DATA SHEET
通过汽车认证的 LSF0204-Q1 4 位自动双向多电压电平转换器
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1 特性
- 符合面向汽车应用的 AEC-Q100 标准
- 温度等级 1：–40°C ≤ TA ≤ 125°C
- 器件 HBM ESD 分类等级 2
- CDM ESD 分类等级 C6
- 可在无方向引脚的情况下提供自动双向电压转换
- 支持开漏或推挽应用，如 I2C、I2S、SPI、UART、JTAG、MDIO、SDIO 和 GPIO
- 在电容负载不超过 30pF 的情况下，支持最高 100MHz 的上行转换和大于 100MHz 的下行转换，
在 50pF 电容负载下支持最高 40MHz 的上行/下行转换 - 支持 Ioff 局部断电模式（请参阅 Section 7.3）
- 可实现以下电压之间的双向电压电平转换
- 0.95V ↔ 1.8、2.5、3.3、5.5V
- 1.2V ↔ 1.8、2.5、3.3、5.5V
- 1.8V ↔ 2.5、3.3、5.5V
- 2.5V ↔ 3.3、5.5V
- 3.3V ↔ 5.5V
- I/O 端口可耐受 5V 电压
- 低 Ron 可实现更佳的信号完整性
- 采用直通引脚排列来简化 PCB 布线
- 闩锁性能超过 100mA，符合 JESD17 规范
2 应用
- I2S、JTAG、SPI、SDIO、UART、I2C、MDIO、PMBus、SMBus 和其他接口
- 信息娱乐系统音响主机
- 图形群集
- ADAS 融合
- ADAS 前置摄像头
- HEV 电池管理系统
3 说明
LSF0204-Q1 是一款通过汽车认证的四通道自动双向电压转换器，可在 0.8V 至 4.5V (Vref_A) 和 1.8V 至 5.5V (Vref_B) 电压范围内运行。该范围支持在 0.8 至 5V 之间进行双向电压转换，而无须使用方向引脚。
当 An 或 Bn 端口为低电平时，此开关处于接通状态，并且在 An 和 Bn 端口之间存在一个低电阻连接。此开关具有低导通电阻，可以在最短传播延迟和最小信号失真情况下建立连接。A 侧或 B 侧上的电压将低于 Vref_A，且可上拉至 Vref_A 到 5.5V 之间的任何电平
您可以使用上拉电阻器单独设置每个通道的电源电压 (VPUn)。例如，CH1 可用于上行转换模式 (1.2V ↔ 3.3V)，CH2 可用于下行转换模式 (2.5V ↔ 1.8V)。
当 EN 为高电平时，转换器开关打开，并且 An I/O 分别连接至 Bn I/O，从而实现端口间的双向数据流。当 EN 为低电平时，转换器开关关闭，端口之间呈高阻抗状态。EN 输入电路被设计成由 Vref_A 供电。EN 必须为低电平，从而确保上电或断电期间的高阻抗状态。
器件信息(1)
| 器件型号 | 封装 | 封装尺寸（标称值） |
|---|---|---|
| LSF0204QPWRQ1 | TSSOP (14) | 5.00mm x 4.40mm |
(1) 如需了解所有可用封装，请参阅数据表末尾的可订购产品附录。
简化版原理图5 Pin Configuration and Functions
Figure 5-1 PW Package14-Pin TSSOP
Top View
Table 5-1 Pin Functions 2
| PIN | I/O | DESCRIPTION | |
|---|---|---|---|
| NAME | NO. | ||
| VREF_A | 1 | — | Reference supply voltage; see Section 8 section |
| A1 | 2 | I/O | Input/output 1. |
| A2 | 3 | I/O | Input/output 2. |
| A3 | 4 | I/O | Input/output 3. |
| A4 | 5 | I/O | Input/output 4. |
| NC | 6 | — | No connection. Not internally connected. |
| GND | 7 | — | Ground |
| EN | 8 | I | Translation enable input, EN is active-high |
| NC | 9 | — | No connection. Not internally connected. |
| B4 | 10 | I/O | Input/output 4. |
| B3 | 11 | I/O | Input/output 3. |
| B2 | 12 | I/O | Input/output 2. |
| B1 | 13 | I/O | Input/output 1. |
| VREF_B | 14 | — | Reference supply voltage; see Section 8 section |
6 Specifications
6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
| MIN | MAX | UNIT | |||
|---|---|---|---|---|---|
| Input voltage, VI (2) | –0.5 | 7 | V | ||
| Input and output voltage, VI/O (2) | –0.5 | 7 | V | ||
| Continuous channel current | 128 | mA | |||
| Input clamp current, IIK | VI < 0 | –50 | mA | ||
| Junction temperature, TJ | 150 | °C | |||
| Storage temperature, Tstg | –65 | 150 | °C | ||
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) The input and input/output negative-voltage ratings may be exceeded if the input and input/output clamp-current ratings are observed.
6.2 ESD Ratings
| VALUE | UNIT | |||
|---|---|---|---|---|
| V(ESD) | Electrostatic discharge | Human-body model (HBM), per AEC Q100-002(1) | ±2000 | V |
| Charged-device model (CDM), per AEC Q100-001 | ±1000 | |||
(1) AEC Q100-002 indicates that HBM stressing shall be in accordance with the ANSI/ESDA/JEDEC JS-001 specification.
6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| VI/O | Input/output voltage | 0 | 5.5 | V |
| Vref_A/B/EN | Reference voltage | 0 | 5.5 | V |
| IPASS | Pass transistor current | 64 | mA | |
| TA | Operating free-air temperature | –40 | 125 | °C |
6.4 Thermal Information
| THERMAL METRIC(1) | LSF0204-Q1 | UNIT | |
|---|---|---|---|
| PW (TSSOP) | |||
| 14 PINS | |||
| RθJA | Junction-to-ambient thermal resistance | 157.9 | °C |
| RθJC(top) | Junction-to-case (top) thermal resistance | 82.3 | °C |
| RθJB | Junction-to-board thermal resistance | 100.0 | °C |
| ψJT | Junction-to-top characterization parameter | 22.9 | °C |
| ψJB | Junction-to-board characterization parameter | 99.0 | °C |
| RθJC(bot) | Junction-to-case (bottom) thermal resistance | N/A | °C |
(1) For more information about traditional and new thermal metrics, refer to the Semiconductor and IC Package Thermal Metrics application report.
6.5 Electrical Characteristics
over recommended operating free-air temperature range (unless otherwise noted)
| PARAMETER | TEST CONDITIONS | MIN | TYP(1) | MAX | UNIT | |||
|---|---|---|---|---|---|---|---|---|
| VIK | Input clamp voltage | II = -18 mA, VEN = 0 | –1.2 | V | ||||
| IIH | I/O input high leakage | VI = 5 V, VEN = 0 | 5.0 | µA | ||||
| ICCBA | Leakage from Vref_B to Vref_A | Vref_B = 3.3 V, Vref_A = 1.8 V, VEN = Vref_A IO = 0, VI = 3.3 V or GND | 3.5 | µA | ||||
| ICCA + ICCB(3) | Total Current through GND | Vref_B = 3.3 V, Vref_A = 1.8 V, VEN = Vref_A IO = 0, VI = 3.3 V or GND | 0.2 | µA | ||||
| IIN | Control pin current | Vref_B = 5.5 V, Vref_A = 4.5 V, VEN = 0 to Vref_A IO = 0 | ±1 | µA | ||||
| Ioff | Power Off Leakage Current | Vref_B = Vref_A = 0 V, VEN = GND IO = 0, VI = 5 V or GND | ±1 | µA | ||||
| CI(ref_A/B/EN) | Input capacitance | VI = 3 V or 0 | 7 | pF | ||||
| Cio(off) | I/O pin off-state capacitance | VO = 3 V or 0, VEN = 0 | 5.0 | 6.0 | pF | |||
| Cio(on) | I/O pin on-state capacitance | VO = 3 V or 0, VEN = Vref_A | 10.5 | 13 | pF | |||
| VIH (EN pin) | High-level input voltage | Vref_A = 1.5 V to 4.5 V | 0.7×Vref_A | V | ||||
| VIL (EN pin) | Low-level input voltage | Vref_A = 1.5 V to 4.5 V | 0.3×Vref_A | V | ||||
| VIH (EN pin) | High-level input voltage | Vref_A= 1.0 V to 1.5 V | 0.8×Vref_A | V | ||||
| VIL (EN pin) | Low-level input voltage | Vref_A = 1.0 V to 1.5 V | 0.3×Vref_A | V | ||||
| ∆t/∆v (EN pin) | Input transition rise or fall rate for EN pin | 10 | ns/V | |||||
| ron (2) | On-state resistance | VI = 0, IO = 64 mA | Vref_A = VEN = 3.3 V; Vref_B = 5 V | 3 | Ω | |||
| Vref_A = VEN = 1.8 V; Vref_B = 5 V | 4 | |||||||
| VI = 0, IO = 32 mA | Vref_A = VEN = 1.0 V; Vref_B = 5 V | 9 | Ω | |||||
| Vref_A = VEN = 1.8 V; Vref_B = 5 V | 4 | |||||||
| VI = 0, IO = 32 mA , Vref_A = VEN = 2.5 V; Vref_B = 5 V | 10 | Ω | ||||||
| VI = 1.8 V, IO = 15 mA, Vref_A = VEN = 3.3 V; Vref_B = 5 V | 5 | Ω | ||||||
| VI = 1.0 V, IO = 10 mA, Vref_A = VEN = 1.8 V; Vref_B = 3.3 V | 8 | Ω | ||||||
| VI = 0 V, IO = 10 mA, Vref_A = VEN = 1.0 V; Vref_B = 3.3 V | 6 | Ω | ||||||
| VI = 0 V, IO = 10 mA, Vref_A = VEN = 1.0 V; Vref_B = 1.8 V | 6 | Ω | ||||||
(1) All typical values are at TA = 25°C.
(2) Measured by the voltage drop between the A and B terminals at the indicated current through the switch. On-state resistance is determined by the lowest voltage of the two (A or B) terminals.
(3) The actual supply current for LSF0204 is ICCA + ICCB; the leakage from Vref_B to Vref_A can be measured on Vref_A and Vref_B pin
6.6 Switching Characteristics: AC Performance (Translating Down, 3.3 V to 1.8 V)
over recommended operating free-air temperature range, Vrev-A = 1.8 V, Vrev-B = 3.3 V, VEN = 1.8 V, Vpu_1 = 3.3 V,
Vpu_2 = 1.8 V, RL = NA, VIH = 3.3 V, VIL = 0 VM = 1.15 V (unless otherwise noted)
Vpu_2 = 1.8 V, RL = NA, VIH = 3.3 V, VIL = 0 VM = 1.15 V (unless otherwise noted)
| PARAMETER | TEST CONDITION | MIN | TYP | MAX | UNIT | ||
|---|---|---|---|---|---|---|---|
| tPLH | Propagation delay time (low-to-high output) | (Input) A or B-to-B or A (Output) | CL = 50 pF | 0.7 | 5.49 | ns | |
| CL = 30 pF | 0.5 | 5.29 | |||||
| CL = 15 pF | 0.3 | 5.19 | |||||
| tPHL | Propagation delay time (high-to-low output) | (Input) A or B-to-B or A (Output) | CL = 50 pF | 0.9 | 4.9 | ns | |
| CL = 30 pF | 0.7 | 4.7 | |||||
| CL = 15 pF | 0.5 | 4.5 | |||||
| tPLZ | Disable time (from low level) | (Input) A or B-to-B or A (Output) | CL = 50 pF | 13 | 18 | ns | |
| CL = 30 pF | 12 | 16.5 | |||||
| CL = 15 pF | 11 | 15 | |||||
| tPZL | Disable time | (Input) A or B-to-B or A (Output) | CL = 50 pF | 33 | 45 | ns | |
| CL = 30 pF | 30 | 40 | |||||
| CL = 15 pF | 23 | 37 | |||||
| fMAX | Maximum time | (Input) A or B-to-B or A (Output) | CL = 50 pF | 50 | MHz | ||
| CL = 30 pF | 100 | ||||||
| CL = 15 pF | 100 | ||||||
6.7 Switching Characteristics: AC Performance (Translating Down, 3.3 V to 1.2 V)
over recommended operating free-air temperature range Vrev-A = 1.2 V, Vrev-B = 3.3 V, VEN = 1.2 V, Vpu_1 = 3.3 V,
Vpu_2 = 1.2 V, RL = NA, VIH = 3.3V, VIL = 0 VM = 0.85 V (unless otherwise noted)
Vpu_2 = 1.2 V, RL = NA, VIH = 3.3V, VIL = 0 VM = 0.85 V (unless otherwise noted)
| PARAMETER | TEST CONDITION | MIN | TYP | MAX | UNIT | ||
|---|---|---|---|---|---|---|---|
| tPLH | Propagation delay time (low-to-high output) | (Input) A or B-to-B or A (Output) | CL = 50 pF | 0.8 | 4.1 | ns | |
| CL = 30 pF | 0.5 | 3.9 | |||||
| CL = 15 pF | 0.3 | 3.8 | |||||
| tPHL | Propagation delay time (high-to-low output) | (Input) A or B-to-B or A (Output) | CL = 50 pF | 0.9 | 4.7 | ns | |
| CL = 30 pF | 0.7 | 4.5 | |||||
| CL = 15 pF | 0.6 | 4.3 | |||||
| fMAX | Maximum time | (Input) A or B-to-B or A (Output) | CL = 50 pF | 50 | MHz | ||
| CL = 30 pF | 100 | ||||||
| CL = 15 pF | 100 | ||||||
6.8 Switching Characteristics: AC Performance (Translating Up, 1.8 V to 3.3 V)
over recommended operating free-air temperature range Vrev-A = 1.8 V, Vrev-B = 3.3 V, VEN = 1.8 V, Vpu_1 = 3.3 V,
Vpu_2 = 1.8V, RL = 500 Ω, VIH = 1.8V,VIL = 0 VM = 0.9V (unless otherwise noted)
Vpu_2 = 1.8V, RL = 500 Ω, VIH = 1.8V,VIL = 0 VM = 0.9V (unless otherwise noted)
| PARAMETER | TEST CONDITION | MIN | TYP | MAX | UNIT | ||
|---|---|---|---|---|---|---|---|
| tPLH | Propagation delay time (low-to-high output) | (Input) A or B-to-B or A (Output) | CL = 50 pF | 0.6 | 5.7 | ns | |
| CL = 30 pF | 0.4 | 5.3 | |||||
| CL = 15 pF | 0.2 | 5.13 | |||||
| tPHL | Propagation delay time (high-to-low output) | (Input) A or B-to-B or A (Output) | CL = 50 pF | 1.3 | 6.7 | ns | |
| CL = 30 pF | 1 | 6.4 | |||||
| CL = 15 pF | 0.7 | 5.3 | |||||
| tPLZ | Disable time (from low level) | (Input) A or B-to-B or A (Output) | CL = 50 pF | 13 | 18 | ns | |
| CL = 30 pF | 12 | 16.5 | |||||
| CL = 15 pF | 11 | 15 | |||||
| tPZL | Disable time | (Input) A or B-to-B or A (Output) | CL = 50 pF | 33 | 45 | ns | |
| CL = 30 pF | 30 | 40 | |||||
| CL = 15 pF | 23 | 37 | |||||
| fMAX | Maximum time | (Input) A or B-to-B or A (Output) | CL = 50 pF | 50 | MHz | ||
| CL = 30 pF | 100 | ||||||
| CL = 15 pF | 100 | ||||||
6.9 Switching Characteristics: AC Performance (Translating Up, 1.2 V to 1.8 V)
over recommended operating free-air temperature range, Vrev-A = 1.2 V, Vrev-B = 1.8 V, VEN = 1.2 V, Vpu_1 = 1.8 V,
Vpu_2 = 1.2 V, RL = 500 Ω, VIH = 1.2V, VIL = 0 VM = 0.6 V (unless otherwise noted)
Vpu_2 = 1.2 V, RL = 500 Ω, VIH = 1.2V, VIL = 0 VM = 0.6 V (unless otherwise noted)
| PARAMETER | TEST CONDITION | MIN | TYP | MAX | UNIT | ||
|---|---|---|---|---|---|---|---|
| tPLH | Propagation delay time (low-to-high output) | (Input) A or B-to-B or A (Output) | CL = 50 pF | 0.65 | 7.25 | ns | |
| CL = 30 pF | 0.4 | 7.05 | |||||
| CL = 15 pF | 0.2 | 6.85 | |||||
| tPHL | Propagation delay time (high-to-low output) | (Input) A or B-to-B or A (Output) | CL = 50 pF | 1.6 | 7.03 | ns | |
| CL = 30 pF | 1.3 | 6.5 | |||||
| CL = 15 pF | 1 | 5.4 | |||||
| fMAX | Maximum time | (Input) A or B-to-B or A (Output) | CL = 50 pF | 50 | MHz | ||
| CL = 30 pF | 100 | ||||||
| CL = 15 pF | 100 | ||||||
6.10 Typical Characteristics
Figure 6-1 Signal Integrity (1.8 V to 3.3 V Translation Up at 50 MHz)7 Detailed Description
7.1 Overview
The LSF0204-Q1 may be used in level translation applications for interfacing devices or systems operating at different interface voltages. The LSF0204-Q1 is ideal for use in applications where an open-drain driver is connected to the data I/Os. LSF0204-Q1 can achieve 100 MHz data rate with the appropriate pull-up resistors and layout design. The LSF0204-Q1 can also be used in applications where a push-pull driver is connected to the data I/Os.
7.2 Functional Block Diagram
7.3 Feature Description
7.3.1 Auto-Bidirectional Voltage Translation Without DIR Pin Terminal
The LSF0204-Q1 device is an auto bidirectional voltage level translator that operates from 0.95 V to 4.5 V on Vref_A and 1.8 V to 5.5 V on Vref_B. This allows bidirectional voltage translation between 0.95 V and 5.5 V without the need for a direction pin in open-drain or push-pull applications.
7.3.2 Support Multiple High Speed Translation Interfaces
The LSF0204-Q1 device is able to perform voltage translation for open-drain interfaces such as I2C, MDIO, SMBUS, and PMBUS or push-pull interfaces such as I2S, SPI, UART, SDIO, and GPIO. The LSF0204-Q1 device supports level translation applications with transmission speeds greater than 100 MHz using a 200-Ω pullup resistor with a 15-pF capacitive load. See the Down Translation with the LSF family and Up Translation with the LSF family videos.
