TC74LCX164245FT
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC74LCX164245FT
16-Bit Dual Supply Bus Transceiver
The TC74LCX164245FT 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 5-V bus and a 3.3-V
or 2.5-V bus in mixed 5-V/3.3-V or 2.5-V supply systems, it achieves
high-speed operation while maintaining the CMOS low power
dissipation.
It is intended for 2 way asynchronous communication between
data busses. The direction of data transmission is determined by the
level of the DIR input. The enable input ( OE ) can be used to disable
Weight: 0.25 g (typ.)
the device so that the buses are effectively isolated. The B-port
interfaces with the 5-V bus, the A-port with the 3.3-V or 2.5-V bus.
All inputs are equipped with protection circuits against static discharge or transient excess voltage.
Features (Note)
•
Bidirectional interface between 5-V and 3.3-V or 2.5-V buses
•
High-speed: tpd = 5.8 ns (max)
(VCCB = 5.0 ± 0.5 V/VCCA = 3.3 ± 0.3 V, Ta = −40 to 85°C)
•
Low power dissipation: ICC = 80 μA (max) (Ta = −40 to 85°C)
•
Symmetrical ouput impedance: IOUTA = ±24 mA (min)
IOUTB = ±24 mA (min)
(VCCA = 3.0 V/VCCB = 4.5 V)
•
Power-down protection provided on all inputs and outputs
•
Allows A port and VCCA to float simultaneously when OE is “H”.
•
Latch-up performance: −500 mA
•
Package: TSSOP
Note:
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.
Start of commercial production
2000-08
1
2014-03-01
