ST2129QTR STMicroelectronics

ST2129 2-bit dual supply level translator without direction control pin Features 42 MHz: 84 Mbps (max) data rate at V = 1.8 V, V = 3.3 V L CC Bidirectional level translation without direction control pin Wide voltage range (V V ): CC L V ranges from 1.65 to 3.6 V L QFN10 V ranges from 1.65 to 5.5 V CC (1.8 x 1.4 mm) Power down mode feature - when V supply CC is off, all I/Os are in high impedance Totem-pole driving 5.5 V tolerant enable pin Description ESD performance on all pins : 2 kv HBM The ST2129 is a 2-bit dual supply level translator Small package and footprint: which provides the level shifting capability to allow QFN10 (1.8 x 1.4 mm) data transfer in a multi-voltage system. Externally applied voltages, V and V , set the logic levels CC L Applications on either side of the device. Its architecture allows bidirectional level translation without a control pin. Low voltage system level translation The ST2129 accepts V from 1.65 to 3.6 V and Mobile phones and other mobile devices L V from 1.65 to 5.5 V, making it ideal for data CC 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. The ST2129 supports power-down mode when V is grounded/floating or when the device is CC disabled via the OE pin. Table 1. Device summary Order Code Package Packaging ST2129QTR QFN10 (1.8 x 1.4 mm) Tape & reel (3000 parts per reel) September 2009 Doc ID 15967 Rev 1 1/20 www.st.com 20Pin settings ST2129 1 Pin settings 1.1 Pin connection Figure 1. Pin connection (top through view) V V CC L 10 9 I/O 8 1 I/O VCC1 VL1 7 I/O 2 I/O VCC2 VL2 6 GND 3 OE 5 4 NC NC CS00011 1.2 Pin description Table 2. Pin description Pin number Symbol Name and function 1I/O Data input/output VL1 2I/O Data input/output VL2 3 OE Output enable 4 NC No connection 5 NC No connection 6 GND Ground 7I/O Data input/output VCC2 8I/O Data input/output VCC1 9V Supply voltage CC 10 V Supply voltage L 2/20 Doc ID 15967 Rev 1