74F676

INTEGRATED CIRCUITS 74F676 16-bit serial/parallel-in, serial-out shift register (3-State) Product specification IC15 Data Handbook 1989 Apr 18 Philips Semiconductors Philips Semiconductors Product specification 16-bit serial/parallel-in, serial-out shift register (3-State) 74F676 FEATURES 16-bit parallel-to-serial conversion 16-bit serial-in, serial-out Chip select control Power supply current 48mA typical Shift frequency 110MHz tyical Available in 300mil-wide 24-pin Slim DIP package DESCRIPTION The 74F676 contains 16 flip-flops with provision for synchronous parallel or serial entry and serial output. When the mode (M) input is High, information present on the parallel data (D0–D15) inputs is entered on the falling edge of the clock pulse (CP) input signal. When M is Low, data is shifted out of the most significant bit position while information present on the serial (SI) input shifts into the least significant bit position. A High signal on the chip select (CS) input prevents both parallel and serial operations. The 16 bit shift register operates in one of three modes, as indicated in the shift register Function Table. Hold: A High signal on the Chip Select (CS) input prevents clocking and data is stored in the 16 registers. Serial load: Data present on the SI pin shifts into the register on the falling edge of CP. Data enters the Q0 position and shifts toward Q15 on successive clocks finally appearing on the SO pin. Parallel load: Data present on D0–D15...