TC74LCXR164245FT_07 Datasheet, PDF (1/11 Pages) Toshiba Semiconductor – 16-Bit Dual Supply Bus Transceiver with Series Resistor

TC74LCXR164245FT
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LCXR164245FT
16-Bit Dual Supply Bus Transceiver with Series Resistor
The TC74LCXR164245FT 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
the device so that the buses are effectively isolated. The B-port
Weight: 0.25 g (typ.)
interfaces with the 5-V bus, the A-port with the 3.3-V or 2.5-V-bus.
The 26-Ω series resistor helps reducing output overshoot and undershoot without external resistor.
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
• 26-Ω series resistors on outputs
• High-speed: t_pd = 6.8 ns (max)
(V_CCB = 5.0 ± 0.5 V/V_CCA = 3.3 ± 0.3 V, Ta = −40 to 85°C)
• Low power dissipation: I_CC = 80 μA (max) (Ta = −40 to 85°C)
• Symmetrical output impedance: I_OUTB = ±12 mA (min)
I_OUTA = ±12 mA (min)
(V_CCB = 4.5V/V_CCA = 3.0 V)
• Power-down protection is provided on all inputs and outputs.
• Allows A port and V_CCA 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.
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2007-10-19