ST2149QTR STMicroelectronics

ST2149 4-bit dual supply level translator without direction control pin Datasheet production data Features 42 MHz: 84 Mbps (max.) data rate at V = 1.8 V, V = 3.3 V L CC Bi-directional level translation without direction control pin Wide voltage range (V V ): CC L V ranges from 1.65 to 3.6 V L V ranges from V to 5.5 V CC L QFN16 Power-down mode feature - when V supply (2.6 x 1.8 mm) CC is off, all I/Os are in high impedance Totem pole driving 5.5 V tolerant enable pin The ST2149 accepts V from 1.65 to 3.6 V and L ESD performance on all pins: 2 kV HBM V from 1.65 to 5.5 V, making it ideal for data CC Small package and footprint QFN16 transfer between low-voltage ASICs/PLD and (2.6 x 1.8 mm) package higher voltage systems. This device has a tri-state output mode which can be used to disable all Applications I/Os. The ST2149 supports power-down mode when Low-voltage system level translation V is grounded/floating or when the device is CC Mobile phones and other mobile devices disabled via the OE pin. Description Table 1. Device summary Order code Package Packaging The ST2149 is a 4-bit dual supply level translator which provides the level shifting capability to allow Tape and reel Root part QFN16 data transfer in a multi-voltage system. Externally (3000 number 1QTR (2.6 x 1.8 mm) applied voltages, V and V , set the logic levels CC L parts per reel) on either side of the device. Its architecture allows bi-directional level translation without a control pin. June 2012 Doc ID 15949 Rev 2 1/23 This is information on a product in full production. www.st.com 1Contents ST2149 Contents 1 Pin settings 5 1.1 Pin connection 5 1.2 Pin description 6 2 Logic diagram 7 Device block diagrams 8 3 Supplementary notes 9 3.1 Driver requirements 9 3.2 Load driving capability 9 3.3 Power-off feature 9 3.4 Truth table 9 4 Maximum ratings . 10 Recommended operating conditions 10 5 Electrical characteristics 11 AC characteristics . 13 6 Test circuit 16 7 Package mechanical data 18 8 Revision history . 22 2/23 Doc ID 15949 Rev 2