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SN74LS90 Datasheet 4-BIT BINARY COUNTER

Manufacturer: Motorola Semiconductor (now NXP Semiconductors)

Overview: DECADE COUNTER; DIVIDE-BY-TWELVE COUNTER; 4-BIT BINARY COUNTER The SN54 / 74LS90, SN54 / 74LS92 and SN54 / 74LS93 are high-speed 4-bit ripple type counters partitioned into two sections.

Key Features

  • 2 48 34 50 46 70 46 70 ns 10 16 14 21 10 16 14 21 10 16 14 21 ns tPLH tPHL tPLH tPHL tPLH tPHL tPHL CP1 Input to Q2 Output CP1 Input to Q3 Output MS Input to Q0 and Q3 Outputs MS Input to Q1 a.