PRELIMINARY TECHNICAL DATA Low Voltage 1.2 V to 5.5 V, Bidirectional, Logic Level Translators Preliminary Technical Data ADG3304 a FEATURES Bidirectional Level Translation Operates from 1.2 V to 5.5 V 12 Bump WLCSP package and 14-lead TSSOP µA Low Quiescent Current <5µ FUNCTIONAL BLOCK DIAGRAM VCCA APPLICATIONS SPITM, MicrowireTM and I2CTM Translation Low Voltage ASIC level Translation Smart Card Readers Cell Phones & Cell-Phone Cradles Portable Communication Devices Telecommunicatons Equipment Network Switches and Routers Storage Systems (SAN/NAS) Computing/Server Applications GPS Portable POS Systems Low Cost Serial Interfaces VCCY A1 Y1 A2 Y2 A3 Y3 A4 Y4 EN GND GENERAL DESCRIPTION PRODUCT HIGHLIGHTS The ADG3304 is a 4-Channel bidirectional level translator. Its function is to provide level shifting in a multivoltage system. The voltage applied to VCCA sets up the logic levels on the A side of the device, while VCCY sets the levels on the Y side. In this way, signals applied to the VCCA side of the device appear as VCCY compatible logic on the other side of the device and vice versa as the device is designed to handle bidirectional signals. The device is guaranteed for operation over the supply range 1.2 V to 5.5 V. 1. 2. Bidirectional Level Translation. The ADG3304 is fully guaranteed from 1.2 V to 5.5 V supply range. 3. 14 lead TSSOP and 12 lead WLCSP package. These devices are suited to applications like data transfer between a low voltage DSP/Controller and a higher voltage device. Other applications include high end consumer products where constant changes to the chipset desgins result in multiple supply levels in the application. VCCY operates from +1.65 to 5.5 V while VCCA from +1.2 to VCCY. VCCA must always operate from a supply that is lower than VCCY. When the device Enable pin (EN) is pulled low, the Ax and Yx inputs/outputs are tri-stated. The EN pin is driven high for normal operation. EN pin is referred to VCCA voltage. REV. PrC Feb 2004 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 Analog Devices, Inc., 2004 PRELIMINARY TECHNICAL DATA 1 ADG3304–SPECIFICATIONS (V = +1.65 to 5.5 V, V = +1.1 to V , GND = 0 V, All specifications T CCY CCA CCY Parameter Symbol LOGIC INPUTS/OUTPUTS Input High Voltage VIH Input Low Voltage VIL Output High Voltage VOH Output Low Voltage VOL Input Leakage Current Output Leakage Current Input Capacitance3 Output Capacitance3 II IO CIN CO SWITCHING CHARACTERISTICS3 3.3V ± 0.3V ⱕ VCCA ⱕ VCCY ⱕ 5V ± 0.5V Propagation Delay, tPD Y-A A-Y Rise Time tR_Y Fall Time tF_Y Rise Time tR_A Fall Time tF_A Maximum Data Rate Channel To Channel Skew tSKEW Part To Part Skew tPPSKEW 1.8V ± 0.15V ⱕ VCCA ⱕ VCCY ⱕ 3.3V ±0.3V Y-A Propagation Delay, tPD A-Y Rise Time tR_Y Fall Time tF_Y Rise Time tR_A Fall Time tF_A Maximum Data Rate Channel To Channel Skew tSKEW 1.2V ± 0.1 V ⱕ VCCA ⱕ VCCY ⱕ 3.3 ± 0.3 V Propagation Delay, tPD Y-A A-Y Rise Time tR_Y Fall Time tF_Y Rise Time tR_A Fall Time tF_A Maximum Data Rate Channel To Channel Skew tSKEW 2.5V ± 0.2V ⱕ VCCA ⱕ VCCY ⱕ 3.3V ± 0.3V Propagation Delay, tPD Y-A A-Y Rise Time tR_Y Fall Time tF_Y Rise Time tR_A Fall Time tF_A Maximum Data Rate Channel To Channel Skew tSKEW POWER REQUIREMENTS Power Supply Voltages Quiescent Power Supply Current VCCY VCCA ICCY ICCA MIN to TMAX unless otherwise noted) Conditions Min Typ2 Max VCCY -0.4 VCCA -0.4 IOH = 20 µA, IOH = 20 µA, IOL = 20 µA, IOL = 20 µA, 0 ⱕ VIN ⱕ 3.6 V 0 ⱕ VIN ⱕ 3.6 V f = 1 MHz, VA/Y = VCCA/Y or GND f = 1 MHz, VA/Y = VCCY/A or GND RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, CA = 15 pF CY = 50 pF CY = 50 pF CY = 50 pF CA = 15 pF CA = 15 pF CY = 50 pF, CA = 15 pF CY = 50 pF, CA = 15 pF CY = 50 pF, CA = 15 pF RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, CA = 15 pF CY = 50 pF CY = 50 pF CY = 50 pF CA = 15 pF CA = 15 pF CY = 50 pF, CA = 15 pF CY = 50 pF, CA = 15 pF 0.4 0.4 VCCY -0.4 VCCA -0.4 0.4 0.4 ±1 ±1 5 5 5 5 5 5 5 5 40 tbd tbd 10 15 10 10 10 10 Units V V V V V V V V µA µA pF pF ns ns ns ns ns ns Mbps ns ns 5 ns ns ns ns ns ns Mbps ns RS = 50Ω, CA = 15 pF RS = 50Ω, CY = 50 pF 20 20 ns ns RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, CY = 50 pF CY = 50 pF CA = 15 pF CA = 15 pF CY = 50 pF, CA = 15 pF CY = 50 pF, CA = 15 pF 15 15 15 15 ns ns ns ns Mbps ns RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, RS = 50Ω, CA = 15 pF CY = 50 pF CY = 50 pF CY = 50 pF CA = 15 pF CA = 15 pF CY = 50 pF, CA = 15 pF CY = 50 pF, CA = 15 pF 35 20 5 8.5 8.5 8.5 8.5 8.5 8.5 NOTES 1 Temperature range is as follows: B Version: –40°C to +85°C. 2 All typical vlaues are at T A = +25°C unless otherwise stated. 3 Guaranteed by design, not subject to production test. Specifications subject to change without notice. –2– 5.5 5.5 5 5 V V µA µA 40 1.65 1.1 Digital Inputs = 0 V or VCCY Digital Inputs = 0 V or VCCA 10 ns ns ns ns ns ns Mbps ns REV. PrC PRELIMINARY TECHNICAL DATA ADG3304 ABSOLUTE MAXIMUM RATINGS1 Pin Configuration 14 Lead TSSOP (RU-14) (T A = 25°C unless otherwise noted) VCCY to GND . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to +7 V VCCA to GND . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to +7 V Digtal Inputs (A) . . . . . . . . . . . . . . -0.3 V to (VCCA +0.3V) Digtal Inputs (Y) . . . . . . . . . . . . . . -0.3 V to (VCCY +0.3V) EN to GND . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to +7 V Operating Temperature Range Industrial (B Version) . . . . . . . . . . . . . . –40°C to +85°C Storage Temperature Range . . . . . . . . . –65°C to +150°C Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . 150°C 14 Lead TSSOP θJA Thermal Impedance . . . . . . . . . . . . . . . . . . . . 150°C/W Lead Temperature, Soldering (10seconds) . . . . . . . 300°C IR Reflow, Peak Temperature (<20 seconds) . . . +235°C VCCA 1 14 VCCY 13 Y1 A1 2 12 Y2 A2 3 A3 4 ADG3304 11 Y3 A4 5 (Not to Scale) 10 Y4 NC 6 9 NC GND 7 8 EN 12 Lead WLCSP (CB-12) NOTES 1 Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specifcation is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Only one absolute maximum rating may be applied at any one time. a b c 1 A1 VCCY Y1 A2 VCCA Y2 A3 EN A4 GND Y4 2 3 Y3 4 ORDERING GUIDE Model Temperature Range Package Description Package Option ADG3304BRU ADG3304BCB –40°C to +85°C –40°C to +85°C TSSOP WLCSP RU-14 CB-12 CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the ADG3304 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. REV. PrC –3– WARNING! ESD SENSITIVE DEVICE PRELIMINARY TECHNICAL DATA ADG3304 GENERAL DESCRIPTION As the driven side has to drive a load capacitance through this 6k resistance, one shot generators are used to drive large mos devices in the output stage to help speed up the rate of switching. The output stage is inactive and three state except when transistions are present on either side of the translator. When this happens the one shot fires turning on the output stage and driving the load capacitance faster than if it were driven through the resistor. As the device is bi-directional, both input stages will be active during this period. While this design gives maximum speed from the device, it can result in some current driving back into the source driving the input of the translator. The ADG3304 level translator allows the required level shifting necessary for data transfer in a system where multiple voltages are used. The device requires two supplies, VCCA and VCCY. These supplies set the logic levels on each side of the device. The device translates data present on the VA side of the device to the higher voltage level at the VY side of the device. Similarly, as the device is capable of bidirectional translation, data applied to the VY side will be translated to the voltage referenced to VA. Level Translator Architecture The forward channel consists of a string of inverters and a level translator, while the reverse channel consists simply of inverters. A level translator is not required in the reverse path (Y-A) as the supply voltage VCCY must always be greater than or equal to VCCA. A current limiting resistor is used in series with each channel to prevent any contention issues, see figure 1. To ensure correct operation, the input driver should meet the following requirements - 50 Ω maximum output impedance with minimum of 20mA output current when driving 20Mbps. Enable Operation When pulled low, the EN input allows the user to tri-state both sides (A and Y) of the level translator. EN pin is referred to VCCA voltage. VCCY VCCA One Shot Generator 6k A Y One Shot Generator 6k Figure 1. Simplified Functional Diagram of one channel. –4– REV. PrC PRELIMINARY TECHNICAL DATA ADG3304 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). PR04860-0-4/04(PrC) 14-Lead TSSOP (RU-14) 0.201 (5.10) 0.193 (4.90) 14 0.256 (6.50) 0.246 (6.25) 0.177 (4.50) 0.169 (4.30) 8 1 7 PIN 1 0.006 (0.15) 0.002 (0.05) SEATING PLANE 0.0433 (1.10) MAX 0.0256 (0.65) BSC 0.0118 (0.30) 0.0075 (0.19) 0.0079 (0.20) 0.0035 (0.090) 8° 0° 0.028 (0.70) 0.020 (0.50) 12-Lead WLCSP (CB-12) 0.079 (2.0) Pin 1 Identifier 0.079 (2.0) 0.0035 (0.09) 0.013 (0.32) 1 0.059 (1.5) Top View 0.059 (1.5) Bottom View 0.0035 (0.09) 0.0197 (0.5) 0.0086 (0.22) 0.0224 (0.57) 0.0138 (0.35) Side View REV. PrC –5–