TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
Octal Schmitt Bus Transceiver
The TC74VHCV245FK is an advanced high speed CMOS OCTAL BUS
TRANSCEIVER fabricated with silicon gate CMOS technology.
It achieves the high speed operation similar to equivalent Bipolar Schottky
TTL 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
The enable input ( G ) can be used to disable the device so that the busses
are effectively isolated.
Input pin and bus terminal have hysteresis between the positive-going and
negative-going thresholds. Thus the TC74VHCV245FK is capable of
squaring up transitions of slowly changing input signals and provides an
: 0.03 g ( typ.)
improved noise immunity.
Input protection and output circuit ensure that 0 to 5.5 V can be applied to the input and output (Note) pins without regard to the
supply voltage. These structure prevents device destruction due to mismatched supply and input/output voltages such as battery
back up, etc.
Note: Output in off-state.
High speed: tpd = 3.8 ns (typ.) at VCC = 5 V
Low power dissipation: ICC = 2 μA (max) at Ta = 25°C
Wide operating voltage range: VCC (opr) = 1.8 V to 5.5 V
Ouput current: |IOH|/IOL = 16 mA (min) (VCC = 4.5 V)
Available in VSSOP (US)
Power-down protection provided on all inputs and outputs
Pin and function compatible with the 74 series
(74AC/VHC/HC/F/ALS/LS etc.) 245 type
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 levels fixed by means of pull-up or pull-down resistors.
Toshiba Electronic Devices & Storage Corporation
Start of commercial production