TC74LCX540FK(EL,K) Toshiba

TC74LCX540F/FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74LCX540F, TC74LCX540FK Low-Voltage Octal Bus Buffer (inverted) with 5-V Tolerant Inputs and Outputs The TC74LCX540 is a high-performance CMOS octal bus buffer. TC74LCX540F 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) V applications, but it CC could be used to interface to 5 V supply environment for both inputs and outputs. The TC74LCX540 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. TC74LCX540FK Features Low-voltage operation: V 1.65 to 3.6 V CC High-speed operation: tpd 6.5 ns (max) (VCC 3.0 to 3.6 V) Output current: I /I 24 mA (min) (V 3.0 V) OH OL CC Available in JEITA SOP, VSSOP (US) Power-down protection provided on all inputs and outputs Weight: Pin and function compatible with the 74 series SOP20-P-300-1.27A : 0.22 g ( typ.) (74AC/VHC/HC/F/ALS/LS etc.) 540 type VSSOP20-P-0030-0.50 : 0.03 g ( typ.) Note: The Electrical Characteristics of VCC = 1.8 0.15 V is only applicable for products which manufactured from January 2009 onward. Start of commercial production 1995-02 2018-2021 2021-03-26 1 Toshiba Electronic Devices & Storage Corporation TC74LCX540F/FK Pin Assignment (top view) IEC Logic Symbol (1) & 1 20 V CC EN (19) A1 2 19 A2 3 18 (2) (18) A1 (3) (17) A2 A3 4 17 (4) (16) A3 (5) (15) A4 5 16 A4 (6) (14) A5 A5 6 15 (7) (13) A6 (8) (12) A7 A6 7 14 (9) (11) A8 A7 8 13 A8 9 12 GND 10 11 Truth Table Inputs Outputs OE1 OE2 An H X X Z X H X Z L L H L L L L H X: Dont care Z: High impedance 2018-2021 2021-03-26 2 Toshiba Electronic Devices & Storage Corporation