TC74LCX540FT(ELK,M Toshiba

TC74LCX540F/FT/FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74LCX540F, TC74LCX540FT, TC74LCX540FK Low-Voltage Octal Bus Buffer (inverted) with 5-V Tolerant Inputs and Outputs The TC74LCX540 is a high-performance CMOS octal bus TC74LCX540F 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) V applications, CC but it 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 TC74LCX540FT discharge. Features Low-voltage operation: V = 1.65 to 3.6 V CC High-speed operation: t = 6.5 ns (max) (V = 3.0 to 3.6 V) pd CC Output current: I /I = 24 mA (min) (V = 3.0 V) OH OL CC Latch-up performance: >500 mA Available in JEITA SOP, TSSOP and VSSOP (US) TC74LCX540FK Power-down protection provided on all inputs and outputs Pin and function compatible with the 74 series (74AC/VHC/HC/F/ALS/LS etc.) 540 type W Weight: SOP20-P-300-1.27A : 0.22 g (typ.) TSSOP20-P-0044-0.65A : 0.08 g (typ.) VSSOP20-P-0030-0.50 : 0.03 g (typ.) Note: The Electrical Characteristics of V =1.80.15V is only applicable for products which manufactured CC from January 2009 onward. Start of commercial production 1995-02 1 2014-03-01 TC74LCX540F/FT/FK Pin Assignment (top view) IEC Logic Symbol (1) & OE1 1 20 V OE1 CC EN (19) OE2 A1 2 19 OE2 A2 3 18 Y1 (2) (18) A1 Y1 (3) (17) A2 Y2 A3 4 17 Y2 (4) (16) A3 Y3 (5) (15) A4 5 16 Y3 A4 Y4 (6) (14) A5 Y5 A5 6 15 Y4 (7) (13) A6 Y6 (8) (12) A7 Y7 A6 7 14 Y5 (9) (11) A8 Y8 A7 8 13 Y6 A8 9 12 Y7 GND 10 11 Y8 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 2 2014-03-01