UM2001P Bidirectional Voltage Level Translator for Open-Drain and Push-Pull Applications UM2001P SOT363 General Description The UM2001P is a bidirectional voltage level translator operational from 1.0V to 3.6V (VCCA) and 1.8V to 5.5V (VCCB), which allows bidirectional voltage translations between 1.0V and 5V without the need for a direction pin in open-drain or push-pull applications. The UM2001P is a 1-bit level translator. Its transmission speeds are below 33MHz for an open-drain system with a 50pF capacitance and a pull-up resistor of 197Ω. The low ON-state resistance (Ron) of the switch allows connections to be made with minimal propagation delay. When EN is high, the translator switch is ON, and the A I/O is connected to the B I/O, allowing bidirectional data flow between ports. When EN is low, the translator switch is off, and a high-impedance state exists between ports. The translators provide excellent ESD protection to lower voltage devices, and at the same time protect less ESD-resistant devices. Applications Features Pin Configurations Provides bidirectional voltage translation with no direction pin Less than 1.5 ns maximum propagation delay Low 3.5Ω ON-state connection between input and output ports provides less signal distortion 5V tolerant I/O ports to support mixed-mode signal operation High-impedance A and B pins for EN=LOW Latch up free operation Flow through pinout for ease of printed-circuit board trace routing ESD protection exceeds: 4kV HBM per JESD22-A114 Package offered: SOT363 Top View 6 A 1 VCCA 2 UA3 GND 3 M 6 B 5 VCCB 4 EN 5 UA3 1 2 4 M SPI, MICROWIRE, and I2C Level Translation Low-Voltage ASIC Level Translation Smart Card Readers Cell-phone Cradles Portable POS Systems Portable Communication Devices Low-Cost Serial Interfaces Cell-Phones GPS Telecommunications Equipment Consumer Electronics Household Appliances 3 M: Month Code UM2001P SOT363 ________________________________________________________________________ http://www.union-ic.com Rev.03 Dec.2014 1/10 UM2001P Pin Description Pin Number Symbol 1 A 2 3 VCCA GND 4 EN 5 VCCB 6 B Function Low-voltage side; connected to VCCA through a pull-up resistor Low-voltage side reference supply voltage for A Ground (0V) Switch enable input; connected to VCCB and pulled-up through a high resistor High-voltage side reference supply voltage for B High-voltage side; connected to VCCB through a pull-up resistor Ordering Information Part Number Packaging Type Marking Code UM2001P SOT363 UA3 Shipping Qty 3000pcs/7Inch Tape & Reel Absolute Maximum Ratings (Note 1) Over operating free-air temperature range (unless otherwise noted) Symbol Parameter VCCA Reference Voltage (A) VCCB Reference Voltage (B) VI VI/O Value -0.5 to +6 -0.5 to +6 Unit V V Input Voltage -0.5(Note 2) to +6 V Voltage on an input/output pin -0.5(Note 2) to +6 V +128 mA -50 -65 to +150 mA °C Ich Channel Current (DC) IIK Tstg Input Clamp Current Storage Temperature VI＜0V Note 1: Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Note 2: The input and input/output negative voltage ratings may be exceeded if the input and input/output clamp current ratings are observed. ________________________________________________________________________ http://www.union-ic.com Rev.03 Dec.2014 2/10 UM2001P Recommended Operating Conditions Symbol Parameter Conditions Min Max Unit VI/O Voltage on an input/output pin A, B 0 5.5 V VCCA (Note 3) Reference Voltage (A) VCCA 0 5.5 V VCCB (Note 3) Reference Voltage (B) VCCB 0 5.5 V VI(EN) Input Voltage on pin EN 0 5.5 V Isw(pass) Pass Switch Current 64 mA Tamb Ambient Temperature -40 +85 °C Typ (Note 4) Max Unit -1.2 V 5 μA Operating in free-air Note 3: VCCA ≤ VCCB −1 V for best results in level shifting applications. Electrical Characteristics Tamb = −40 °C to +85 °C, unless otherwise specified. Symbol VIK IIH Ci(EN) Parameter Conditions Input Clamping Voltage HIGH-level Input Current Input Capacitance on pin EN Off-state input/output capacitance On-state input/output capacitance II = −18mA; VI(EN) = 0V VI= 5V; VI(EN) = 0V VI= 0V or 3V Min 12 pF A, B; VO= 0V or 3V ; 10 12 pF VI(EN) = 0V A, B; 12.5 Cio(on) VO= 0V or 3V ; 8 pF (Note 5) VI(EN) = 3V A, B; VI = 0V; IO = 64mA; 1 2.5 5.0 ON-state VI(EN) = 4.5V(Note 7) Ron resistance Ω A, B; (Note 6) VI = 2.4V; IO = 15mA; 4.5 7.5 VI(EN) = 4.5V Note 4: All typical values are at Tamb = 25°C. Note 5: Not production tested, maximum value based on characterization data of typical parts. Note 6: 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 terminals. Note 7: Guaranteed by design. Cio(off) ________________________________________________________________________ http://www.union-ic.com Rev.03 Dec.2014 3/10 UM2001P Switching Characteristics (translating down) Over recommended operating free-air temperature range(unless otherwise noted). Values guaranteed by design. CL=50pF CL=30pF CL=15pF Test Symbol Parameter Unit Conditions Min Max Min Max Min Max VI(EN) = 3.3V; VIH = 3.3V; VIL = 0V; VM =1.15V(see Figure 1). tPLH tPHL LOW to HIGH propagation delay HIGH to LOW propagation delay 0 3.5 0 2.7 0 2.2 ns 0 3.5 0 3.0 0 2.3 ns from (input) B to (output) A VI(EN) =2.5V; VIH = 2.5V; VIL = 0V; VM = 0.75V (see Figure 1). tPLH tPHL LOW to HIGH propagation delay HIGH to LOW propagation delay 0 3.5 0 2.7 0 2.2 ns 0 4.0 0 3.0 0 2.3 ns from (input) B to (output) A Switching Characteristics (translating up) Over recommended operating free-air temperature range(unless otherwise noted). Values guaranteed by design. CL=50pF CL=30pF CL=15pF Test Symbol Parameter Unit Conditions Min Max Min Max Min Max VI(EN) = 3.3V; VIH = 2.3V; VIL = 0V; VTT = 3.3V; VM = 1.15V; RL = 300Ω(see Figure 1). tPLH tPHL LOW to HIGH propagation delay HIGH to LOW propagation delay 0 3.35 0 2.5 0 2.0 ns 0 4.35 0 3.25 0 2.4 ns from (input) A to (output) B. VI(EN) =2.5V; VIH = 1.5V; VIL = 0V; VTT = 2.5V; VM = 0.75V; RL = 300Ω (see Figure 1). tPLH tPHL LOW to HIGH propagation delay HIGH to LOW propagation delay 0 3.35 0 2.5 0 2.0 ns 0 4.5 0 3.5 0 2.5 ns from (input) A to (output) B. ________________________________________________________________________ http://www.union-ic.com Rev.03 Dec.2014 4/10 UM2001P VIH VTT input VM VM VIL RL S1 from output under test S2(OPEN) CL VOH output VM VM VOL a. Load circuit b. Timing diagram; high-impedance scope probe used S1 = translating up; S2 = translating down. CL includes probe and jig capacitance. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz; Zo = 50 Ω; tr ≤ 5 ns; tf ≤ 5 ns. The outputs are measured one at a time, with one transition per measurement. Fig 1. Load circuit for outputs Applications Information Detail Description The UM2001P is a bidirectional voltage level translator operational from 1.0V to 3.6V (VCCA) and 1.8V to 5.5V (VCCB), which allows bidirectional voltage translations between 1.0V and 5V without the need for a direction pin in open-drain or push-pull applications. When the A or B port is LOW, the clamp is in the ON-state and a low resistance connection exists between the A and B ports. The low ON-state resistance (Ron) of the switch allows connections to be made with minimal propagation delay. Assuming the higher voltage is on the B port when the B port is HIGH, the voltage on the A port is limited to the voltage set by VCCA. When the A port is HIGH, the B port is pulled to the drain pull-up supply voltage (Vpu(D)) by the pull-up resistors. This functionality allows a seamless translation between higher and lower voltages selected by the user without the need for directional control. When EN is HIGH, the translator switch is on, and the A I/O is connected to the B I/O, allowing bidirectional data flow between ports. When EN is LOW, the translator switch is off, and a high-impedance state exists between ports. The EN input circuit is designed to be supplied by VCCB. To ensure the high-impedance state during power-up or power-down, EN must be LOW. All channels have the same electrical characteristics and there is minimal deviation from one output to another in voltage or propagation delay. This is a benefit over discrete transistor voltage translation solutions, since the fabrication of the switch is symmetrical. ________________________________________________________________________ http://www.union-ic.com Rev.03 Dec.2014 5/10 UM2001P Enable and Disable Vpu(D)=3.3V(1) 200kΩ VCCA=1.8V(1) UM2001P VCCA 4 EN 2 5 VCCB RPU Vcc Vcc RPU I2C-BUS MASTER A I/O 1 GND B 6 SW I2C-BUS DEVICE I/O GND 3 GND (1) The applied voltages at VCCA and Vpu(D) should be such that VCCB is at least 1 V higher than VCCA for best translator operation. Fig 2. Typical application circuit (switch always enabled) 3.3V enable signal(1) on off Vpu(D)=3.3V(1) 200kΩ VCCA=1.8V(1) UM2001P VCCA Vcc 5 VCCB RPU Vcc RPU I2C-BUS MASTER I/O GND 2 4 EN A 1 SW 6 B I2C-BUS DEVICE I/O GND 3 GND (1) In the Enabled mode, the applied enable voltage VI(EN) and the applied voltage at VCCA should be such that VCCB is at least 1 V higher than VCCA for best translator operation. Fig 3. Typical application circuit (switch enable control) ________________________________________________________________________ http://www.union-ic.com Rev.03 Dec.2014 6/10 UM2001P Bidirectional translation For the bidirectional clamping configuration (higher voltage to lower voltage or lower voltage to higher voltage), the EN input must be connected to VCCB and both pins pulled to HIGH side Vpu(D) through a pull-up resistor (typically 200kΩ). This allows VCCB to regulate the EN input. A filter capacitor on VCCB is recommended. The master output driver can be totem pole or open-drain (pull-up resistors may be required) and the slave device output can be totem pole or open-drain (pull-up resistors are required to pull the B output to Vpu(D)). However, if either output is totem pole, data must be unidirectional or the outputs must be 3-stateable and be controlled by some direction-control mechanism to prevent HIGH-to-LOW contentions in either direction. If both outputs are open-drain, no direction control is needed. The reference supply voltage (VCCA) is connected to the processor core power supply voltage. When VCCB is connected through a 200kΩ resistor to a 3.3V to 5.5V Vpu(D) power supply, and VCCA is set between 1.0V and (Vpu(D) −1V), the output of A has a maximum output voltage equal to VCCA, and the output of B has a maximum output voltage equal to Vpu(D). Application operating conditions Refer to Figure 2 Symbol Parameter VCCB Reference Voltage (B) Input Voltage on pin EN Reference Voltage (A) Pass Switch Current Reference Current VI(EN) VCCA Isw(pass) Iref Conditions Transistor Operating Tamb Ambient Temperature in free-air Note 8: All typical values are at Tamb = 25 °C. VCCA + 0.6 Typ (Note 8) 2.1 VCCA + 0.6 2.1 5 V 0 1.5 14 5 4.4 V mA μA +85 °C Min -40 Max Unit 5 V Sizing pull-up resistor The pull-up resistor value needs to limit the current through the pass transistor when it is in the ON state to about 15mA. This ensures a pass voltage of 260mV to 350mV. If the current through the pass transistor is higher than 15mA, the pass voltage also is higher in the ON state. To set the current through each pass transistor at 15mA, the pull-up resistor value is calculated as: RPU V pu( D ) 0.35V 0.015 A The table below summarizes resistor reference voltages and currents at 15mA, 10mA, and 3mA. The resistor values shown in the +10 % column or a larger value should be used to ensure that the pass voltage of the transistor would be 350 mV or less. The external driver must be able to sink the total current from the resistors on both sides of the UM2001P device at 0.175V, although the 15mA only applies to current flowing through the UM2001P device. ________________________________________________________________________ http://www.union-ic.com Rev.03 Dec.2014 7/10 UM2001P Pull-up resistor values Calculated for VOL = 0.35V; assumes output driver VOL = 0.175V at stated current. Pull-up resistor value (Ω) 15mA 10mA 3mA Vpu(D) +10 % +10 % +10 % Nominal Nominal Nominal (Note 9) (Note 9) (Note 9) 5V 310 341 465 512 1550 1705 3.3V 197 217 295 325 983 1082 2.5V 143 158 215 237 717 788 1.8V 97 106 145 160 483 532 1.5V 77 85 115 127 383 422 1.2V 57 63 85 94 283 312 Note 9: +10 % to compensate for VCC range and resistor tolerance. ________________________________________________________________________ http://www.union-ic.com Rev.03 Dec.2014 8/10 UM2001P Package Information UM2001P SOT363 Outline Drawing D θ e1 Symbol L e 5 4 1 2 3 L1 E E1 6 20 c b A End View A1 A2 Top View Side View A A1 A2 b c D E E1 e e1 L L1 θ DIMENSIONS MILLIMETERS Min Max 0.900 1.100 0.000 0.100 0.900 1.000 0.100 0.350 0.080 0.220 1.800 2.200 1.150 1.350 2.000 2.450 0.650REF 1.200 1.400 0.525REF 0.260 0.460 0° 8° INCHES Min Max 0.035 0.043 0.000 0.004 0.036 0.039 0.004 0.014 0.003 0.009 0.071 0.087 0.045 0.053 0.079 0.096 0.026REF 0.047 0.055 0.021REF 0.010 0.018 0° 8° Land Pattern 1.94 1.30 0.80 NOTES: 1. Compound dimension: 2.00×1.25; 2. Unit: mm; 3.General tolerance ±0.05mm unless otherwise specified; 4. The layout is just for reference. 0.35 UA3 M Tape and Reel Orientation ________________________________________________________________________ http://www.union-ic.com Rev.03 Dec.2014 9/10 UM2001P IMPORTANT NOTICE The information in this document has been carefully reviewed and is believed to be accurate. Nonetheless, this document is subject to change without notice. Union assumes no responsibility for any inaccuracies that may be contained in this document, and makes no commitment to update or to keep current the contained information, or to notify a person or organization of any update. Union reserves the right to make changes, at any time, in order to improve reliability, function or design and to attempt to supply the best product possible. Union Semiconductor, Inc Add: Unit 606, No.570 Shengxia Road, Shanghai 201210 Tel: 021-51093966 Fax: 021-51026018 Website: www.union-ic.com ________________________________________________________________________ http://www.union-ic.com Rev.03 Dec.2014 10/10