CD74FCT244AT Series

8-ch, 4.75-V to 5.25-V buffers with TTL-compatible CMOS inputs and 3-state outputs

Catalog

8-ch, 4.75-V to 5.25-V buffers with TTL-compatible CMOS inputs and 3-state outputs

Part	Output Type	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Number of Bits per Element	Logic Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Package / Case	Package / Case [y]	Package / Case [y]	Mounting Type	Number of Elements	Package / Case	Package / Case	Package / Case [custom]	Package / Case [custom]
Texas Instruments CD74FCT244ATM96	3-State	20-SOIC	70 °C	0 °C	64 mA	15 mA	4	Buffer Non-Inverting	4.75 V	5.25 V	20-SOIC	0.295 in	7.5 mm	Surface Mount	2
Texas Instruments CD74FCT244ATE	3-State	20-PDIP	70 °C	0 °C	64 mA	15 mA	4	Buffer Non-Inverting	4.75 V	5.25 V	20-DIP			Through Hole	2	7.62 mm	0.3 in
Texas Instruments CY74FCT244ATQCT	3-State	20-SSOP	85 °C	-40 °C	64 mA	32 mA	4	Buffer Non-Inverting	4.75 V	5.25 V	20-SSOP			Surface Mount	2			0.154 in	3.9 mm
Texas Instruments CY74FCT244TSOCT	3-State	20-SOIC	85 °C	-40 °C	64 mA	32 mA	4	Buffer Non-Inverting	4.75 V	5.25 V	20-SOIC	0.295 in	7.5 mm	Surface Mount	2
Texas Instruments CY74FCT244DTQCT	3-State	20-SSOP	70 °C	0 °C	64 mA	32 mA	4	Buffer Non-Inverting	4.75 V	5.25 V	20-SSOP			Surface Mount	2			0.154 in	3.9 mm
Texas Instruments CY74FCT244DTQC
Texas Instruments CD74FCT244M96	3-State	20-SOIC	70 °C	0 °C	64 mA	15 mA	4	Buffer Non-Inverting	4.75 V	5.25 V	20-SOIC	0.295 in	7.5 mm	Surface Mount	2
Texas Instruments CY74FCT244CTSOCT	3-State	20-SOIC	85 °C	-40 °C	64 mA	32 mA	4	Buffer Non-Inverting	4.75 V	5.25 V	20-SOIC	0.295 in	7.5 mm	Surface Mount	2
Texas Instruments CD74FCT244SM96E4	3-State	20-SSOP	70 °C	0 °C	64 mA	15 mA	4	Buffer Non-Inverting	4.75 V	5.25 V	20-SSOP			Surface Mount	2
Texas Instruments CY74FCT244DTSOCT	3-State	20-SOIC	70 °C	0 °C	64 mA	32 mA	4	Buffer Non-Inverting	4.75 V	5.25 V	20-SOIC	0.295 in	7.5 mm	Surface Mount	2

Catalog

8-ch, 4.75-V to 5.25-V buffers with TTL-compatible CMOS inputs and 3-state outputs

Key Features

• Function, Pinout, and Drive Compatible With FCT and F LogicReduced VOH(Typically = 3.3 V) Versions of Equivalent FCT FunctionsEdge-Rate Control Circuitry for Significantly Improved Noise CharacteristicsIoffSupports Partial-Power-Down Mode OperationESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101)Matched Rise and Fall TimesFully Compatible With TTL Input and Output Logic LevelsCY54FCT244T48-mA Output Sink Current12-mA Output Source CurrentCY74FCT244T64-mA Output Sink Current32-mA Output Source Current3-State OutputsFunction, Pinout, and Drive Compatible With FCT and F LogicReduced VOH(Typically = 3.3 V) Versions of Equivalent FCT FunctionsEdge-Rate Control Circuitry for Significantly Improved Noise CharacteristicsIoffSupports Partial-Power-Down Mode OperationESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101)Matched Rise and Fall TimesFully Compatible With TTL Input and Output Logic LevelsCY54FCT244T48-mA Output Sink Current12-mA Output Source CurrentCY74FCT244T64-mA Output Sink Current32-mA Output Source Current3-State Outputs

Description

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.