74LCX540FT(AE) Toshiba

74LCX540FT CMOS Digital Integrated Circuits Silicon Monolithic 74LCX540FT74LCX540FT74LCX540FT74LCX540FT 1. 1. 1. 1. Functional DescriptionFunctional DescriptionFunctional DescriptionFunctional Description Low-Voltage Octal Bus Buffer (Inverted) with 5-V Tolerant Inputs and Outputs 2. 2. GeneralGeneral 2. 2. GeneralGeneral The 74LCX540FT is a high-performance CMOS octal bus buffer. Designed for use in 3.3-V systems, it achieves high-speed operation while maintaining the CMOS low power dissipation. The device is designed for low-voltage (3.3 V) VCC applications, but it could be used to interface to 5 V supply environment for both inputs and outputs. The 74LCX540FT is an inverting 3-state buffer having two active-low output enables. When either OE1 or OE2 are high, the terminal outputs are in the high-impedance state. This device is designed to be used with 3-state memory address drivers, etc. All inputs are equipped with protection circuits against static discharge. 3. 3. 3. 3. FeaturesFeaturesFeaturesFeatures (1) Low-voltage operation: V = 1.65 to 3.6 V CC (2) High-speed operation: t = 6.5 ns (max) (V = 3.0 to 3.6 V) pd CC (3) Output current: I /I = 24 mA (min) (V = 3.0 to 3.6 V) OH OL CC (4) Power-down protection provided on all inputs and outputs (5) Pin and function compatible with the 74 series (74LVC/ALVC/ etc.) 540 type 4. 4. PackagingPackaging 4. 4. PackagingPackaging TSSOP20B Start of commercial production 2013-10 2014-06-24 1 Rev.2.074LCX540FT 5. 5. 5. 5. Pin AssignmentPin AssignmentPin AssignmentPin Assignment 6. 6. 6. 6. MarkingMarkingMarkingMarking 7. 7. IEC Logic SymbolIEC Logic Symbol 7. 7. IEC Logic SymbolIEC Logic Symbol 2014-06-24 2 Rev.2.0