TC74VCX245FT(SPL) Toshiba

TC74VCX245FT/FK/FTG TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74VCX245FT, TC74VCX245FK, TC74VCX245FTG Low-Voltage Octal Bus Transceiver with 3.6 V Tolerant Inputs and Outputs The TC74VCX245 is a high performance CMOS octal bus TC74VCX245FT transceiver which is guaranteed to operate from 1.2-V to 3.6-V. Designed for use in 1.5V, 1.8V, 2.5V or 3.3 V systems, it achieves high speed operation while maintaining the CMOS low power dissipation. It is also designed with over voltage tolerant inputs and outputs up to 3.6 V. The direction of data transmission is determined by the level of the DIR inputs. The OE inputs can be used to disable the device so that the busses are effectively isolated. All inputs are equipped with protection circuits against static TC74VCX245FK discharge. Features (Note 1) (Note 2) (Note 3) Low voltage operation: V = 1.2 to 3.6 V CC High speed operation: t = 3.5 ns (max) (V = 3.0 to 3.6 V) pd CC t = 4.2 ns (max) (V = 2.3 to 2.7 V) pd CC t = 8.4 ns (max) (V = 1.65 to 1.95 V) pd CC t = 16.8 ns (max) (V = 1.4 to 1.6 V) pd CC TC74VCX245FTG t = 42.0 ns (max) (V = 1.2 V) pd CC 3.6 V tolerant inputs and outputs. Output current: I /I = 24 mA (min) (V = 3.0 V) OH OL CC I /I = 18 mA (min) (V = 2.3 V) OH OL CC I /I = 6 mA (min) (V = 1.65 V) OH OL CC I /I = 2 mA (min) (V = 1.4 V) OH OL CC VQON20-0404-0.50 Latch-up performance: 300 mA Weight TSSOP20-P-0044-0.65A : 0.08 g (typ.) ESD performance: Machine model 200 V VSSOP20-P-0030-0.50 : 0.03 g (typ.) Human body model 2000 V VQON20-P-0404-0.50 : 0.0145g (typ.) Package: TSSOP VSSOP (US) VQON Bidirectional interface between 2.5 V and 3.3 V signals. (Note 1) Power down protection is provided on all inputs and outputs. (Note 2) Note 1: Do not apply a signal to any bus terminal when it is in the output mode. Damage may result. Note 2: All floating (high impedance) bus terminal must have their input level fixed by means of pull up or pull down resistors. Note 3: When mounting VQON package, the type of recommended flux is RA or RMA. Start of commercial production 1998-06 1 2014-03-01 TC74VCX245FT/FK/FTG Pin Assignment (top view) FT(TSSOP20-P-0044-0.65) FTG(VQON20-P-0404-0.50) FK(VSSOP20-P-0030-0.50) A1 DIR VCC OE B1 DIR 1 20 V CC 20 19 17 16 18 A1 2 19 OE A2 18 B1 3 A2 1 15 B2 A3 4 17 B2 B3 A3 2 14 A4 5 16 B3 A4 3 13 B4 A5 6 15 B4 A5 12 B5 4 A6 7 14 B5 B6 A6 5 11 A7 8 13 B6 6 7 8 9 10 A8 9 12 B7 A7 A8 GND B8 B7 GND 10 11 B8 IEC Logic Symbol 19 OE G3 1 DIR 3 EN 1 BA 3 EN 2 AB 2 18 A1 1 B1 2 3 17 A2 B2 4 16 A3 B3 5 15 A4 B4 6 14 A5 B5 7 13 A6 B6 8 12 A7 B7 9 11 A8 B8 Truth Table Inputs Function Outputs OE DIR A-Bus B-Bus L L A = B Output Input L H B = A Input Output H X Z Z X: Dont care Z: High impedance 2 2014-03-01