CD74HC299

Data sheet acquired from Harris Semiconductor SCHS178C January 1998 - Revised May 2003 CD54HC299, CD74HC299, CD54HCT299, CD74HCT299 High-Speed CMOS Logic 8-Bit Universal Shift Register; Three-State [ /Title (CD74 HC299 , CD74 HCT29 9) /Subject (High Speed CMOS Logic 8-Bit Universal Shift Features Buffered Inputs Four Operating Modes: Shift Left, Shift Right, Load and Store Can be Cascaded for N-Bit Word Lengths I/O0 - I/O7 Bus Drive Capability and Three-State for Bus Oriented Applications Typical fMAX = 50MHz at VCC = 5V, CL = 15pF, TA = 25oC Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads Wide Operating Temperature Range . . . -55oC to 125oC Balanced Propagation Delay and Transition Times Significant Power Reduction Compared to LSTTL Logic ICs HC Types - 2V to 6V Operation - High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V HCT Types - 4.5V to 5.5V Operation - Direct LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH = 2V (Min) - CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH Pinout CD54HC299, CD54HCT299 (CERDIP) CD74HC299, CD74HCT299 (PDIP, SOIC) TOP VIEW S0 1 OE1 2 OE2 3 I/O6 4 I/O4 5 I/O2 6 I/O0 7 Q0 8 MR 9 GND 10 20 VCC 19 S1 18 DS7 17 Q7 16 I/O7 15 I/O5 14 I/O3 13 I/O1 12 CP 11 DS0 Description The ’HC259 and ’HCT299 are 8-bit shift/storage registers with three-state bus interface capability. The register has four synchr...