SN54LS671

The SN54LS671 is a type of 4-bit universal shift register/latches with 3-state outputs. The user has the option of cho osing the shift or storage register via the register/shift select input R/S. It has a direct-overriding shift register clear.

Features of SN54LS671 are:(1)4-bit universal shift register/latches; (2)multiplexed outputs for shift register or latche d data; (3)choice of direct SR clear; (4)3-state outputs drive bus lines directly; (5)expandable to any word lenght.

The absolute maximum ratings and electrical characteristics of the SN54LS671 can be summarized as: (1)supply volt age: 7V; (2)input voltage: 7V;(3)operating free air temperature range:-55 to 125;(4)storage temperature rang:-65 to 150; (5)off-state output voltage: 5.5V. Electrical characteristics: (1)high-level input voltage: 2V min; (2)low-level input voltage: 0.7V max; (3)input clamp voltage(VCC=min, I1=-18mA): -1.5V max; (4)low level input current(VC C=max, V1=0.4V):-0.4mA max; (5)short-circuit output current(VCC=max, Vo=0V):-30mA min and-130mA max; (6)su pply current(VCC=max, all outputs open): 35mA typ and 70mA max, etc.