Details, datasheet, quote on part number: MC74HC244AF
PartMC74HC244AF
CategoryLogic => Buffers/Drivers => Buffers
TitleBuffers
DescriptionOctal Buffer , Package: Tssop, Pins=20
CompanyON Semiconductor
DatasheetDownload MC74HC244AF datasheet
Cross ref.Similar parts: 74VHC244FT, SN74HC244NSR, SN74HC244QPWRQ1
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Features, Applications
MC74HC244A Octal 3-State Noninverting Buffer/Line Driver/ Line Receiver

The MC74HC244A is identical in pinout to the LS244. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. This octal noninverting buffer/line driver/line receiver is designed to be used with 3­state memory address drivers, clock drivers, and other bus­oriented systems. The device has noninverting outputs and two active­low output enables. The HC244A is similar in function to the HC240A.

Output Drive Capability: 15 LSTTL Loads Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 6 V Low Input Current: 1 µA High Noise Immunity Characteristic of CMOS Devices In Compliance with the Requirements Defined by JEDEC Standard No. 7A Chip Complexity: 136 FETs or 34 Equivalent Gates

= Assembly Location = Wafer Lot = Year = Work Week

Device MC74HC244ADTR2 1 Package PDIP­20 SOIC­WIDE TSSOP­20 Shipping 1440 / Box 38 / Rail 1000 / Reel 75 / Rail 2500 / Reel

Symbol VCC Vin Parameter Value Unit V DC Supply Voltage (Referenced to GND) DC Input Voltage (Referenced to GND) 0.5 to VCC to VCC Vout Iin DC Output Voltage (Referenced to GND) DC Input Current, per Pin mA Iout DC Output Current, per Pin ICC PD DC Supply Current, VCC and GND Pins Power Dissipation in Still Air, Plastic DIP SOIC Package TSSOP Package mW Tstg TL Storage Temperature 150 260

This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high­impedance circuit. For proper operation, Vin and Vout should be constrained to the range GND (Vin or Vout) VCC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC). Unused outputs must be left open.

Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP, SOIC, SSOP or TSSOP Package)

*Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions. Derating Plastic DIP: ­ 10 mW/_C from to 125_C SOIC Package: ­ 7 mW/_C from to 125_C TSSOP Package: ­ 6.1 mW/_C from to 125_C For high frequency or heavy load considerations, see Chapter 2 of the ON Semiconductor High­Speed CMOS Data Book (DL129/D).

Symbol VCC Parameter Min 2.0 0 Max 6.0 Unit V DC Supply Voltage (Referenced to GND) Vin, Vout TA DC Input Voltage, Output Voltage (Referenced to GND) Operating Temperature, All Package Types Input Rise and Fall Time (Figure 1) VCC


Guaranteed Limit 85_C Symbol Iin Parameter Test Conditions VCC 25_C 125_C Unit µA Maximum Input Leakage Current Maximum Three­State Leakage Current Vin = VCC or GND IOZ Output in High­Impedance State Vin = VIL or VIH Vout = VCC or GND Vin = VCC or GND Iout 0 µA ICC Maximum Quiescent Supply Current (per Package) µA NOTE: Information on typical parametric values and high frequency or heavy load considerations can be found in Chapter 2 of the ON Semiconductor High­Speed CMOS Data Book (DL129/D).

Maximum Propagation Delay, Output Enable or YB (Figures 2 and 4)
Maximum Propagation Delay, Output Enable or YB (Figures 2 and 4)
Maximum Output Transition Time, Any Output (Figures 1 and 3)
Maximum Three­State Output Capacitance (Output in High­Impedance State)

NOTE: For propagation delays with loads other than 50 pF, and information on typical parametric values, see Chapter 2 of the ON Semiconductor High­Speed CMOS Data Book (DL129/D). Typical @ 25°C, VCC 5.0 V CPD Power Dissipation Capacitance (Per Buffer)* 34 pF

* Used to determine the no­load dynamic power consumption: CC V CC. For load considerations, see Chapter 2 of the ON Semiconductor High­Speed CMOS Data Book (DL129/D).


 

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