器件名称:
M74HC27
功能描述:
TRIPLE 3-INPUT NOR GATE
文件大小:
233.33KB 共9页
简 介:
M54HC27 M74HC27 TRIPLE 3-INPUT NOR GATE . . . . . . . . HIGH SPEED tPD = 7 ns (TYP.) AT VCC = 5 V LOW POWER DISSIPATION ICC = 1 A (MAX.) AT TA = 25 °C HIGH NOISE IMMUNITY VNIH = VNIL = 28 % VCC (MIN.) OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS SYMMETRICAL OUTPUT IMPEDANCE IOH = IOL = 4 mA (MIN.) BALANCED PROPAGATION DELAYS tPLH = tPHL WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V TO 6 V PIN AND FUNCTION COMPATIBLE WITH 54/74LS27 B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) ORDER CODES : M54HC27F1R M74HC27M1R M74HC27B1R M74HC27C1R PIN CONNECTIONS (top view) DESCRIPTION The M54/74HC27 is a high speed CMOS TRIPLE 3-INPUT NOR GATE fabricated in silicon gate 2 C MOS technology. It has the same high speed performance of LSTTL combined with true CMOS low power consumption. The internal circuit is composed of 3 stages including buffered output, which gives high noise immunity and a stable output. All inputs are equipped with protection circuits against static discharge and transient excess voltage. INPUT AND OUTPUT EQUIVALENT CIRCUIT NC = No Internal Connection February 1993 1/9 M54/M74HC27 TRUTH TABLE A L H X X B L X H X C L X X H Y H L L L IEC Logic Symbol PIN DESCRIPTION PIN No 1, 3, 9 2, 4, 10 13, 5, 11 12, 6, 8 7 14 SYMBOL 1A to 3A 1B to 3B 1C to 3C 1Y to 3Y GND VCC NAME AND FUNCTION Data Inputs Data Inputs Data Inputs Data Outputs Ground (0V) Positive Supply Voltage LOGIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol VCC VI VO IIK IOK……