TCA9548AMRGERG4
The TCA9548AMRGERG4 is an electronic component from Texas Instruments. View the full TCA9548AMRGERG4 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
Manufacturer
Texas Instruments
Category
Multiplexer Switch ICs
Key Specifications
| Parameter | Value |
|---|---|
| Packaging | Reel |
| Standard Pack Qty | 3000 |
Overview
Part: TCA9548A from Texas Instruments
Type: 8-Channel I2C Switch with Reset
Description: The TCA9548A is an 8-channel bidirectional translating I2C switch with an active-low reset input, supporting voltage-level translation between 1.8V, 2.5V, 3.3V, and 5V buses, and operating from 1.65V to 5.5V with up to 400kHz clock frequency.
Operating Conditions:
- Supply voltage: 1.65 V to 5.5 V
- Operating temperature: -40 to +125 °C (for 1.65 V ≤ VCC ≤ 3.6 V)
- I2C clock frequency: 0 to 400 kHz
Absolute Maximum Ratings:
- Max supply voltage: 7 V
- Max output current: -25 mA
- Max storage temperature: 150 °C
- Max junction temperature: 130 °C (VCC ≤ 3.6 V), 90 °C (VCC ≤ 5.5 V)
Key Specs:
- Switch-on resistance (RON): 10 Ω (Typ, VCC = 4.5 V to 5.5 V, IO = 15 mA)
- Switch-on resistance (RON): 25 Ω (Typ, VCC = 1.65 V to 1.95 V, IO = 10 mA)
- Output current (IOL): 6 mA (Min, VCC = 1.65 V to 5.5 V, VOL = 0.6 V)
- Supply current (ICC) in operating mode: 30 μA (Max, VCC = 5.5 V, fSCL = 400 kHz)
- Supply current (ICC) in standby mode: 2 μA (Max, VCC = 5.5 V, -40 °C ≤ TA ≤ 85 °C)
- I2C bus capacitive load (Cb): 400 pF (Max)
- I2C clock high time (tSCH): 0.6 μs (Min, Fast Mode)
- I2C clock low time (tSCL): 1.3 μs (Min, Fast Mode)
Features:
- 1-to-8 Bidirectional translating switches
- I2C Bus and SMBus compatible
- Active-low reset input
- Three address pins, allowing up to eight TCA9548A devices on the I2C bus
- Channel selection through an I2C Bus, in any combination
- Allows voltage-level translation between 1.8V, 2.5V, 3.3V, and 5V buses
- 5-V Tolerant inputs
- 0 to 400kHz Clock frequency
Applications:
- Servers
- Routers (telecom switching equipment)
- Factory Automation
- Products with I2C target address conflicts (such as multiple, identical temperature sensors)
Package:
- PW (TSSOP, 24)
- RGE (VQFN, 24)
- DGS (VSSOP, 24)
Features
- 1-to-8 Bidirectional translating switches
- I 2 C Bus and SMBus compatible
- Active-low reset input
- Three address pins, allowing up to eight TCA9548A devices on the I 2 C bus
- Channel selection through an I 2 C Bus, in any combination
- Power up with all switch channels deselected
- Low RON switches
- Allows voltage-level translation between 1.8V, 2.5V, 3.3V, and 5V buses
- No glitch on power up
- Supports hot insertion
- Low standby current
- Operating power-supply voltage range of 1.65V to 5.5V
- 5-V Tolerant inputs
- 0 to 400kHz Clock frequency
- Latch-up performance exceeds 100mA Per JESD 78, class II
- ESD Protection exceeds JESD 22
- -±2000V Human-body model (A114-A)
- -200V Machine model (A115-A)
- -±1000V Charged-device model (C101)
Applications
- Servers
- Routers (telecom switching equipment)
- Factory Automation
- Products with I 2 C target address conflicts (such as multiple, identical temperature sensors)
SCPS207H - MAY 2012 - REVISED SEPTEMBER 2024
Pin Configuration
Not to scale
Figure 4-1. PW, DGS Package, 24-Pin TSSOP, VSSOP (Top View)
Table 4-1. Pin Functions
| PIN | PIN | PIN | TYPE |
|---|---|---|---|
| NAME | TSSOP, VSSOP (PW, DGS) | VQFN (RGE) | TYPE |
| A0 | 1 | 22 | I |
| A1 | 2 | 23 | I |
| A2 | 21 | 18 | I |
| GND | 12 | 9 | - |
| RESET | 3 | 24 | I |
| SD0 | 4 | 1 | I/O |
| SC0 | 5 | 2 | I/O |
| SD1 | 6 | 3 | I/O |
| SC1 | 7 | 4 | I/O |
| SD2 | 8 | 5 | I/O |
| SC2 | 9 | 6 | I/O |
| SD3 | 10 | 7 | I/O |
| SC3 | 11 | 8 | I/O |
| SD4 | 13 | 10 | I/O |
| SC4 | 14 | 11 | I/O |
| SD5 | 15 | 12 | I/O |
| SC5 | 16 | 13 | I/O |
| SD6 | 17 | 14 | I/O |
| SC6 | 18 | 15 | I/O |
| SD7 | 19 | 16 | I/O |
| SC7 | 20 | 17 | I/O |
| SCL | 22 | 19 | I/O |
| SDA | 23 | 20 | I/O |
| VCC | 24 | 21 | Power |
Table 4-1. Pin Functions
Figure 4-2. RGE Package, 24-Pin VQFN (Top View)
Electrical Characteristics
VCC = 1.65 V to 5.5 V, over recommended operating free-air temperature ranges supported by Recommended Operating Conditions (unless otherwise noted) (1)
| PARAMETER | TEST CONDITIONS | V CC | MIN | MAX | UNIT | |
|---|---|---|---|---|---|---|
| V PORR | Power-on reset voltage, V CC rising | No load, V I = V CC or GND (3) | 1.5 | V | ||
| V PORF | Power-on reset voltage, V CC falling (4) | No load, V I = V CC or GND (3) | 5 V 4.5 V to 5.5 V 3.3 V | 0.8 2.6 | 4.5 | V |
| V | 3 V to 3.6 V | 1.6 | 2.8 | V | ||
| o(sw) | Switch output voltage | V i(sw) = V CC , I SWout = -100 μA | 2.5 V 2.3 V to 2.7 V 1.8 V 1.65 V to 1.95 V | 1.1 0.6 | 2 1.25 | |
| I OL | V OL = 0.4 V | 3 | mA | |||
| SDA | V OL = 0.6 V | 1.65 V to 5.5 V | 6 | |||
| I | SCL, SDA | SCL, SDA | -1 | 1 | ||
| SC7-SC0, SD7-SD0 | SC7-SC0, SD7-SD0 | -1 | 1 | |||
| I | A2-A0 RESET f SCL Operating mode | A2-A0 RESET (3) V I = V CC or GND , I O = 0 (3) | 1.65 V to 5.5 V 5.5 V 3.6 V 2.7 V 1.65 V 5.5 V 3.6 V | -1 -1 | 1 1 80 35 20 10 30 15 | μA |
| f SCL | V I = V CC or GND , I O = 0 | 2.7 V 1.65 V 5.5 V | 8 4 2 | μA | ||
| I CC | Low Standby mode | V I = GND (3) , I O = 0, -40 °C ≤ TA ≤ 85 °C | 3.6 V 2.7 V 1.65 V 5.5 V 3.6 V | 2 1 1 2 2 | ||
| High | V I = V CC , I O = 0, -40 °C ≤ TA ≤ 85 °C | 2.7 V 1.65 V 3.6 V | 1 1 2 | μA | ||
| Low | Vi = Vcc or GND, Io = 0, 85 °C < TA ≤ 125 °C | 2.7 V 1.65 V | 1.5 1 | μA μA | ||
| ΔI CC | Supply-current change SCL, | SCL or SDA input at 0.6 V, Other inputs at V CC or GND (3) SCL or SDA input at V CC - 0.6 V, Other inputs at V CC or GND (3) | 1.65 V to 5.5 V | 20 20 | μA | |
| A2-A0 | V I = V CC or GND (3) | 5 5 | pF | |||
| C i | RESET SCL | V I = V CC or GND (3) , Switch OFF | 1.65 V to 5.5 V | 28 | ||
| C io(off) (5) | SDA SC7-SC0, SD7-SD0 | V I = V CC or GND (3) , Switch OFF | 1.65 V to 5.5 V | 28 7.5 | pF |
VCC = 1.65 V to 5.5 V, over recommended operating free-air temperature ranges supported by Recommended Operating Conditions (unless otherwise noted) (1)
| PARAMETER | PARAMETER | TEST CONDITIONS | V CC | MIN | TYP (2) | MAX | UNIT |
|---|---|---|---|---|---|---|---|
| R ON | Switch-on resistance | V O = 0.4 V, I O = 15 mA | 4.5 V to 5.5 V | 4 | 10 | 20 | Ω |
| R ON | Switch-on resistance | V O = 0.4 V, I O = 15 mA | 3 V to 3.6 V | 5 | 12 | 30 | Ω |
| R ON | Switch-on resistance | V O = 0.4 V, I O = 10 mA | 2.3 V to 2.7 V | 7 | 15 | 45 | Ω |
| R ON | Switch-on resistance | V O = 0.4 V, I O = 10 mA | 1.65 V to 1.95 V | 10 | 25 | 70 | Ω |
- (1) For operation between specified voltage ranges, refer to the worst-case parameter in both applicable ranges
- (2) All typical values are at nominal supply voltage (1.8-, 2.5-,3.3-, or 5-V V CC), T A = 25°C
- (3) RESET = VCC (held high) when all other input voltages, VI = GND.
- (4) The power-on reset circuit resets the I 2 C bus logic with V CC < VPORF
- (5) Cio(ON) depends on internal capacitance and external capacitance added to the SCn lines when channels(s) are ON.
Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
| MIN | MAX | UNIT | |||
|---|---|---|---|---|---|
| V CC | Supply voltage | Supply voltage | -0.5 | 7 | V |
| V I | Input voltage (2) | Input voltage (2) | -0.5 | 7 | V |
| I I | Input current | Input current | -20 | 20 | mA |
| I O | Output current | Output current | -25 | mA | |
| I CC | Supply current | Supply current | -100 | 100 | mA |
| T stg | Storage temperature | Storage temperature | -65 | 150 | °C |
| T J | V CC ≤ 3.6 V | 130 | °C | ||
| T J | V CC ≤ 5.5 V | 90 | °C |
Recommended Operating Conditions
| MIN | MAX | UNIT | |||
|---|---|---|---|---|---|
| V CC | Supply voltage | -40 °C ≤ T A ≤ 85 °C | 1.65 | 5.5 | V |
| V CC | 85 °C < T A ≤ 125 °C | 1.65 | 3.6 | V | |
| V IH | High-level input voltage | SCL, SDA | 0.7 × V CC | 6 | V |
| V IH | A2-A0, RESET | 0.7 × V CC | V CC + 0.5 | V | |
| V IL | Low-level input voltage | SCL, SDA | -0.5 | 0.3 × V CC | V |
| V IL | A2-A0, RESET | -0.5 | 0.3 × V CC | V | |
| T A | Operating free-air temperature | 3.6 V < V CC ≤ 5.5 V | -40 | 85 | °C |
| T A | 1.65 V ≤ V CC ≤ 3.6 V | -40 | 125 | °C |
Thermal Information
| TCA9548A | TCA9548A | TCA9548A | ||
|---|---|---|---|---|
| THERMAL METRIC (1) | THERMAL METRIC (1) | PW (TSSOP) | RGE (VQFN) | DGS (VSSOP) |
| 24 PINS | 24 PINS | 24 PINS | ||
| R θJA | Junction-to-ambient thermal resistance | 108.8 | 57.2 | 86.1 |
| R θJC(top) | Junction-to-case (top) thermal resistance | 54.1 | 62.5 | 34.3 |
| R θJB | Junction-to-board thermal resistance | 62.7 | 34.4 | 47.3 |
| ψ JT | Junction-to-top characterization parameter | 10.9 | 3.8 | 1.5 |
| ψ JB | Junction-to-board characterization parameter | 62.3 | 34.4 | 47.0 |
| R θJC(bot) | Junction-to-case (bottom) thermal resistance | N/A | 15.5 | N/A |
Typical Application
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