Datasheet > SN75LBC784_11

SN75LBC784_11

更新时间： 2024-11-20 02:58:31

品牌	Logo	应用领域
德州仪器 - TI		驱动
页数	文件大小	规格书
10页	195K
描述
QUADRUPLE RS-423-B DRIVER/RECEIVER

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

SN75LBC784_11 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.

ꢀꢁ ꢂ ꢃꢄ ꢅ ꢆꢇ ꢂꢈ ꢃ ꢉꢆꢉ ꢊꢋ ꢌꢍ ꢎꢏ ꢐꢑꢊ ꢍꢋ ꢊꢒ ꢓꢔ ꢎ ꢎ ꢕꢋꢑ ꢐꢒ ꢍꢌ ꢖꢔꢗ ꢘꢊꢓ ꢐꢑꢊ ꢍꢋ ꢙꢐ ꢑꢕꢚ ꢀꢎ ꢍꢙꢔ ꢓꢑꢒ

ꢓ ꢍꢋ ꢌꢍꢎ ꢏ ꢑꢍ ꢒ ꢖꢕ ꢓ ꢊ ꢌꢊ ꢓ ꢐ ꢑꢊ ꢍꢋꢒ ꢖꢕ ꢎ ꢑꢛꢕ ꢑꢕ ꢎ ꢏꢒ ꢍꢌ ꢆꢕꢜ ꢐ ꢒ ꢇꢋꢒ ꢑꢎ ꢔꢏ ꢕꢋꢑ ꢒ ꢒꢑ ꢐꢋꢙ ꢐꢎ ꢙ ꢝ ꢐꢎ ꢎ ꢐ ꢋꢑꢞꢚ

ꢀꢎ ꢍ ꢙꢔꢓ ꢑ ꢊꢍ ꢋ ꢖꢎ ꢍ ꢓ ꢕ ꢒ ꢒ ꢊꢋ ꢟ ꢙꢍ ꢕꢒ ꢋꢍꢑ ꢋꢕ ꢓꢕ ꢒꢒ ꢐꢎ ꢊꢘ ꢞ ꢊꢋꢓ ꢘꢔꢙ ꢕ ꢑꢕ ꢒꢑꢊ ꢋꢟ ꢍꢌ ꢐꢘ ꢘ ꢖꢐ ꢎ ꢐꢏ ꢕꢑꢕ ꢎ ꢒꢚ

www.ti.com

12 3 4 5 6 7...10

中文翻译

下载PDF

与SN75LBC784_11相关器件

型号	品牌	获取价格	描述	数据表
SN75LBC784DW	TI	获取价格	QUADRUPLE RS-423-B DRIVER/RECEIVER
SN75LBC784DWG4	TI	获取价格	Quadruple RS-423-B Driver/Receiver 28-SOIC
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

与SN75LBC784_11相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

23
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

15
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

45
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

44

产品中心

服务支持

精选活动

关于我们

帮助中心

SN75LBC784_11

SN75LBC784_11 数据手册

与SN75LBC784_11相关器件

与SN75LBC784_11相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

SN75LBC784_11

SN75LBC784_11 数据手册

与SN75LBC784_11相关器件

与SN75LBC784_11相关文章

您还可以找

您在本页遇到什么问题？