TC74VCXHR162543FT Datasheet, PDF (1/15 Pages) Toshiba Semiconductor – Low-Voltage 16-Bit Registered Transceiver with Bushold

TC74VCXHR162543FT
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74VCXHR162543FT
Low-Voltage 16-Bit Registered Transceiver with Bushold
The TC74VCXHR162543FT is a high-performance CMOS
16-bit registered 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.
The TC74VCXHR162543FT can be used as two 8-bit
transceivers or one 16-bit transceiver. Separate latch-enable
(LEAB or LEBA) and output-enable (OEAB or OEBA) inputs are
provided for each register to permit independent control in either
direction of data flow.
The A-to-B enable (CEAB) input must be low in order to enter
data from A or to output data from B. If CEAB is low and LEAB
Weight: 0.25 g (typ.)
is low, the A-to-B latches are transparent; a subsequent
low-to-high transition of LEAB puts the Alatches in the storage mode. With CEAB and OEAB both low, the 3-state
B outputs are active and reflect the data present at the output of the A latches.
Data flow from B to A is similar but requires using the CEBA, LEBA, and OEBA inputs.
When the OE input is high, the outputs are in a high-impedance state. This device is designed to be used with
3-state memory address drivers, etc.
The 26-Ω series resistor helps reducing output overshoot and undershoot without external resistor.
The A, B data inputs include active bushold circuitry, eliminating the need for external pull-up resistors to hold
unused or floating data inputs at a valid logic level.
All inputs are equipped with protection circuits against static discharge.
Features (Note)
• 26-Ω series resistors on outputs
• Low-voltage operation: V_CC = 1.8 to 3.6 V
• Bushold on data inputs eliminating the need for external pull-up/pull-down resistors
• High-speed operation: t_pd = 4.4 ns (max) (V_CC = 3.0 to 3.6 V)
: t_pd = 5.4 ns (max) (V_CC = 2.3 to 2.7 V)
: t_pd = 9.8 ns (max) (V_CC = 1.8 V)
• 3.6-V tolerant control inputs
• Output current: I_OH/I_OL = ±12 mA (min) (V_CC = 3.0 V)
: I_OH/I_OL = ±8 mA (min) (V_CC = 2.3 V)
: I_OH/I_OL = ±4 mA (min) (V_CC = 1.8 V)
• Latch-up performance: −300 mA
• ESD performance: Machine model ≥ ±200 V
Human body model ≥ ±2000 V
• Package: TSSOP
Note: Do not apply a signal to any bus pins when it is in the output mode. Damage may result.
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2007-10-19