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IN74HC299A

Features: • Outputs Directly Interface to CMOS, NMOS, and TTL• Operating Voltage Range: 2.0 to 6.0 V• Low Input Current: 1.0 µA• High Noise Immunity Characteristic of CMOS DevicesPinoutSpecifications Symbol Parameter Value Unit VCCVINVOUT DC Supply...

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SeekIC No. : 004375052 Detail

IN74HC299A: Features: • Outputs Directly Interface to CMOS, NMOS, and TTL• Operating Voltage Range: 2.0 to 6.0 V• Low Input Current: 1.0 µA• High Noise Immunity Characteristic of C...

IN74HC299A Data Sheet

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Part Number:
IN74HC299A
Supply Ability:
5000

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  • 1~5000
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  • 15 Days
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Product Details

Description



Features:

• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 µA
• High Noise Immunity Characteristic of CMOS Devices


Pinout

Connection Diagram


Specifications

Symbol Parameter
Value
Unit
VCC
VIN
VOUT
 DC Supply Voltage (Referenced to GND)
DC Input Voltage (Referenced to GND)
DC Output Voltage (Referenced to GND)
-0.5 to +7.0
-1.5 to VCC +1.5
-0.5 to VCC +0.5
V
V
V
IIN
IOUT
ICC
 DC Input Current, per Pin
DC Output Current, per Pin
DC Supply Current, VCC and GND Pins
±20
±35
±75
mA
mA
mA
PD
 Power Dissipation in Still Air, Plastic DIP+
SOIC Package+
750
500
mA
Tstg
 Storage Temperature
-65 to +150
TL
 Lead Temperature, 1 mm from Case for 10 Seconds
(Plastic DIP or SOIC Package)
260
*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/ from 65° to 125 SOIC Package: : - 7 mW/ from 65° to 125


Description

The IN74HC299A is identical in pinout to the LS/ALS299. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs.

The IN74HC299A features a multiplexed parallel input/output data port to achieve full 8-bit handling in a 20 pin package. Due to the large output drive capability and the 3-state feature, this device is ideally suited for interface with bus lines in a bus-oriented system.

Two Mode-Select inputs and two Output Enable inputs of the IN74HC299A are used to choose the mode of operation as listed in the Function Table. Synchronous parallel loading is accomplished by taking both Mode- Select lines, S1 and S2, high. This places the outputs in the highimpedance state, which permits data applied to the data port to be clocked into the register. Reading out of the register can be accomplished when the outputs are enabled. The active-low asynchronous Reset overrides all other inputs.




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