TC74VHC540FT(EL,K) Toshiba

TC74VHC540,541F/FT/FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74VHC540F,TC74VHC540FT,TC74VHC540FK TC74VHC541F,TC74VHC541FT,TC74VHC541FK Octal Bus Buffer TC74VHC540F/FT/FK Inverted, 3-State Outputs TC74VHC540F, TC74VHC541F TC74VHC541F/FT/FK Non-Inverted, 3-State Outputs The TC74VHC540/TC74VHC541 are advanced high speed CMOS OCTAL BUS BUFFERs fabricated with silicon gate 2 C MOS technology. They achieve the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. TC74VHC540FT, TC74VHC541FT The TC74VHC540 is an inverting type, and the TC74VHC541 is a non-inverting type. When either G1 or G2 are high, the terminal outputs are in the high-impedance state.z An input protection circuit ensures that 0 to 5.5 V can be applied to the input pins without regard to the supply voltage. This device can be used to interface 5 V to 3 V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input voltages. TC74VHC540FK, TC74VHC541FK Features High speed: t = 3.7 ns (typ.) at V = 5 V pd CC Low power dissipation: I = 4 A (max) at Ta = 25C CC High noise immunity: V = V = 28% V (min) NIH NIL CC Power down protection is provided on all inputs. Balanced propagation delays: t t pLH pHL Wide operating voltage range: V = 2 V to 5.5 V CC (opr) Weight Low noise: V = 1.0 V (max) OLP SOP20-P-300-1.27A : 0.22 g (typ.) Pin and function compatible with 74ALS540/541 TSSOP20-P-0044-0.65A : 0.08 g (typ.) VSSOP20-P-0030-0.50 : 0.03 g (typ.) 1 2013-05-23 TC74VHC540,541F/FT/FK Pin Assignment TC74VHC540 TC74VHC541 G 1 1 20 V G1 1 20 V CC CC A1 2 19 G2 A1 2 19 G2 A2 18 Y1 A2 18 Y1 3 3 A3 4 17 Y2 A3 4 17 Y2 A4 5 16 Y3 A4 5 16 Y3 A5 6 15 Y4 A5 6 15 Y4 A6 7 14 Y5 A6 7 14 Y5 A7 8 13 Y6 A7 8 13 Y6 A8 9 12 Y7 A8 9 12 Y7 GND 10 11 Y8 GND 10 11 Y8 (top view) (top view) IEC Logic Symbol TC74VHC540 TC74VHC541 (1) & (1) & G 1 EN G1 EN (19) (19) G 2 G2 (2) (18) (2) (18) A1 Y1 A1 Y1 (3) (17) (3) (17) A2 Y2 A2 Y2 (4) (16) (4) (16) A3 Y3 A3 Y3 (5) (15) (5) (15) A4 Y4 A4 Y4 (6) (14) (6) (14) A5 Y5 A5 Y5 (7) (13) (7) (13) A6 Y6 A6 Y6 (8) (12) (8) (12) A7 Y7 A7 Y7 (9) (11) (9) (11) A8 Y8 A8 Y8 Truth Table Inputs Outputs G 1 G2 A Y Y n n n H X X Z Z X H X Z Z L L H H L L L L L H X: Dont care Z: High impedance Y : TC74VHC541 n Y : TC74VHC540 n 2 2013-05-23