器件名称:
M74HC299TTR
功能描述:
8 BIT PIPO SHIFT REGISTER WITH ASYNCHRONOUS CLEAR
文件大小:
412.76KB 共13页
简 介:
M74HC299 8 BIT PIPO SHIFT REGISTER WITH ASYNCHRONOUS CLEAR s s s s s s s HIGH SPEED : fMAX = 80MHz (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC =4A(MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = V NIL = 28 % VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 6mA (MIN) FOR QA’ TO QH’ |IOH| = IOL = 4mA (MIN) FOR QA TO QH BALANCED PROPAGATION DELAYS: tPLH tPHL WIDE OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 299 DIP SOP TSSOP ORDER CODES PACKAGE DIP SOP TSSOP TUBE M74HC299B1R M74HC299M1R T&R M74HC299RM13TR M74HC299TTR DESCRIPTION The M74HC299 is an high speed CMOS 8 BIT PIPO SHIFT REGISTER (3-STATE) fabricated with silicon gate C2MOS technology. This device has four modes (HOLD, SHIFT LEFT, SHIFT RIGHT and LOAD DATA). Each mode is chosen by two function select inputs (S0, S1). When one or both enable inputs, (G1, G2) are high, the eight input/output terminals are in the high impedance state; however sequential operation or clearing of the register is not affected. Clear function on the M74HC299 is asynchronous to CLOCK. All inputs are equipped with protection circuits against static discharge and transient excess voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS July 2001 1/13 M74HC299 IINPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No 1, 19 2, 3 7, 13, 6, 14, 5, 15, 4, 16 8, 17 9 11 12 18 10 20 SYMBOL S0, S1 G1, G2 A/QA to H/QH QA’ to QH’ CLEAR SR CLOCK SL GND VCC NAME AND FUNCTION Mode Select Inputs 3-Sta……
