TC74VHC138F(EL,K,F Toshiba

TC74VHC138F/FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74VHC138F, TC74VHC138FK 3-to-8 Line Decoder The TC74VHC138 is an advanced high speed CMOS 3-to-8 DECODER TC74VHC138F 2 fabricated with silicon gate C MOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. When the device is enabled, 3 Binary Select inputs (A, B and C) determine which one of the outputs ( Y0 - Y7 ) will go low. When enable input G1 is held low or either G2A or G2Bis held high, decoding function is inhibited and all outputs go high. G1, G2A , and G2B inputs are provided to ease cascade connection and for use as an address decoder for memory systems. TC74VHC138FK 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. Features Weight High speed: t = 5.7 ns (typ.) at V = 5 V pd CC SOP16-P-300-1.27A : 0.18 g (typ.) Low power dissipation: ICC = 4 A (max) at Ta = 25C VSSOP16-P-0030-0.50 : 0.02 g (typ.) High noise immunity: V = V = 28% V NIH NIL CC (min) Power down protection is provided on all inputs. Balanced propagation delays: tpLH tpHL Wide operating voltage range: V = 2 V to 5.5 V CC (opr) Pin and function compatible with 74ALS138 Start of commercial production 1991-11 2019 2019-01-31 1 Toshiba Electronic Devices & Storage Corporation TC74VHC138F/FK Pin Assignment A 1 16 VCC B 2 15 C 14 3 4 13 5 12 G1 6 11 7 10 GND 8 9 (top view) IEC Logic Symbol BIN/OCT DMUX (1) (15) (1) (15) A 1 0 A 0 0 (2) (14) (2) (14) B 2 1 B 1 (3) (13) (3) (13) C 4 2 C 2 2 (12) (12) 3 3 (11) (11) 4 4 & & (6) (10) (6) (10) G1 5 G1 5 (4) (9) (4) (9) EN 6 6 (5) (7) (5) (7) 7 7 Truth Table Inputs Outputs Selected Enable Select Output Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 G1 C B A G2A G2B L X X X X X H H H H H H H H None X H X X X X H H H H H H H H None X X H X X X H H H H H H H H None H L L L L L L H H H H H H H Y0 H L L L L H H L H H H H H H Y1 H L L L H L H H L H H H H H Y2 H L L L H H H H H L H H H H Y3 H L L H L L H H H H L H H H Y4 H L L H L H H H H H H L H H Y5 H L L H H L H H H H H H L H Y6 H L L H H H H H H H H H H L Y7 X: Dont care 2019 2019-01-31 2 Toshiba Electronic Devices & Storage Corporation