SN54LS194A

SN54/74LS194A 4-BIT BIDIRECTIONAL UNIVERSAL SHIFT REGISTER The SN54 / 74LS194A is a High Speed 4-Bit Bidirectional Universal Shift Register. As a high speed multifunctional sequential building block, it is useful in a wide variety of applications. It may be used in serial-serial, shift left, shift right, serial-parallel, parallel-serial, and parallel-parallel data register transfers. The LS194A is similar in operation to the LS195A Universal Shift Register, with added features of shift left without external connections and hold (do nothing) modes of operation. It utilizes the Schottky diode clamped process to achieve high speeds and is fully compatible with all Motorola TTL families. 4-BIT BIDIRECTIONAL UNIVERSAL SHIFT REGISTER LOW POWER SCHOTTKY Typical Shift Frequency of 36 MHz Asynchronous Master Reset Hold (Do Nothing) Mode Fully Synchronous Serial or Parallel Data Transfers Input Clamp Diodes Limit High Speed Termination Effects J SUFFIX CERAMIC CASE 620-09 16 1 CONNECTION DIAGRAM DIP (TOP VIEW) VCC 16 Q0 15 Q1 14 Q2 13 Q3 12 CP 11 S1 10 S0 9 16 1 N SUFFIX PLASTIC CASE 648-08 16 1 D SUFFIX SOIC CASE 751B-03 1 MR 2 DSR 3 P0 4 P1 5 P2 6 P3 7 DSL 8 GND ORDERING INFORMATION SN54LSXXXJ SN74LSXXXN SN74LSXXXD Ceramic Plastic SOIC PIN NAMES LOADING (Note a) HIGH LOW 0.25 U.L. 0.25 U.L. 0.25 U.L. 0.25 U.L. 0.25 U.L. 0.25 U.L. 5 (2.5) U.L. S0, S1 P0 – P3 DSR DSL CP MR Q0 – Q3 Mode Control Inputs Parallel Data Inputs Serial (Shift Right) Data Input Se...