ISO7221M
Dual-Channel Digital IsolatorThe ISO7221M is a dual-channel digital isolator from Texas Instruments. View the full ISO7221M datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
ISO7221M shares its datasheet with ISO7221, whose page lists every part number it covers.
Official ISO7221M datasheet (PDF) — the source this page was extracted from.
Manufacturer
Texas InstrumentsCategory
Integrated CircuitsISO7221M Key Specifications
| Parameter | Value |
|---|---|
| ICC1 quiescent (5 V supplies, no load) | 1 mA typ / 2 mA max (ISO7220x); 8.5 mA typ / 17 mA max (ISO7221) |
| ICC2 quiescent (5 V supplies, no load) | 16 mA typ / 31 mA max (ISO7220x); 8.5 mA typ / 17 mA max (ISO7221x) |
| ISO7221C/M ICC1 at 25 Mbps (12.5 MHz clock, no load) | 12 mA typ / 22 mA max |
| VOH | 4.6 V typ at IOH = -4 mA (min VCC - 0.8 V); VOL: 0.2 V typ / 0.4 V max at IOL = 4 mA |
| Input hysteresis | 150 mV typ |
| Input current IIH/IIL | ±10 μA max |
| Barrier capacitance | 1 pF; isolation resistance >10^12 Ω (25 °C) |
| Clearance/creepage | 4 mm each; CTI ≥400 V |
| Power dissipation (ISO722xM, 150 Mbps) | 390 mW max |
ISO7221M Overview
Part: ISO7221C (ISO722x family, including ISO7220x/ISO7221x) — Texas Instruments
Type: Dual-Channel Digital Isolator
Description: Dual-channel digital isolator with 4000 VPK isolation (per VDE), 1/5/25/150 Mbps signaling-rate options, 2.8 V/3.3 V/5 V supply operation and 50 kV/μs typical transient immunity.
Operating Conditions:
- Supply voltage (VCC1, VCC2): 3–5.5 V for ISO722xA/B/M; 2.8–5.5 V for ISO722xC
- Operating temperature: -40 to +125 °C (ambient characterization); recommended junction temperature -40 to 150 °C
- Signaling rate: 0–1 Mbps (A), 0–5 Mbps (B), 0–25 Mbps (C), 0–150 Mbps (M)
- Output drive: ±4 mA (IOH = -4 mA, IOL = 4 mA)
Absolute Maximum Ratings:
- Max supply voltage (VCC1, VCC2): 6 V
- Voltage at IN, OUT: -0.5 V to VCC + 0.5 V
- Output current: ±15 mA
- Max junction temperature: 170 °C
- Storage temperature: -65 to 150 °C
- ESD: ±4000 V HBM, ±1000 V CDM
Key Specs:
- ICC1 quiescent (5 V supplies, no load): 1 mA typ / 2 mA max (ISO7220x); 8.5 mA typ / 17 mA max (ISO7221)
- ICC2 quiescent (5 V supplies, no load): 16 mA typ / 31 mA max (ISO7220x); 8.5 mA typ / 17 mA max (ISO7221x)
- ISO7221C/M ICC1 at 25 Mbps (12.5 MHz clock, no load): 12 mA typ / 22 mA max
- VOH: 4.6 V typ at IOH = -4 mA (min VCC - 0.8 V); VOL: 0.2 V typ / 0.4 V max at IOL = 4 mA
- Input hysteresis: 150 mV typ
- Input current IIH/IIL: ±10 μA max
- Barrier capacitance: 1 pF; isolation resistance >10^12 Ω (25 °C)
- VIORM 560 VPK; VIOTM 4000 VPK; UL 1577 VISO 2500 VRMS
- Clearance/creepage: 4 mm each; CTI ≥400 V
- Power dissipation (ISO722xM, 150 Mbps): 390 mW max
Features:
- 1, 5, 25 and 150 Mbps signaling rate options
- Channel-to-channel output skew 1 ns max; pulse-width distortion 1 ns max
- Jitter 1 ns typ at 150 Mbps
- 50 kV/μs typical transient immunity
- Operates from 2.8 V (C-grade), 3.3 V or 5 V supplies
- Inputs 5 V tolerant with 2.8 V or 3.3 V supply
- Failsafe output high if the input is unpowered or not driven
- 4 kV ESD protection
- Safety certifications: VDE 0884-17, UL 1577, IEC 61010-1, IEC 62368-1
- Typical 28-year life at rated voltage
Applications:
- Factory automation (Modbus, Profibus, DeviceNet data buses)
- Computer peripheral interface
- Servo control interface
- Data acquisition
Package:
- D (SOIC, 8-pin), 4.90 mm × 3.91 mm body
ISO7221M Features
- 1, 5, 25, and 150Mbps Signaling Rate Options
- -Low Channel-to-Channel Output Skew; 1ns Max
- -Low Pulse-Width Distortion (PWD); 1ns Max
- -Low Jitter Content; 1ns Typ at 150Mbps
- 50kV/μs Typical Transient Immunity
- Operates with 2.8V (C-Grade), 3.3V, or 5V Supplies
- 4kV ESD Protection
- High Electromagnetic Immunity
- -40°C to +125°C Operating Range
- Typical 28-Year Life at Rated Voltage (see Isolation Lifetime Projection)
- Safety Related Certifications
- -DIN EN IEC 60747-17 (VDE 0884-17) conformity per VDE
- -UL 1577 component recognition program
- -IEC 61010-1, IEC 62368-1 certifications
ISO7221M Applications
ISO7221M Pin Configuration
Figure 4-1. ISO7220x D Package 8-Pin SOIC Top View
Figure 4-2. ISO7221x D Package 8-Pin SOIC Top View
ISO7221M Electrical Characteristics
VCC1 and VCC2 at 5 V ± 10% (over recommended operating conditions unless otherwise noted.)
| PARAMETER | PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|---|
| I CC1 | V CC1 supply current | ISO7220x quiescent, V I = V CC or 0 V, no load | 1 | 2 | mA | |
| I CC1 | V CC1 supply current | ISO7221 quiescent, V I = V CC or 0 V, no load | 8.5 | 17 | mA | |
| I CC1 | V CC1 supply current | ISO7220A and ISO7220B 1 Mbps, 0.5-MHz input clock signal, no load | 2 | 3 | mA | |
| I CC1 | V CC1 supply current | ISO7221A, ISO7221B 1 Mbps, 0.5-MHz input clock signal, no load | 10 | 18 | mA | |
| I CC1 | V CC1 supply current | ISO7220C, ISO7220M 25 Mbps, 12.5-MHz input clock signal, no load | 4 | 9 | mA | |
| I CC1 | V CC1 supply current | ISO7221C and ISO7221M 25 Mbps, 12.5-MHz input clock signal, no load | 12 | 22 | mA | |
| I CC2 | V CC2 supply current | ISO7220x quiescent, V I = V CC or 0 V, no load | 16 | 31 | mA | |
| I CC2 | V CC2 supply current | ISO7221x quiescent, V I = V CC or 0 V, no load | 8.5 | 17 | mA | |
| I CC2 | V CC2 supply current | ISO7220A and ISO7220B 1 Mbps, 0.5-MHz input clock signal, no load | 17 | 32 | mA | |
| I CC2 | V CC2 supply current | ISO7221A, ISO7221B 1 Mbps, 0.5-MHz input clock signal, no load | 10 | 18 | mA | |
| I CC2 | V CC2 supply current | ISO7220C, ISO7220M 25 Mbps, 12.5-MHz input clock signal, no load | 20 | 34 | mA | |
| I CC2 | V CC2 supply current | ISO7221C and ISO7221M 25 Mbps, 12.5-MHz input clock signal, no load | 12 | 22 | mA | |
| V OH | High-level output voltage | I OH = -4 mA, See Figure 6-1 | V CC - 0.8 | 4.6 | V | |
| V OH | High-level output voltage | I OH = -20 μA, See Figure 6-1 | V CC - 0.1 | 5 | V | |
| V OL | Low-level output voltage | I OL = 4 mA, See Figure 6-1 | 0.2 | 0.4 | V | |
| V OL | Low-level output voltage | I OL = 20 μA, See Figure 6-1 | 0 | 0.1 | V | |
| V I(HYS) | Input voltage hysteresis | 150 | mV | |||
| I IH | High-level input current | IN from 0 V to V CC | 10 | μA | ||
| I IL | Low-level input current | IN from 0 V to V CC | -10 | μA | ||
| C I | Input capacitance to ground | IN at V CC , V I = 0.4 sin (2πft), f = 2MHz. | 1 | pF | ||
| CMTI | Common-mode transient immunity | V I = V CC or 0 V, See Figure 6-3 | 25 | 50 | kV/μs |
ISO7221M Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| V CC | Supply voltage (2) , V CC1 , V CC2 | -0.5 | 6 | V |
| V I | Voltage at IN, OUT | -0.5 | V CC + 0.5 (3) | V |
| I O | Output current | -15 | 15 | mA |
| T J | Maximum junction temperature | 170 | °C | |
| T stg | Storage temperature | -65 | 150 | °C |
ISO7221M Recommended Operating Conditions
| MIN | NOM | MAX | UNIT | |||
|---|---|---|---|---|---|---|
| V CC | Supply voltage (2) , V CC1 , V CC2 | ISO722xA, ISO722xB, ISO722xM | 3 | 5.5 | V | |
| V CC | ISO722xC | 2.8 | 5.5 | V | ||
| I OH | High-level output current | High-level output current | -4 | mA | ||
| I OL | Low-level output current | Low-level output current | 4 | mA | ||
| t ui | Input pulse width (1) | ISO722xA | 1 | μs | ||
| t ui | Input pulse width (1) | ISO722xB | 200 | ns | ||
| t ui | Input pulse width (1) | ISO722xC | 40 | ns | ||
| t ui | ISO722xM | 6.67 | ns | |||
| 1/t ui | Signaling rate (1) | ISO722xA | 0 | 1000 | kbps | |
| 1/t ui | ISO722xB | 0 | 5 | |||
| 1/t ui | ISO722xC | 0 | 25 | Mbps | ||
| 1/t ui | ISO722xM | 0 | 150 | Mbps | ||
| V IH | High-level input voltage | ISO722xA, ISO722xB, ISO722xC | 2 | 5.5 | V | |
| V IL | Low-level input voltage | ISO722xA, ISO722xB, ISO722xC | 0 | 0.8 | V | |
| V IH | High-level input voltage | ISO722xM | 0.7 x V CC | V CC | V | |
| V IL | Low-level input voltage | ISO722xM | 0 | 0.3 x V CC | V | |
| T J | Junction temperature | Junction temperature | -40 | 150 | °C | |
| H | External magnetic field-strength immunity per IEC 61000-4-8 and IEC 61000-4-9 certification | External magnetic field-strength immunity per IEC 61000-4-8 and IEC 61000-4-9 certification | 1000 | A/m |
ISO7221M Thermal Information
| THERMAL METRIC (1) - R θJA | THERMAL METRIC (1) - Junction-to-ambient thermal resistance | THERMAL METRIC (1) - Low-K Thermal Resistance (2) High-K Thermal Resistance | ISO7220x ISO7221x D (SOIC) 8 PINS - 212 122 | UNIT - °C/W |
|---|---|---|---|---|
| R θJC(top) | Junction-to-case (top) thermal resistance | 69.1 | °C/W | |
| R θJB | Junction-to-board thermal resistance | 47.7 | °C/W | |
| ψ JT | Junction-to-top characterization parameter | 15.2 | °C/W | |
| ψ JB | Junction-to-board characterization parameter | 47.2 | °C/W | |
| R θJC(bot) | Junction-to-case (bottom) thermal resistance | - | °C/W |
ISO7221M Typical Application
The ISO7220x and ISO7221x family devices use single-ended TTL or CMOS-logic switching technology. The supply voltage range is from 3 V (2.8 V for C-grade) to 5.5 V for both supplies, V CC1 and V CC2 . When designing with digital isolators, because of the single-ended design structure, digital isolators do not conform to any specific interface standard and are only intended for isolating single-ended CMOS or TTL digital signal lines. The isolator is typically placed between the data controller (that is, μC or UART), and a data converter or a line transceiver, regardless of the interface type or standard.
ISO7221M Package Information
| PART NUMBER | PACKAGE (1) | BODY SIZE (NOM) | PACKAGE SIZE (2) |
|---|---|---|---|
| ISO7220x ISO7221x | D (SOIC, 8) | 4.90mm × 3.91mm | 4.9mm × 6mm |
- (1) For all available packages, see the orderable addendum at the end of the data sheet.
- (2) The package size (length × width) is a nominal value and includes pins, where applicable.
VCCI and GNDI are supply and ground connections
respectively for the input channels.
VCCO and GNDO are supply and ground connections respectively for the output channels.
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All Integrated Circuits datasheetsAll Texas Instruments datasheets (2,442)
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