SN54HC273; SN74HC273

OCTAL D-TYPE FLIP-FLOPS WITH CLEAR

• Wide Operating Voltage Range of 2 V to 6 V
• Outputs Can Drive Up To 10 LSTTL Loads
• Low Power Consumption, 80-µA Max I_CC
• Typical t_pd = 12 ns
• ±4-mA Output Drive at 5 V
• Low Input Current of 1 µA Max
• Contain Eight Flip-Flops With Single-Rail Outputs
• Direct Clear Input
• Individual Data Input to Each Flip-Flop
• Applications Include:
  • − Buffer/Storage Registers
  • − Shift Registers
  • − Pattern Generators

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†

Supply voltage range, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V

Input clamp current, I_IK (V_I < 0 or V_I > V_CC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA

Output clamp current, I_OK (V_O < 0 or V_O > V_CC) (see Note 1) . . . . . . . . . . . . . . . . . . . . ±20 mA

Continuous output current, I_O (V_O = 0 to V_CC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 mA

Continuous current through V_CC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA

Package thermal impedance, θ_JA (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . 70°C/W

DW package . . . . . . . . . . . . . . . . . . . . . . . 58°C/W

N package . . . . . . . . . . . . . . . . . . . . . . . . . 69°C/W

NS package . . . . . . . . . . . . . . . . . . . . . . . . 60°C/W

PW package . . . . . . . . . . . . . . . . . . . . . . . . 83°C/W

Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES:

1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

2. The package thermal impedance is calculated in accordance with JESD 51-7.

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