buffers, high-speed operation, three-state outputs, buffered inputs, and high-current bus driver outputs.
- What is the operating temperature range of the CD74HCT244M96?
The operating temperature range is from –55°C to 125°C.
- What are the typical propagation delays for the CD74HCT244M96?
The typical propagation delay is 8 ns at VCC = 5 V and CL = 15 pF.
- What are the input and output voltage levels for the CD74HCT244M96?
The high-level input voltage (VIH) is 2 V, and the low-level input voltage (VIL) is 0.8 V. The high-level output voltage (VOH) is 4.4 V at IOH = –20 μA.
- What is the fanout capability of the CD74HCT244M96?
The standard outputs can drive up to 10 LSTTL loads, and the bus driver outputs can drive up to 15 LSTTL loads.
- Is the CD74HCT244M96 compatible with LSTTL logic?
Yes, it has direct LSTTL input logic compatibility.
- What are the available package types for the CD74HCT244M96?
The device is available in SOIC, PDIP, and CDIP packages.
- What is the power dissipation capacitance of the CD74HCT244M96?
The power dissipation capacitance (CPD) is 40 pF.
- Can the CD74HCT244M96 be used in safety-critical applications?
It is advisable to consult the datasheet and Texas Instruments' guidelines for use in safety-critical applications.
