Datasheet > SN75LBC784DWG4

SN75LBC784DWG4

更新时间： 2024-11-19 20:52:15

品牌	Logo	应用领域
德州仪器 - TI		驱动信息通信管理光电二极管接口集成电路驱动器
页数	文件大小	规格书
10页	195K
描述
Quadruple RS-423-B Driver/Receiver 28-SOIC

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SN75LBC784DWG4 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	SOIC
包装说明：	SOP, SOP28,.4	针数：	28
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.83
差分输出：	NO	驱动器位数：	4
高电平输入电流最大值：	0.0001 A	输入特性：	DIFFERENTIAL SCHMITT TRIGGER
接口集成电路类型：	LINE TRANSCEIVER	接口标准：	EIA-232; EIA-423-B
JESD-30 代码：	R-PDSO-G28	长度：	17.9 mm
标称负供电电压：	-12 V	功能数量：	4
端子数量：	28	最高工作温度：	70 °C
最低工作温度：		最小输出摆幅：	8 V
最大输出低电流：	0.004 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP28,.4
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	+-12 V
认证状态：	Not Qualified	最大接收延迟：	1000 ns
接收器位数：	4	座面最大高度：	2.65 mm
子类别：	Line Driver or Receivers	最大压摆率：	70 mA
最大供电电压：	13.2 V	最小供电电压：	10.8 V
标称供电电压：	12 V	表面贴装：	YES
技术：	BICMOS	温度等级：	COMMERCIAL
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
最大传输延迟：	2700 ns	宽度：	7.5 mm
Base Number Matches：	1

SN75LBC784DWG4 数据手册

SN75LBC784

www.ti.com

SLLS187B − NOVEMBER 1994 − REVISED JUNE 2007

QUADRUPLE RS-423-B

DRIVER/RECEIVER

DW PACKAGE

(TOP VIEW)

FEATURES

Four Independent Drivers and Receivers

BIAS

Driver Slew Rate Controlled by a Single

Resistor

BIAS

Fast Driver Transition Times Down to

1.5 µs and Receiver Transition Times of

20 ns Typ

BIAS

Internal Thermal-Overload Protection

GND

RS-423-B Inputs and Outputs Designed to

Withstand 25 V

ESD Protection Exceeds 2000 V Per

MIL-STD-833C Method 3015

3Y 12

3C 13

4C 14

17 2B

16 2C

15 1C

LinBICMOS Process Technology

DESCRIPTION

FUNCTION TABLE

The SN75LBC784 performs as four independent

RS-423-B driver/receiver pairs designed to interface data

terminal equipment (DTE) with data circuit-terminating

equipment (DCE) at rates up to 120 kbps and distances to

1.2 km. The SN75LBC784 provides an upgrade to the

RS-232 serial interface and can be backwards-compatible

with existing serial ports while offering the higher

performance required by new faster peripherals, such as

v.34 (v.fast) modems. The RS-232 standard, and

subsequent revisions, only supports data rates up to 20

kbps over about 15 meters of cable. For RS-423-B the data

rate is increased to 120 kbps and transmission distance to

1.2 km by reducing the maximum output signal swing,

increasing the driver output current, and reducing the

receiver input voltage thresholds.

INPUTS

OUTPUTS

H = high level, L = low level,

X = irrelevant, Z = high impedance (off)

? = indeterminate

The receivers consist of differential comparators with hysteresis and resistive attenuation on the inputs. The resistive attenuation

improves the input common-mode range and also provides additional protection from ESD and over-voltage stress. The differential

and common-mode input impedances are sufficiently high to meet RS-423-B. When a differential voltage input of 500 mV is applied

across the entire common-mode range (see Figure 5), the receiver characteristics and bias voltage allow the receiver to remain

in its intended binary state.

The drivers meet all RS-423-B specifications with built-in current limits and thermal overload protection. Slew-rate controlling

circuitry is included in the design, which is adjusted to suit the application by means of an external resistor (R_ws). The slew rate

controlling circuitry also has a default mode—if the R_wspin is shorted to 5 V externally, the transistion time defaults to approximately

1.5 ms. The BIAS input, when shorted to 5 V externally, provides the internal node voltages. The receiver is compatible to RS-232

with the use of external input resistors to meet the RS-232 input resistance specification of 3 kΩ to 7 kΩ.

The SN75LBC784 is characterized for operation over the temperature range of 0°C to +70°C.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments

semiconductor products and disclaimers thereto appears at the end of this data sheet.

LinBiCMOS is a trademark of Texas Instruments Incorporated. All other trademarks are the property of their respective owners.

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与SN75LBC784DWG4相关器件

型号	品牌	获取价格	描述	数据表
SN75LBC784DWR	TI	获取价格	Quadruple RS-423-B Driver/Receiver 28-SOIC
SN75LBC784DWRG4	TI	获取价格	Quadruple RS-423-B Driver/Receiver 28-SOIC
SN75LBC786	TI	获取价格	QUADRUPLE RS-423-B DRIVER/RECEIVER WITH LOOPBACK
SN75LBC786_09	TI	获取价格	QUADRUPLE RS-423-B DRIVER/RECEIVER WITH LOOPBACK
SN75LBC786DW	TI	获取价格	QUADRUPLE RS-423-B DRIVER/RECEIVER WITH LOOPBACK
SN75LBC786DWG4	TI	获取价格	Quadruple RS-423-B Driver/Receiver With Loopback 28-SOIC
SN75LBC968	TI	获取价格	9-CHANNEL BUS TRANSCEIVER WITH ACTIVE TERMINATION
SN75LBC968DL	TI	获取价格	9-CHANNEL BUS TRANSCEIVER WITH ACTIVE TERMINATION
SN75LBC968DLR	TI	获取价格	9-Channel Bus Transceiver With Active Termination 56-SSOP
SN75LBC970A	TI	获取价格	SCSI DIFFERENTIAL CONVERTER-CONTROL

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