CD74FCT244 Series
8-ch, 4.75-V to 5.25-V buffers with TTL-compatible CMOS inputs and 3-state outputs
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
8-ch, 4.75-V to 5.25-V buffers with TTL-compatible CMOS inputs and 3-state outputs
| Part | Operating Temperature [Max] | Operating Temperature [Min] | Package / Case | Package / Case | Package / Case | Output Type | Logic Type | Number of Elements [custom] | Voltage - Supply [Min] | Voltage - Supply [Max] | Supplier Device Package | Number of Bits per Element | Current - Output High, Low | Mounting Type | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments CD74FCT244E | 70 °C | 0 °C | 20-DIP | 0.3 in | 7.62 mm | 3-State | Buffer, Non-Inverting | 2 | 4.75 V | 5.25 V | 20-PDIP | 4 | 15 mA, 64 mA | Through Hole | |
Texas Instruments CD74FCT244M96 | 70 °C | 0 °C | 20-SOIC | 3-State | Buffer, Non-Inverting | 2 | 4.75 V | 5.25 V | 20-SOIC | 4 | 15 mA, 64 mA | Surface Mount | 0.295 in, 7.5 mm | ||
Texas Instruments CD74FCT244M | 70 °C | 0 °C | 20-SOIC | 3-State | Buffer, Non-Inverting | 2 | 4.75 V | 5.25 V | 20-SOIC | 4 | 15 mA, 64 mA | Surface Mount | 0.295 in, 7.5 mm |
Key Features
• BiCMOS Technology With Low Quiescent PowerBuffered InputsNoninverted OutputsInput/Output Isolation From VCCControlled Output Edge Rates64-mA Output Sink CurrentOutput Voltage Swing Limited to 3.7 VSCR Latch-Up-Resistant BiCMOS Process and Circuit DesignBiCMOS Technology With Low Quiescent PowerBuffered InputsNoninverted OutputsInput/Output Isolation From VCCControlled Output Edge Rates64-mA Output Sink CurrentOutput Voltage Swing Limited to 3.7 VSCR Latch-Up-Resistant BiCMOS Process and Circuit Design
Description
AI
The CD74FCT244 and CD74FCT244AT are octal buffer/line drivers with 3-state outputs using a small-geometry BiCMOS technology. The output stages are a combination of bipolar and CMOS transistors that limit the output high level to two diode drops below VCC. This resultant lowering of output swing (0 V to 3.7 V) reduces the power-bus ringing [a source of electromagnetic interference (EMI)] and minimizes VCCbounce and ground bounce and their effects during simultaneous output switching. The output configuration also enhances switching speed and is capable of sinking 64 mA.
These devices are organized as two 4-bit buffers/line drivers with separate active-low output-enable (OE\) inputs. When OE\ is low, the device passes data from the A inputs to the Y outputs. When OE\ is high, the outputs are in the high-impedance state.
To ensure the high-impedance state during power up or power down, OE\ should be tied to VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
The CD74FCT244 and CD74FCT244AT are octal buffer/line drivers with 3-state outputs using a small-geometry BiCMOS technology. The output stages are a combination of bipolar and CMOS transistors that limit the output high level to two diode drops below VCC. This resultant lowering of output swing (0 V to 3.7 V) reduces the power-bus ringing [a source of electromagnetic interference (EMI)] and minimizes VCCbounce and ground bounce and their effects during simultaneous output switching. The output configuration also enhances switching speed and is capable of sinking 64 mA.
These devices are organized as two 4-bit buffers/line drivers with separate active-low output-enable (OE\) inputs. When OE\ is low, the device passes data from the A inputs to the Y outputs. When OE\ is high, the outputs are in the high-impedance state.
To ensure the high-impedance state during power up or power down, OE\ should be tied to VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.