1. Functional Description • Low-Voltage 16-Bit Bus Transceiver with Bushold
2. General
The TC74VCXH16245 is a high-performance CMOS 16-bit bus transceiver. Designed for use in 1.8 V, 2.5 V or
3.3 V systems, it achieves high-speed operation while maintaining the CMOS low power dissipation.
This 16-bit bus transceiver is controlled by direction control (DIR) inputs and output enable (OE) inputs which
are common to each byte. It can be used as two 8-bit transceivers or one 16-bit transceiver. The direction of data
transmission is determined by the level of the DIR inputs. The OE inputs can be used to disable the device so
that the busses are effectively isolated.
The A, B data inputs include active bushold circuitry, eliminating the need for external pull-up resisisors to hold
unused or floating data inputs at a valid logic level.
All inputs are equipped with protection circuits against static discharge.
3. Features (Note)
(1) Wide operating temperature range: Topr = -40 to 125
� (Note 1)
(2) Low-voltage operation: VCC = 1.8 to 3.6 V
(3) Bushold on data inputs eliminating the need for external pull-up, pull-down resistors
(4) High-speed operation: tpd = 2.5 ns (max) (VCC = 3.0 to 3.6 V)
tpd = 3.0 ns (max) (VCC = 2.3 to 2.7 V)
tpd = 5.0 ns (max) (VCC = 1.8 V)
(5) 3.6-V tolerant control inputs
(6) Output current: IOH/IOL =
±24 mA (min) (VCC = 3.0 V)
IOH/IOL =
±18 mA (min) (VCC = 2.3 V)
IOH/IOL =
±6 mA (min) (VCC = 1.8 V)
Note: Do not apply a signal to any bus pins when it is in the output mode. Damage may result.
Note 1: Operating Range spec of Topr = -40
� to 125
� is applicable only for the products which manufactured after
April 2020.