THVD1400D

Texas InstrumentsExtended

-40℃~+125℃ 1 1 1.5mA 256 3V~5.5V 500Kbps Enable shutdown、Tx/Rx enable Half-Duplex Transceiver ±12kV SOIC-8 RS-485 / RS-422 ICs ROHS

Datasheet JLCPCB LCSC

Part id: ti/THVD1400D
Category: RS 485, RS 422 ICs
Package: SOIC-8
Pins: 8
In stock: 7,138 at JLCPCB (C3235232)
Used on: 13 open-source boards

Overview

The THVD1400D is a RS 485, RS 422 IC made by Texas Instruments in a SOIC-8 package with 8 pins. -40℃~+125℃ 1 1 1.5mA 256 3V~5.5V 500Kbps Enable shutdown、Tx/Rx enable Half-Duplex Transceiver ±12kV SOIC-8 RS-485 / RS-422 ICs ROHS.

PCBKit's library has its KiCad symbol (Interface_UART:THVD1400D, from KiCad's library) and its footprint (Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. 7,138 are in stock at JLCPCB (part C3235232). 13 open-source boards in 10 repositories on GitHub use it.

Symbol

Interface_UART:THVD1400DFrom KiCad's library

Footprint

Package_SO:SOIC-8_3.9x4.9mm_P1.27mmFrom KiCad's library

From the datasheet

Supply, least: 3 V · VCC, recommended operating min · p. 5
Supply, most: 5.5 V · VCC, recommended operating max · p. 5
Supply, absolute maximum: 7 V · VCC, absolute max · p. 4
Works from: -40 °C · TA, operating ambient min · p. 5
Works up to: 125 °C · TA, operating ambient max · p. 5
Junction, hottest: 170 °C · TJ, absolute max · p. 4
Takes working: 1.5 mA · VCC = 3.6 V, driver and receiver enabled, no load, typical · p. 6
Takes at most: 3 mA · VCC = 5.5 V, driver and receiver enabled, no load, max · p. 6
Takes asleep: 100 nA · Driver and receiver disabled, no load, typical · p. 6
A pin gives at most: 24 mA · Receiver output current, absolute max source or sink · p. 4
Data rate, most: 500 kbit/s · THVD1400 signaling rate max · p. 5
Junction to air (D (SOIC)): 126 K/W · Junction to ambient · p. 5
Junction to case (D (SOIC)): 66.2 K/W · Junction to case, top · p. 5
Junction to board (D (SOIC)): 69.4 K/W · Junction to board · p. 5

What it is and has

Standard: TIA/EIA-485A · p. 1
Interface: Half-duplex RS-422/RS-485 · p. 1
Data rate: 500kbps · p. 1
Protection: Open-circuit, short-circuit and idle-bus fail-safe · p. 1
Bus loading: 1/8 unit load, up to 256 bus nodes · p. 1
Hot-plug support: Glitch-free power-up and power-down · p. 1
Protection: ±16kV HBM and ±12kV IEC 61000-4-2 contact ESD protection on bus pins · p. 16

Specifications

Parameter	Conditions	As printed	Page
电源电压 VCC		min -0.5 · max 7 V	4
任何逻辑引脚（D、DE 或 RE）上的输入电压 VL		min -0.3 · max 5.7 V	4
A 或 B 输入上的电压范围 VA、VB		min -16 · max 16 V	4
接收器输出电流 IO		min -24 · max 24 mA	4
结温 TJ		max 170 °C	4
存储温度 TSTG		min -65 · max 150 °C	4
静电放电 V(ESD)	人体放电模型（HBM），符合 ANSI/ESDA/JEDEC JS-001；总线端子（A、B）和 GND	min -16000 · max 16000 V	4
静电放电 V(ESD)	人体放电模型（HBM），符合 ANSI/ESDA/JEDEC JS-001；所有其他引脚	min -4000 · max 4000 V	4
静电放电 V(ESD)	充电器件模型 (CDM)，符合 ANSI/ESDA/JEDEC JS-002	min -1500 · max 1500 V	4
静电放电 V(ESD)	IEC 61000-4-2 ESD（接触放电），总线端子和接地 (GND)	min -12000 · max 12000 V	4
静电放电 V(ESD)	IEC 61000-4-2 ESD（空气间隙放电），总线端子和接地 (GND)	min -15000 · max 15000 V	4
静电放电 V(ESD)	IEC 61000-4-4 EFT（快速瞬变或突发）、总线端子和 GND	min -4000 · max 4000 V	4
电源电压 VCC		min 3 · typ 5 · max 5.5 V	5
差分输入电压 VID		min -12 · max 12 V	5
任何总线端子上的输入电压 VI		min -7 · max 12 V	5
高电平输入电压（驱动器、驱动器启用和接收器启用输入） VIH		min 2 · max 5.5 V	5
低电平输入电压（驱动器、驱动器启用和接收器启用输入） VIL		min 0 · max 0.8 V	5
输出电流 IO	驱动器	min -60 · max 60 mA	5
输出电流 IO	接收器	min -8 · max 8 mA	5
差分负载电阻 RL		min 54 · typ 60 Ω	5
信令速率：THVD1400 1/tUI	THVD1400	max 500 kbps	5
结温 TJ		min -40 · max 150 °C	5
工作环境温度 TA		min -40 · max 125 °C	5
热关断阈值（温度上升） TSHDN		min 150 · typ 170 °C	5
热关断迟滞 THYS		typ 15 °C	5
结至环境热阻 RθJA	D (SOIC), 8 引脚	typ 126 °C/W	5
结至外壳（顶部）热阻 RθJC(top)	D (SOIC), 8 引脚	typ 66.2 °C/W	5
结至电路板热阻 RθJB	D (SOIC), 8 引脚	typ 69.4 °C/W	5
结至顶部特征参数 ψJT	D (SOIC), 8 引脚	typ 18.7 °C/W	5
结至电路板特征参数 ψJB	D (SOIC), 8 引脚	typ 68.7 °C/W	5
功率耗散 PD	THVD1400；驱动器和接收器被启用；VCC = 5.5V、TA = 125°C、50% 占空比方波信号（在最大信号传输速率下）；未终止；RL = 300Ω，CL = 50pF	typ 145 mW	5
功率耗散 PD	THVD1400；驱动器和接收器被启用；VCC = 5.5V、TA = 125°C、50% 占空比方波信号（在最大信号传输速率下）；RS-422 负载；RL = 100Ω，CL = 50pF	typ 175 mW	5
功率耗散 PD	THVD1400；驱动器和接收器被启用；VCC = 5.5V、TA = 125°C、50% 占空比方波信号（在最大信号传输速率下）；RS-485 负载；RL = 54Ω，CL = 50pF	typ 235 mW	5
驱动器差分输出电压幅度 │VOD│	RL = 60Ω，-7V ≤ Vtest ≤ 12V；参阅图 6-1	min 1.5 · typ 2 V	6
驱动器差分输出电压幅度 │VOD│	RL = 60Ω，-7V ≤ Vtest ≤ 12V，4.5V ≤ Vcc ≤ 5.5V；参阅图 6-1	min 2.1 · typ 3 V	6
驱动器差分输出电压幅度 │VOD│	RL = 100Ω，CL = 50pF；参阅图 6-2	min 2 · typ 2.5 V	6
驱动器差分输出电压幅度 │VOD│	RL = 54 Ω，CL = 50 pF；参阅图 6-2	min 1.5 · typ 2 V	6
驱动器差分输出电压幅度 │VOD│	RL = 54Ω，4.5V ≤ Vcc ≤ 5.5V；参阅图 6-2	min 2.1 · typ 3 V	6
驱动器差分输出电压幅度的改变 Δ│VOD│	RL = 54Ω 或 100Ω，CL = 50pF；参阅图 6-2	min -50 · max 50 mV	6
稳定状态共模输出电压 VOC(SS)	RL = 54Ω 或 100Ω，CL = 50pF；参阅图 6-2	min 1 · max 3 V	6
差分驱动器共模输出电压的变化 ΔVOC	RL = 54Ω 或 100Ω，CL = 50pF；参阅图 6-2	min -50 · max 50 mV	6
峰值到峰值驱动器共模输出电压 VOC(PP)	RL = 54Ω，CL = 50pF，VCC = 5V；参阅图 6-2	typ 520 mV	6
峰值到峰值驱动器共模输出电压 VOC(PP)	RL = 54Ω，CL = 50pF，VCC = 3.3V；参阅图 6-2	typ 250 mV	6
驱动器短路输出电流 │IOS│	DE = VCC，-7V ≤ [VA 或 VB] ≤ 12V，或 A 引脚短接到 B 引脚	min -250 · max 250 mA	6
总线输入电流（驱动器禁用） II	DE = 0V，VCC = 0V 或 5.5V；VI = 12 V	typ 75 · max 100 uA	6
总线输入电流（驱动器禁用） II	DE = 0V，VCC = 0V 或 5.5V；VI = –7 V	min -97 · typ -70 uA	6
正向接收器差分输入电压阈值 VIT+	-7V ≤ VCM ≤ 12V	typ -70 · max -45 mV	6
负向接收器差分输入电压阈值 VIT–	-7V ≤ VCM ≤ 12V	min -200 · typ -150 mV	6
接收器差分输入电压阈值迟滞 (VIT+ – VIT–) VHYS	-7V ≤ VCM ≤ 12V	min 30 · typ 50 mV	6
接收器低电平输出电压 VOL	IOL=4mA	typ 0.2 · max 0.4 V	6
接收器高阻抗输出电流 IOZ	VO = 0V 或 VCC、RE = VCC	min -1 · max 1 uA	6
输入电流（D、DE、RE） IIN		min -5 · max 5 uA	6
电源电流（静态） ICC	VCC = 3.6 V；驱动器和接收器被启用；DE = VCC，RE = 0，无负载	typ 1500 · max 1800 uA	6
电源电流（静态） ICC	VCC = 3.6 V；原文标注驱动器和接收器被禁用；DE = VCC，RE = VCC，无负载	typ 1000 · max 1500 uA	6
电源电流（静态） ICC	VCC = 3.6 V；驱动器被禁用，接收器被启用；DE = 0，RE = 0，无负载	typ 700 · max 900 uA	6
电源电流（静态） ICC	VCC = 3.6 V；驱动器和接收器被禁用；DE = 0，RE = VCC，无负载	typ 0.1 · max 1 uA	6
电源电流（静态） ICC	VCC = 5.5 V；驱动器和接收器被启用；DE = VCC，RE = 0，无负载	typ 1700 · max 3000 uA	6
电源电流（静态） ICC	VCC = 5.5 V；驱动器被启用，接收器被禁用；DE = VCC，RE = VCC，无负载	typ 1300 · max 2500 uA	6
电源电流（静态） ICC	VCC = 5.5 V；驱动器被禁用，接收器被启用；DE = 0，RE = 0，无负载	typ 800 · max 1000 uA	6
电源电流（静态） ICC	VCC = 5.5 V；驱动器和接收器被禁用；DE = 0，RE = VCC，无负载	typ 0.1 · max 1 uA	6

Ordering codes, by the datasheet

THVD1400DR: SOIC (D), 8 pins · 2500 | LARGE T&R; NIPDAU; -40 to 125°C · p. 21
THVD1400DR.A: SOIC (D), 8 pins · 2500 | LARGE T&R; NIPDAU; -40 to 125°C · p. 21
THVD1400DRG4: SOIC (D), 8 pins · 2500 | LARGE T&R; NIPDAU; -40 to 125°C · p. 21
THVD1400DRG4.A: SOIC (D), 8 pins · 2500 | LARGE T&R; NIPDAU; -40 to 125°C · p. 21

Parameters

Communication Mode: Half-Duplex
Current - Supply: 1.5mA
Current - Supply(Max): 3mA
Data Rate: 500kbps
ESD Protect: ±12kV
Features: Enable shutdown
Junction Temperature(Max): 170℃
Number of Drivers: 1
Number of Nodes: 256
Number of Receivers: 1
Operating Temperature: -40℃~+125℃
Output Current per Pin(Max): 24mA
Quiescent Supply Current: 1.5mA
Standby Current: 100nA
Thermal Resistance(Junction to Ambient): 126℃/W
Thermal Resistance(Junction to Board): 69.4℃/W
Thermal Resistance(Junction to Case): 66.2℃/W
Type: Transceiver
Voltage - Supply: 3V~5.5V
Voltage - Supply(Absolute Max): 7V

Order codes

THVD1400DRLCSC C3235232

Pinout

The pins of the THVD1400D
Pin	Name	Type
1	RO	Output
2	RE	Input
3	DE	Input
4	DI	Input
5	GND	Power in
6	A	Input/output
7	B	Input/output
8	VCC	Power in

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Open-source boards using it

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Parts like it

Questions

Is there a KiCad symbol and footprint for the THVD1400D?

Yes. The symbol is Interface_UART:THVD1400D and the footprint Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the THVD1400D?

SOIC-8, with 8 pins. Its footprint is drawn on this page.

Where is the THVD1400D datasheet?

Texas Instruments publishes it: the Datasheet link on this page opens it.

Where can I order the THVD1400D?

JLCPCB lists it as part C3235232, with 7,138 in stock; the sellers' links on this page open their listings.

What can replace the THVD1400D?

Parts like it in the library: the SP3485EN-L/TR by MaxLinear, the SP485EEN-L/TR by MaxLinear, the SN75176BD by Texas Instruments and the MAX485ESA+T by Maxim Integrated (Analog Devices). Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the THVD1400D?

13 boards in 10 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

THVD1400D

Overview

Symbol

Footprint

From the datasheet

What it is and has

Specifications

Ordering codes, by the datasheet

Open-source boards using it

Mystery box v3

KinetiCoreDC

Base

FOC CONTROLLER V2

LineSlat

Rs485 breakout

Helio-485

IbScaleFeederLite

Parts like it

SP3485EN-L/TR

SP485EEN-L/TR

SN75176BD

MAX485ESA+T

MAX13487EESA+T

THVD2450D

TP8485E-SR

SP3078EEN-L/TR