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CD74FCT244AT

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 V at VCC = 5 VSCR Latch-Up-Resistant BiCMOS Process and Circuit DesignPackage Options Includ...

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SeekIC No. : 004311924 Detail

CD74FCT244AT: Features: BiCMOS Technology With Low Quiescent PowerBuffered InputsNoninverted OutputsInput/Output Isolation From VCCControlled Output Edge Rates64-mA Output Sink CurrentOutput Voltage Swing Limited...

CD74FCT244AT Data Sheet

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Part Number:
CD74FCT244AT
Supply Ability:
5000

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  • 1~5000
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  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

 BiCMOS Technology With Low Quiescent Power
 Buffered Inputs
 Noninverted Outputs
 Input/Output Isolation From VCC
 Controlled Output Edge Rates
 64-mA Output Sink Current
 Output Voltage Swing Limited to 3.7 V at VCC = 5 V
 SCR Latch-Up-Resistant BiCMOS Process and Circuit Design
 Package Options Include Plastic Small-Outline (M) and Shrink Small-Outline (SM) Packages and Standard Plastic (E) DIP 


Pinout

Connection Diagram


Specifications

DC supply voltage range, VCC  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5 V to 6 V
DC input clamp current, IIK (VI < 0.5 V)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 mA
DC output clamp current, IOK (VO < 0.5 V)  . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . .50 mA
DC output sink current per output pin, IOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .70 mA
DC output source current per output pin, IOH  . . . . . . . . . . . . . .. . . . . . . . . . . . . .. . .30 mA
Continuous current through VCC, ICC  . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140 mA
Continuous current through GND  . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . .. .528 mA
Package thermal impedance, JA (see Note 1)  E package)  . .. . . . . . . . . . . . . . . . .. .69°C/W
                                                                          M package) . . . . . . . . . . . . . . . . . . . . 58°C/W
                                                                          SM package)  . . .  . . . . . . . . . . . .  . . .70°C/W
Storage temperature range, Tstg  . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . 65°C to 150°C


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 VCC bounce and ground bounce and their effects during simultaneous output switching. The output configuration also enhances switching speed and is capable of sinking 64 mA.

CD74FCT244AT 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 CD74FCT244AT high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

The CD74FCT244 and CD74FCT244AT devices are characterized for operation from 0°C to 70°C.




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