TC74LCX163245FT
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC74LCX163245FT
16-Bit Dual Supply Bus Transceiver
The TC74LCX163245FT is a dual supply, advanced high-speed
CMOS 16-bit dual supply voltage interface bus transceiver
fabricated with silicon gate CMOS technology.
Designed for use as an interface between a 3.3-V or a 2.5-V bus
and a 5-V bus in mixed 3.3-V or 2.5-V/5-V supply systems, it
achieves high-speed operation while maintaining the CMOS low
power dissipation. It is intended for two-way asynchronous
communication between data busses.
The direction of data transmission is determined by the level of
the DIR input.
Weight: 0.25 g (typ.)
The enable input ( OE ) can be used to disable the device so
that the buses are effectively isolated. The B-port interfaces with
the 3.3-V or 2.5-V bus, the A-port with the 5 V bus.
All inputs are equipped with protection circuits against static discharge or transient excess voltage.
Features (Note 1) (Note 2)
•
Bidirectional interface between 3.3 V or 2.5 V buses and 5 V buses
•
High-speed operation:
tpd = 7.0 ns (max)
(VCCB = 3.3 ± 0.3 V / VCCA = 5 ± 0.5 V, Ta = −40 to 85°C)
•
Low power dissipation: ICC = 80 μA (max) (Ta = −40 to 85°C)
•
Symmetrical ouput impedance: IOUTB = ±24 mA (min)
IOUTA = ±24 mA (min)
(VCCB = 3.0 V / VCCA = 4.5 V)
•
Power-down protection provided on all inputs and outputs
•
Allows A port and VCCA to float simultaneously in high state at OE pin
•
Latch-up performance: −500 mA
•
ESD performance: Machine model > ±200 V (Note 2)
•
Package: TSSOP
Note 1: Do not apply a signal to any bus pins when it is in the output mode.
Damage may result. All floating (high impedance) bus pins must have their input fixed by means of pull-up
or pull-down resistors.
Note 2: This device is electrostatic sensitivity (human body model > 1 kV).
Please handle with caution.
4
2008-04-14
