ST2189QTR STMicroelectronics

ST2189 8-bit dual supply level translator without direction control pin Features 46 MHz: 92 Mbps data transfer when V = CCA 3.6 V Bidirectional level translation without direction control pin Wide voltage range of 1.65 V to 3.6 V for both V and V CCA CCB Configurable voltage translation: V can be V or V can be V CCA CCB CCA CCB Partial power down support - when V is CCB QFN20 grounded, all the outputs will automatically go (1.8 x 3.2 mm) to high impedance. Low quiescent current (5 A) ESD performance: Description 4 kV HBM (human body model) The ST2189 is an 8-bit dual supply level translator Applications which provides the level shifting capability to allow data transfer in a multi-voltage system. Externally Low voltage system level translation applied voltages, V and V , set the logic CCB CCA Mobile phones levels on either side of the device. Its architecture allows bidirectional level translation without a Other mobile devices control pin. The ST2189 accepts V from 1.65 V to 3.6 V CCA and V from 1.65 V to 3.6 V, making it ideal for CCB data transfer between low-voltage ASICs/PLD and higher voltage systems. This device has a tri- state output mode which can be used to disable all I/Os. In power down mode feature - when V supply CCB is grounded, all I/Os go to high impedance automatically, with very low quiescent current on V supply. CCA Table 1. Device summary Order code Package Packing ST2189QTR QFN20 (3.2 x 1.8 mm) Tape and reel August 2009 Doc ID 15918 Rev 1 1/21 www.st.com 21Pin settings ST2189 1 Pin settings 1.1 Pin connection Figure 1. Pin connection (top through view) 1.2 Pin description Table 2. Pin description Pin number Type Side Symbol Name and function Input/output 1. Referenced to 1 I/O V A1 CCA V CCA Input/output 2. Referenced to 2 I/O V A2 CCA V CCA Input/output 3. Referenced to 3 I/O V A3 CCA V CCA Input/output 4. Referenced to 4 I/O V A4 CCA V CCA Output enabled. Pull OE low to put 5- V OE all output to tri-state mode. CCA Referenced to V CCA A port supply voltage. V CCA 6- V V CCA CCA V or V V CCB CCA CCB Input/output 5. Referenced to 7 I/O V A5 CCA V CCA 2/21 Doc ID 15918 Rev 1