Electronic Components Datasheet Search |
|
ISO7221CDRG4 Datasheet(PDF) 1 Page - Texas Instruments |
|
|
|
ISO7221CDRG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 26 page 1 FEATURES APPLICATIONS DESCRIPTION ISO7221xD 1 2 3 4 5 6 7 8 GND2 INB V CC2 V CC1 OUTB GND1 INA OUTA ISO7220xD 1 2 3 4 5 6 7 8 GND2 INB V CC2 V CC1 OUTB GND1 OUTA INA ISO7220A, ISO7220B, ISO7220C, ISO7220M ISO7221A, ISO7221B, ISO7221C, ISO7221M www.ti.com ................................................................................................................................................................ SLLS755H – JULY 2006 – REVISED MAY 2008 DUAL DIGITAL ISOLATORS • 4 kV ESD Protection 2 • 1, 5, 25, and 150-Mbps Signaling Rate Options • High Electromagnetic Immunity – Low Channel-to-Channel Output Skew; • –40°C to 125°C Operating Range 1 ns max • Industrial Fieldbus – Low Pulse-Width Distortion (PWD); 1 ns max – Modbus – Profibus™ – Low Jitter Content; 1 ns Typ at 150 Mbps – DeviceNet™ Data Buses • Typical 25-Year Life at Rated Voltage • Computer Peripheral Interface (see app. note SLLA197 and Figure 20) • Servo Control Interface • 4000-V peak Isolation, 560 V peak VIORM • Data Acquisition – UL 1577, IEC 60747-5-2 (VDE 0884, Rev 2), IEC 61010-1 – 50 kV/ µs Typical Transient Immunity • Operates with 3.3-V or 5-V Supplies The ISO7220 and ISO7221 are dual-channel digital isolators. To facilitate PCB layout, the channels are oriented in the same direction in the ISO7220 and in opposite directions in the ISO7221. These devices have a logic input and output buffer separated by TI’s silicon-dioxide (SiO2) isolation barrier, providing galvanic isolation of up to 4000 V. Used in conjunction with isolated power supplies, these devices block high voltage, isolate grounds, and prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. A binary input signal is conditioned, translated to a balanced signal, then differentiated by the capacitive isolation barrier. Across the isolation barrier, a differential comparator receives the logic transition information, then sets or resets a flip-flop and the output circuit accordingly. A periodic update pulse is sent across the barrier to ensure the proper dc level of the output. If this dc-refresh pulse is not received every 4 µs, the input is assumed to be unpowered or not being actively driven, and the failsafe circuit drives the output to a logic high state. The small capacitance and resulting time constant provide fast operation with signaling rates available from 0 Mbps (dc) to 150 Mbps.(1)The A-, B- and C-option devices have TTL input thresholds and a noise filter at the input that prevents transient pulses from being passed to the output of the device. The M-option devices have CMOS VCC/2 input thresholds and do not have the input noise-filter and the additional propagation delay. These devices require two supply voltages of 3.3 V, 5 V, or any combination. All inputs are 5-V tolerant when supplied from a 3.3-V supply and all outputs are 4-mA CMOS. These devices are characterized for operation over the ambient temperature range of –40 °C to 125°C. (1) The signaling rate of a line is the number of voltage transitions that are made per second expressed in the units bps (bits per second). 1 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. 2 DeviceNet is a trademark of Open DeviceNet Vendors Association. PRODUCTION DATA information is current as of publication date. Copyright © 2006–2008, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
Similar Part No. - ISO7221CDRG4 |
|
Similar Description - ISO7221CDRG4 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |