Datasheet > 驱动程序和接口 > 线路驱动器或接收器> DS2480B+T&R

DS2480B+T&R

更新时间： 2024-02-13 20:17:54

品牌	Logo	应用领域
美信 - MAXIM		线路驱动器或接收器驱动程序和接口接口集成电路光电二极管
页数	文件大小	规格书
32页	702K
描述
Line Driver, 1 Func, 1 Driver, PDSO8, 0.150 INCH, ROHS COMPLIANT, SOP-8

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DS2480B+T&R 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	SOP, SOP8,.25
针数：	8	Reach Compliance Code：	not_compliant
风险等级：	5.87	JESD-30 代码：	R-PDSO-G8
JESD-609代码：	e0	湿度敏感等级：	1
端子数量：	8	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP8,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
电源：	5 V	认证状态：	Not Qualified
子类别：	Serial IO/Communication Controllers	标称供电电压：	5 V
表面贴装：	YES	技术：	CMOS
温度等级：	INDUSTRIAL	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL

DS2480B+T&R 数据手册

DS2480B

Table 1. COMMUNICATION COMMAND CODES

BIT

FUNCTION BIT 7 BIT 6 BIT 5

BIT 4

BIT 3, BIT 2

BIT 1

00 reg. speed

01 flex. speed

10 OD. speed

11 reg. speed

00 reg. speed

01 flex. speed

10 OD. speed

11 reg. speed

00 reg. speed

01 flex. speed

0 = write 0

1 = write 1

Single Bit

See Text

Accelerator

Control

0 = accelerator off

1 = accelerator on

See Text

Reset

Pulse

(don’t care)

10 OD. speed

11 reg. speed

0 = 5V strong pullup

1 = 12V prog. pulse

11 pulse

See Text

Table 2. COMMUNICATION COMMAND RESPONSE

FUNCTION BIT 7 BIT 6 BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

1-Wire read back,

BIT 0

Single Bit

same as sent

both bits same value

00 = 1-Wire shorted

01 = presence pulse

10 = alarming presence

pulse

Reset

Pulse

11 = no presence pulse

undefined

same as sent

X: This bit is reserved and undefined. In previous data sheet versions this bit was used to indicate that a

programming voltage was present.

Search Accelerator Control

The Search Accelerator Control command is used to set or reset the Search Accelerator control flag. Bit 4

of the command code contains the state to which the accelerator control flag is to be set. If the flag is set

to a 1 (on) the device translates every byte received in Data Mode into a 12-bit sequence on the 1-Wire

bus. For details on how the Search Accelerator works please refer to the section Search Accelerator

Operation. Before activating the Search Accelerator, one must make sure that the strong pullup after

every byte is disarmed (see Pulse Command). The Search Accelerator command does not generate a

command response byte.

Although the Search Accelerator Control command itself does not generate any 1-Wire activity, it can be

used to select the communication speed on the 1-Wire bus. The speed selection (if different from the

previous setting, e.g., from a Reset command) will take effect immediately.

Pulse

The Pulse command serves several functions that are selected by the contents of bit 1 and bit 4 of the

command code. The main functions are generating a strong pullup to 5V and generating 12V

programming pulses for EPROM devices (if the 12V are available at the V_PPpin). The secondary function

7 of 32

1...4 5 678 9 10...32

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