LSF0204x 适用于漏极开路和推挽应用的 4 位双向多电压电平转换器
- ZHCSD68H July 2014 – April 2021 LSF0204 , LSF0204D
  
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LSF0204x 适用于漏极开路和推挽应用的 4 位双向多电压电平转换器

本资源的原文使用英文撰写。为方便起见，TI 提供了译文；由于翻译过程中可能使用了自动化工具，TI 不保证译文的准确性。为确认准确性，请务必访问 ti.com 参考最新的英文版本（控制文档）。

1 特性

无需方向端子即可提供双向电压转换
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 I_off、局部断电模式（参阅特性说明）
可实现以下电压之间的双向电压电平转换
- 0.8V ↔ 1.8/2.5/3.3/5V
- 1.2V ↔ 1.8/2.5/3.3/5V
- 1.8V ↔ 2.5/3.3/5V
- 2.5V ↔ 3.3/5V
- 3.3V ↔ 5V
低待机电流
支持 TTL 的 5V 耐受 I/O 端口
低 R_on 可实现较少的信号失真
实现 EN = 低电平的高阻抗 I/O 端子
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
–40°C 至 125°C 工作温度范围
ESD 性能测试符合 JESD 22 标准
- 2000V 人体放电模型（A114-B，II 类）
- 200V 机器放电模型 (A115-A)
- 1000V 充电器件模型 (C101)

2 应用

GPIO、MDIO、PMBus、SMBus、SDIO、UART、I²C 和电信基础设施中的其他接口
工业类
汽车类
个人计算

3 说明

LSF 系列包含双向电压电平转换器，该转换器可在 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 0.8V 和 5.0V 之间进行双向电压转换，无需在漏极开路或推挽应用中使用方向端子。对于采用 15pF 电容器和 165Ω 上拉电阻器的漏极开路系统，LSF 系列支持传输速度大于 100MHz 的电平转换应用。

当 An 或 Bn 端口为低电平时，此开关处于接通状态，而且 An 和 Bn 端口之间存在低电阻连接。开关的低 R_on 可实现具有超小传播延迟和信号失真的连接。A 端或 B 端的电压将限制为 Vref_A，且可上拉至 Vref_A 到 5V 之间的任何电压水平。利用此功能，可在无需方向控制的情况下，在用户选择的较高和较低电压之间实现无缝转换。

器件信息⁽¹⁾

器件型号	封装	封装尺寸（标称值）
LSF0204x	TSSOP (14)	5.00mm × 4.40mm
	UQFN (12)	2.00mm × 1.70mm
	VQFN (14)	3.50mm × 3.50mm
	DSBGA (12)	1.90mm × 1.40mm

(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。

简化原理图

4 Revision History

Changes from Revision G (November 2019) to Revision H (April 2021)

更新了整个文档的表、图和交叉参考的编号格式Go
Updated the Bidirectional Translation section to include inclusive terminologyGo

Changes from Revision F (January 2019) to Revision G (November 2019)

Changed V_{ref_A/B/EN} max voltage to 5.5 V in the Recommended Operating Conditions tableGo

Changes from Revision E (December 2018) to Revision F (January 2019)

Changed location of YZP-package indicator dot to A3 position. Go
Added YZP package to Thermal Information tableGo

Changes from Revision D (December 2015) to Revision E (December 2018)

Changed location of YZP-package A1-pin indicator dot. View is looking through the device, as in an X-ray. Go

Changes from Revision C (August 2015) to Revision D (December 2015)

Added Type Column to Pin Functions tableGo
Added Junction Temperatures to Thermal Information tableGo

Changes from Revision B (April 2015) to Revision C (August 2015)

删除了“特性”中的“低于最大传播延迟 1.5ns”项目符号Go
更新了“特性”中的“支持 100MHz 以上的高速转换”项目符号Go

Changes from Revision A (December 2014) to Revision B (April 2015)

向器件添加了 YZP 封装Go

Changes from Revision * (November 2014) to Revision A (December 2014)

从首页“产品预发布”更改为完整数据表Go
将 Section 3 中的文本从“传输速度大于 100Mbps”更改为“传输速度大于 100MHz”Go

5 说明（续）

每个通道的电源电压 (V_pu#) 可以用上拉电阻器单独进行设置。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。

器件比较表

器件型号	EN	An	Bn	说明
LSF0204D	H	将所有数据引脚置于三态模式（高阻态）	将所有数据引脚置于三态模式（高阻态）	三态输出模式启用（低电平有效；以 Vref_A 为基准）
LSF0204D	L	输入或输出	输入或输出	三态输出模式启用（低电平有效；以 Vref_A 为基准）
LSF0204	H	输入或输出	输入或输出	三态输出模式启用（高电平有效，以 Vref_A 为基准）
LSF0204	L	将所有数据引脚置于三态模式（高阻态）	将所有数据引脚置于三态模式（高阻态）	三态输出模式启用（高电平有效，以 Vref_A 为基准）

6 Pin Configuration and Functions

Figure 6-1 PW Package,
14-Pin TSSOP
(Top View)

Figure 6-3 RUT Package,
12-Pin UQFN
(Transparent Top View)

Figure 6-2 RGY Package,
14-Pin VQFN
(Transparent Top View)

Figure 6-4 YZP Package,
12-Pin DSBGA
(Transparent Top View)

Table 6-1 Pin Functions

PIN				TYPE⁽¹⁾	DESCRIPTION
NAME	NO.
NAME	PW, RGY	RUT	YZP
V_{ref_A}	1	1	B2	—	Reference supply voltage; see Application and Implementation section
A1	2	2	A3	I/O	Input/output 1.
A2	3	3	B3	I/O	Input/output 2.
A3	4	4	C3	I/O	Input/output 3.
A4	5	5	D3	I/O	Input/output 4.
NC	6	–	—	—	No connection. Not internally connected.
GND	7	6	D2	—	Ground
EN	8	12	C2	I	Switch enable input; LSF0204: EN is high-active; LSF0204D: EN is low-active
NC	9	–	—	—	No connection. Not internally connected.
B4	10	7	D1	I/O	Input/output 4.
B3	11	8	C1	I/O	Input/output 3.
B2	12	9	B1	I/O	Input/output 2.
B1	13	10	A1	I/O	Input/output 1.
V_{ref_B}	14	11	A2	—	Reference supply voltage; see Application and Implementation section

(1) I = input, O = output

7 Specifications

7.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted) ⁽¹⁾

			MIN	MAX	UNIT
V_I	Input voltage ⁽²⁾		–0.5	7	V
V_I/O	Input/output voltage ⁽²⁾		–0.5	7	V
	Continuous channel current			128	mA
I_IK	Input clamp current	VI < 0		–50	mA
T_J	Junction temperature			150	°C
T_stg	Storage temperature		–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.

7.2 ESD Ratings

			VALUE	UNIT
V_(ESD)	Electrostatic discharge	Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001⁽¹⁾	±2000	V
V_(ESD)	Electrostatic discharge	Charged-device model (CDM), per JEDEC specification JESD22-C101⁽²⁾	±1000	V

(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. Manufacturing with less than 500-V HBM is possible with the necessary precautions.

(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. Manufacturing with less than 250-V CDM is possible with the necessary precautions.

7.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

		MIN	MAX	UNIT
V_I/O	Input/output voltage	0	5.5	V
V_{ref_A/B/EN}	Reference voltage	0	5.5	V
I_PASS	Pass transistor current		64	mA
T_A	Operating free-air temperature	–40	125	°C

7.4 Thermal Information

THERMAL METRIC⁽¹⁾		LSF0204				UNIT
		RGY (VQFN)	RUT (UQFN)	PW (TSSOP)	YZP (DSBGA)
		14 PINS	12 PINS	14 PINS	12 BALLS
R_θJA	Junction-to-ambient thermal resistance	83.2	195.8	157.9	83.7	°C
R_θJC(top)	Junction-to-case (top) thermal resistance	98.2	98.7	82.3	0.6	°C
R_θJB	Junction-to-board thermal resistance	59.2	122.6	100.0	23.7	°C
ψ_JT	Junction-to-top characterization parameter	17.4	6.2	22.9	0.4	°C
ψ_JB	Junction-to-board characterization parameter	59.4	122.6	99.0	23.7	°C
R_θJC(bot)	Junction-to-case (bottom) thermal resistance	38.7	N/A	N/A	N/A	°C

(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.

7.5 Electrical Characteristics

over recommended operating free-air temperature range (unless otherwise noted)

PARAMETER		TEST CONDITIONS		MIN	TYP⁽¹⁾	MAX	UNIT
V_IK		I_I = -18 mA, V_EN = 0				–1.2	V
I_IH		V_I = 5 V, V_EN = 0				5.0	µA
I_CCBA	Leakage from Vref_B to Vref_A	V_{ref_B} = 3.3 V, V_{ref_A} = 1.8 V, V_EN = V_{ref_A} I_O = 0, V_I = 3.3 V or GND				3.5	µA
I_CCA + I_CCB⁽⁴⁾	Total Current through GND	V_{ref_B} = 3.3 V, V_{ref_A} = 1.8 V, V_EN = V_{ref_A} I_O = 0, V_I = 3.3 V or GND			0.2		µA
I_IN	Control pin current	V_{ref_B} = 5.5 V, V_{ref_A} = 4.5 V, V_EN = 0 to V_{ref_A} I_O = 0				±1	µA
I_off	Power Off Leakage Current	V_{ref_B} = V_{ref_A} = 0 V, V_EN = GND I_O = 0, V_I = 5 V or GND				±1	µA
C_{I(ref_A/B/EN)}		V_I = 3 V or 0			7		pF
C_io(off)		V_O = 3 V or 0, VEN = 0			5.0	6.0	pF
C_io(on)		V_O = 3 V or 0, VEN = Vref_A			10.5	13	pF
⁽³⁾V_{IH (EN pin)}	High-level input voltage	V_{ref_A} = 1.5 V to 4.5 V		0.7×Vref_A			V
V_{IL (EN pin)}	Low-level input voltage	V_{ref_A} = 1.5 V to 4.5 V				0.3×Vref_A	V
V_{IH (EN pin)}	High-level input voltage	V_{ref_A}= 1.0 V to 1.5 V		0.8×Vref_A			V
V_{IL (EN pin)}	Low-level input voltage	V_{ref_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
r_on ⁽²⁾		V_I = 0, I_O = 64 mA	V_{ref_A} = V_EN = 3.3 V; V_{ref_B} = 5 V		3		Ω
		V_I = 0, I_O = 64 mA	V_{ref_A} = V_EN = 1.8 V; V_{ref_B} = 5 V		4		Ω
		V_I = 0, I_O = 32 mA	V_{ref_A} = V_EN = 1.0 V; V_{ref_B} = 5 V		9		Ω
		V_I = 0, I_O = 32 mA	V_{ref_A} = V_EN = 1.8 V; V_{ref_B} = 5 V		4		Ω
		V_I = 0, I_O = 32 mA , V_{ref_A} = V_EN = 2.5 V; V_{ref_B} = 5 V			10		Ω
		V_I = 1.8 V, I_O = 15 mA, V_{ref_A} = V_EN = 3.3 V; V_{ref_B} = 5 V			5		Ω
		V_I = 1.0 V, I_O = 10 mA, V_{ref_A} = V_EN = 1.8 V; V_{ref_B} = 3.3 V			8		Ω
		V_I = 0 V, I_O = 10 mA, V_{ref_A} = V_EN = 1.0 V; V_{ref_B} = 3.3 V			6		Ω
		V_I = 0 V, I_O = 10 mA, V_{ref_A} = V_EN = 1.0 V; V_{ref_B} = 1.8 V			6		Ω

(1) All typical values are at T_A = 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) Enable pin test conditions are for the LSF0204. The enable pin test conditions for LSF0204D are oppositely set.

(4) The actual supply current for LSF0204 is I_CCA + I_CCB; the leakage from Vref_B to Vref_A can be measured on Vref_A and Vref_B pin

7.6 Switching Characteristics: AC Performance (Translating Down, 3.3 V to 1.8 V)

over recommended operating free-air temperature range, V_rev-A = 1.8 V, V_rev-B = 3.3 V, V_EN = 1.8 V, Vpu_1 = 3.3 V,
Vpu_2 = 1.8 V, R_L = NA, V_IH = 3.3 V, V_IL = 0 V_M = 1.15 V (unless otherwise noted)

PARAMETER	FROM (INPUT)	TO (OUTPUT)	C_L = 50 pF		C_L = 30 pF		C_L = 15 pF		UNIT
PARAMETER	FROM (INPUT)	TO (OUTPUT)	TYP	MAX	TYP	MAX	TYP	MAX	UNIT
t_PLH	A or B	B or A	0.7	5.49	0.5	5.29	0.3	5.19	ns
t_PHL			0.9	4.9	0.7	4.7	0.5	4.5	ns
t_PLZ			13	18	12	16.5	11	15	ns
t_PZL			33	45	30	40	23	37	ns
f_MAX			50		100		100		MHz

7.7 Switching Characteristics: AC Performance (Translating Down, 3.3 V to 1.2 V)

over recommended operating free-air temperature range V_rev-A = 1.2 V, V_rev-B = 3.3 V, V_EN = 1.2 V, Vpu_1 = 3.3 V,
Vpu_2 = 1.2 V, R_L = NA, V_IH = 3.3 V, V_IL = 0 V_M = 0.85 V (unless otherwise noted)

PARAMETER	FROM (INPUT)	TO (OUTPUT)	C_L = 50 pF		C_L = 30 pF		C_L = 15 pF		UNIT
PARAMETER	FROM (INPUT)	TO (OUTPUT)	TYP	MAX	TYP	MAX	TYP	MAX	UNIT
t_PLH	A or B	B or A	0.8	4.1	0.5	3.9	0.3	3.8	ns
t_PHL			0.9	4.7	0.7	4.5	0.6	4.3	ns
f_MAX			50		100		100		MHz

7.8 Switching Characteristics: AC Performance (Translating Up, 1.8 V to 3.3 V)

over recommended operating free-air temperature range V_rev-A = 1.8 V, V_rev-B = 3.3 V, V_EN = 1.8 V, Vpu_1 = 3.3 V, Vpu_2 = 1.8 V, R_L = 500 Ω, V_IH = 1.8 V,_VIL = 0 V_M = 0.9 V (unless otherwise noted)

PARAMETER	FROM (INPUT)	TO (OUTPUT)	C_L = 50 pF		C_L = 30 pF		C_L = 15 pF		UNIT
PARAMETER	FROM (INPUT)	TO (OUTPUT)	TYP	MAX	TYP	MAX	TYP	MAX	UNIT
t_PLH	A or B	B or A	0.6	5.7	0.4	5.3	0.2	5.13	ns
t_PHL			1.3	6.7	1	6.4	0.7	5.3	ns
t_PLZ			13	18	12	16.5	11	15	ns
t_PZL			33	45	30	40	23	37	ns
f_MAX			50		100		100		MHz

7.9 Switching Characteristics: AC Performance (Translating Up, 1.2 V to 1.8 V)

over recommended operating free-air temperature range, V_rev-A = 1.2 V, V_rev-B = 1.8 V, V_EN = 1.2 V, Vpu_1 = 1.8 V,
Vpu_2 = 1.2 V, R_L = 500 Ω, V_IH = 1.2 V, V_IL = 0 V_M = 0.6 V (unless otherwise noted)

PARAMETER	FROM (INPUT)	TO (OUTPUT)	C_L = 50 pF		C_L = 30 pF		C_L = 15 pF		UNIT
PARAMETER	FROM (INPUT)	TO (OUTPUT)	TYP	MAX	TYP	MAX	TYP	MAX	UNIT
t_PLH	A or B	B or A	0.65	7.25	0.4	7.05	0.2	6.85	ns
t_PHL			1.6	7.03	1.3	6.5	1	5.4	ns
f_MAX			50		100		100		MHz

7.10 Typical Characteristics

Figure 7-1 Signal Integrity (1.8 V to 3.3 V Translation Up at 50 MHz)

8 Parameter Measurement Information

Figure 8-1 Load Circuit for Outputs

Figure 8-2 Load Circuit for Enable/Disable Time Measurement

8.1 Load Circuit AC Waveform for Outputs

Figure 8-3 t_PLH, t_PHL

Figure 8-4 t_PLZ, t_PZL