Datasheet

www.ti.com
SN74ALVCH16646
16-BIT BUS TRANSCEIVER AND REGISTER
WITH 3-STATE OUTPUTS
SCES032F – JULY 1995 – REVISED SEPTEMBER 2004
FUNCTION TABLE
INPUTS DATA I/Os
OPERATION OR FUNCTION
OE DIR CLKAB CLKBA SAB SBA A1–A8 B1–B8
X X ↑ X X X Input Unspecified
(1)
Store A, B unspecified
(1)
X X X ↑ X X Unspecified
(1)
Input Store B, A unspecified
(1)
H X ↑ ↑ X X Input Input Store A and B data
H X H or L H or L X X Input disabled Input disabled Isolation, hold storage
L L X X X L Output Input Real-time B data to A bus
L L X H or L X H Output Input Stored B data to A bus
L H X X L X Input Output Real-time A data to B bus
L H H or L X H X Input Output Stored A data to B bus
(1) The data-output functions may be enabled or disabled by various signals at OE and DIR. Data-input functions always are enabled; i.e.,
data at the bus terminals is stored on every low-to-high transition of the clock inputs.
2