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Part Number: DM74S299
Description: This Schottky TTL eight-bit universal register features multiplexed inputs/outputs to achieve full eig...
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DM74S299
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General Description
DM74S299 General Description
This Schottky TTL eight-bit universal register features multiplexed inputs/outputs to achieve full eight bit data handling in a single 20-pin package. Two function-select inputs and two output-control inputs can be used to choose the modes of operation listed in the function table.
Synchronous parallel loading is accomplished by taking both function-select lines, S0 and S1, HIGH. This places the 3-STATE outputs in a high-impedance state, which permits data that is applied on the input/output lines to be clocked into the register. Reading out of the register can be accomplished while the outputs are enabled in any mode. A direct overriding input is provided to clear the register whether the outputs are ENABLED or OFF
DM74S299 Maximum Ratings
Supply Voltage . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5.5V
Operating Free Air Temperature Range . . . . . . . . . . . . . . . . . . . 0°C to +70°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . −65°C to +150°C
Note 2: The "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The "Recommended Operating Conditions" table will define the conditions for actual device operation.
DM74S299 Features
· Multiplexed inputs/outputs provide improved bit density
· Four modes of operation: Hold (Store) Shift Left
Shift Right Load Data
· 3-STATE outputs drive bus lines directly
· Can be cascaded for N-bit word lengths
· Operates with outputs enabled or at high Z
· Guaranteed shift (clock) frequency 50 MHz
· Typical power dissipation 700 mW
· Four modes of operation: Hold (Store) Shift Left
Shift Right Load Data
· 3-STATE outputs drive bus lines directly
· Can be cascaded for N-bit word lengths
· Operates with outputs enabled or at high Z
· Guaranteed shift (clock) frequency 50 MHz
· Typical power dissipation 700 mW
DM74S299
PDF/DataSheet Download
- Datasheet: DM74S299
- File Size: 61341 KB
- Manufacturer: Fairchild
- Click here to Download
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