"RS232接收器带±15kV ESD保护的TRS3222E.pdf文档详解"
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The TI-TRS3222E is a high-performance RS-232 transceiver with ±15kV ESD protection, designed for applications requiring reliable communication over serial connections. This multi-channel driver and receiver operates on a 3V to 5.5V power supply and meets the requirements of TIA/EIA-232-F and ITU v.28 standards. With high-speed rates of up to 500kbit/s, the TRS3222E is suitable for industrial PCs, wired networks, data centers, laptops, and handheld devices.
The TRS3222E features two drivers, two receivers, and a dual charge pump circuit, providing robust protection against ESD events up to ±15kV. It also includes external capacitors for enhanced performance and compatibility with 5V logic inputs and 3.3V power sources. The low standby current of 1μA ensures efficient power consumption, making it ideal for applications requiring energy efficiency.
In summary, the TI-TRS3222E is a versatile RS-232 transceiver with reliable ESD protection, high-speed communication capabilities, and low power consumption. Its compact design and compatibility with various devices make it a suitable choice for a wide range of industrial, networking, and portable applications. With its advanced features and performance, the TRS3222E provides a reliable and efficient solution for communication needs in demanding environments.
6.4 Recommended Operating Conditions
See 图 9-1 and
(1)
MIN NOM MAX UNIT
V
CC
Supply voltage
V
CC
= 3.3 V 3 3.3 3.6
V
V
CC
= 5 V 4.5 5 5.5
V
IH
Driver and control high-level input voltage DIN, EN, PWRDOWN
V
CC
= 3.3 V 2
V
V
CC
= 5 V 2.4
V
IL
Driver and control low-level input voltage DIN, EN, PWRDOWN 0.8 V
V
I
Driver and control input voltage DIN, EN, PWRDOWN 0 5.5 V
V
I
Receiver input voltage
–25
25 V
T
A
Operating free-air temperature
TRS3222EC 0 70
°C
TRS3222EI
–40
85
(1) Test conditions are C1–C4 = 0.1 μF at V
CC
= 3.3 V ± 0.3 V; C1 = 0.047 μF, C2–C4 = 0.33 μF at V
CC
= 5 V ± 0.5 V.
6.5 Thermal Information
THERMAL METRIC
(1)
TRS3222E
UNITDB (SSOP) DW (SOIC) PW (TSSOP)
20 Pins 20 Pins 20 Pins
R
θJA
Junction-to-ambient thermal resistance 70 58
94.1
°C/W
R
θJC(top)
Junction-to-case (top) thermal resistance
33.6 30.0 35.2
°C/W
R
θJB
Junction-to-board thermal resistance
36.4 29.6 45.5
°C/W
ψ
JT
Junction-to-top characterization parameter
4.8 7.7 3.1
°C/W
ψ
JB
Junction-to-board characterization
parameter
35.9 29.3 45.1
°C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC package thermal metrics application
report.
6.6 Electrical Characteristics
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see 图 9-1)
PARAMETER TEST CONDITIONS
(2)
MIN TYP
(1)
MAX UNIT
I
I
Input leakage current ( EN, PWRDOWN) ±0.01 ±1
μA
I
CC
Supply current No load, PWRDOWN at V
CC
0.3 1 mA
Supply current (powered off) No load, PWRDOWN at GND 1 10
μA
(1) All typical values are at V
CC
= 3.3 V or V
CC
= 5 V, and T
A
= 25°C.
(2) Test conditions are C1–C4 = 0.1 μF at V
CC
= 3.3 V ± 0.3 V; C1 = 0.047 μF, C2–C4 = 0.33 μF at V
CC
= 5 V ± 0.5 V.
www.ti.com.cn
TRS3222E
ZHCSON3A – JUNE 2007 – REVISED AUGUST 2021
Copyright © 2021 Texas Instruments Incorporated
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