TPIC6B259DWR屬于集成電路（IC）的鎖存器。由美國(guó)德州儀器公司制造生產(chǎn)的TPIC6B259DWR鎖存器鎖存器是類(lèi)似于觸發(fā)器的基本數(shù)字存儲(chǔ)設(shè)備，但是不同之處在于，在鎖存使能（或類(lèi)似命名）信號(hào)處于有效邏輯狀態(tài)的任何時(shí)間，保持的邏輯狀態(tài)都可以改變。“透明”鎖存器還允許設(shè)備輸出在鎖存使能信號(hào)有效時(shí)反映輸入的當(dāng)前狀態(tài)，而相反的是，狀態(tài)僅在保持狀態(tài)已固定時(shí)改變。

Low rDS(on) . . . 5 W Typical

Avalanche Energy . . . 30 mJ

Eight Power DMOS-Transistor Outputs of

150-mA Continuous Current

500-mA Typical Current-Limiting Capability

Output Clamp Voltage . . . 50 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 and 3-to-8

decoder or demultiplexer with 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 off. In the clear mode, all outputs are off and unaffected by the address and data inputs. When data

is low for a given output, the DMOS-transistor output is off. When data is high, the DMOS-transistor output has

sink-current capability.

Outputs are low-side, open-drain DMOS transistors with output ratings of 50 V and 150-mA continuous

sink-current capability. Each output provides a 500-mA typical current limit at TC = 25°C. The current limit

decreases as the junction temperature increases for additional device protection.

The TPIC6B259 is characterized for operation over the operating case temperature range of –40°C to 125°C.