Datasheet

SN54ABTH162260, SN74ABTH162260
12-BIT TO 24-BIT MULTIPLEXED D-TYPE LATCHES
WITH SERIES-DAMPING RESISTORS AND 3-STATE OUTPUTS
SCBS240D – JUNE 1992 – REVISED MAY 1997
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
description (continued)
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
When V
CC
is between 0 and 2.1 V, the device is in the high-impedance state during power up or power down.
However, to ensure the high-impedance state above 2.1 V, OE should be tied to V
CC
through a pullup resistor;
the minimum value of the resistor is determined by the current-sinking capability of the driver.
The SN54ABTH162260 is characterized for operation over the full military temperature range of –55°C to
125°C. The SN74ABTH162260 is characterized for operation from –40°C to 85°C.
Function Tables
B TO A (OEB = H)
INPUTS
OUTPUT
1B 2B SEL LE1B LE2B OEA
A
H X H H X L H
L XHHXL L
X XHLXL A
0
X HLXHL H
X LLXHL L
X XLXLL A
0
X X X X X H Z
A TO B (OEA = H)
INPUTS
OUTPUTS
A LEA1B LEA2B OE1B OE2B 1B 2B
H H H L L H H
L HHLLL L
H HLLLH2B
0
L HLLLL2B
0
H LHLL1B
0
H
L LHLL1B
0
L
X LLLL1B
0
2B
0
X XXHHZZ
X X X L H Active Z
X XXHLZActive
X X X L L Active Active