Low rDS(on) . . . 1.3 Ω Typical
Avalanche Energy . . . 75 mJ
Eight Power DMOS Transistor Outputs of
250-mA Continuous Current
1.5-A Pulsed Current Per Output
Output Clamp Voltage at 45 V
Four Distinct Function Modes
Low Power Consumption

description
This power logic 8-bit addressable latch controls
open-drain DMOS transistor outputs and is
designed for general-purpose storage applications
in digital systems. Specific uses include
working registers, serial-holding registers, and
decoders or demultiplexers. This is a multifunctional
device capable of storing single-line
data in eight addressable latches with 3-to-8
decoding or demultiplexing mode active-low
DMOS outputs.
Four distinct modes of operation are selectable by
controlling the clear (CLR) and enable (G) inputs
as enumerated in the function table. In the
addressable-latch mode, data at the data-in (D)
terminal is written into the addressed latch. The
addressed DMOS transistor output inverts the
data input with all unaddressed DMOS-transistor
outputs remaining in their previous states. In the
memory mode, all DMOS-transistor outputs
remain in their previous states and are unaffected
by the data or address inputs. To eliminate the
possibility of entering erroneous data in the latch,
enable G should be held high (inactive) while the
address lines are changing. In the 3-to-8 decoding
or demultiplexing mode, the addressed output is inverted with respect to the D input and all other outputs are
high. In the clear mode, all outputs are high and unaffected by the address and data inputs.
Separate power and logic level ground pins are provided to facilitate maximum system flexibility. Pins 1, 10, 11,
and 20 are internally connected, and each pin must be externally connected to the power system ground in order
to minimize parasitic inductance. A single-point connection between pin 9, logic ground (LGND), and pins 1, 10,
11, and 20, power ground (PGND) must be externally made in a manner that reduces crosstalk between the
logic and load circuits.
The TPIC6259 is characterized for operation over the operating case temperature range of –40°C to 125°C.