74LCX16245TTR STMicroelectronics

74LCX16245 Low voltage CMOS 16-bit bus transceiver (3-state) with 5V tolerant inputs and outputs Features 5V tolerant inputs and outputs High speed: t = 4.5ns (Max) at V = 3V PD CC Power down protection on inputs and outputs Symmetrical output impedance: TSSOP48 I = I = 24mA (Min) at V = 3V OH OL CC PCI bus levels guaranteed at 24mA Description Balanced propagation delays: t t PLH PHL The 74LCX16245 is a low voltage CMOS 16 bit Operating voltage range: bus transceiver (3-state) fabricated with sub- micron silicon gate and double-layer metal wiring V (Opr) = 2.0V to 3.6V CC 2 C MOS technology. It is ideal for low power and Pin and function compatible with high speed 3.3V applications it can be interfaced 74 series 16245 to 5V signal environment for both inputs and Latch-up performance exceeds outputs. 500mA (JESD 17) This IC is intended for two-way asynchronous ESD performance: communication between data buses the direction HBM > 2000V of data transmission is determined by DIR input. (MIL STD 883 method 3015) MM > 200V The two enable inputs nG can be used to disable the device so that the buses are effectively isolated. It has same speed performance at 3.3V than 5V AC/ACT family, combined with a lower power consumption. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. All floating bus terminals during High Z State must be held HIGH or LOW. Order codes Part number Package Packaging 74LCX16245TTR TSSOP48 Tape and reel February 2007 Rev 7 1/15 www.st.com 15Contents 74LCX16245 Contents 1 Logic symbols and I/O equivalent circuit 3 2 Pin settings 4 2.1 Pin connection 4 2.2 Pin description 5 3 Logic states 5 3.1 Truth table 5 4 Maximum rating . 6 4.1 Recommended operating conditions . 6 5 Electrical characteristics . 7 6 Test circuit . 9 7 Waveforms 10 8 Package mechanical data 11 9 Revision history . 14 2/15