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ST2149 Scheda tecnica(PDF) 1 Page - STMicroelectronics |
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ST2149 Scheda tecnica(HTML) 1 Page - STMicroelectronics |
1 / 23 page This is information on a product in full production. June 2012 Doc ID 15949 Rev 2 1/23 1 ST2149 4-bit dual supply level translator without direction control pin Datasheet −production data Features ■ 42 MHz: 84 Mbps (max.) data rate at VL = 1.8 V, VCC = 3.3 V ■ Bi-directional level translation without direction control pin ■ Wide voltage range (VCC ≥ VL): –VL ranges from 1.65 to 3.6 V –VCC ranges from VL to 5.5 V ■ Power-down mode feature - when VCC supply is off, all I/Os are in high impedance ■ Totem pole driving ■ 5.5 V tolerant enable pin ■ ESD performance on all pins: ±2 kV HBM ■ Small package and footprint QFN16 (2.6 x 1.8 mm) package Applications ■ Low-voltage system level translation ■ Mobile phones and other mobile devices Description The ST2149 is a 4-bit dual supply level translator which provides the level shifting capability to allow data transfer in a multi-voltage system. Externally applied voltages, VCC and VL, set the logic levels on either side of the device. Its architecture allows bi-directional level translation without a control pin. The ST2149 accepts VL from 1.65 to 3.6 V and VCC from 1.65 to 5.5 V, making it ideal for 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. The ST2149 supports power-down mode when VCC is grounded/floating or when the device is disabled via the OE pin. Table 1. Device summary Order code Package Packaging Root part number 1QTR QFN16 (2.6 x 1.8 mm) Tape and reel (3000 parts per reel) QFN16 (2.6 x 1.8 mm) www.st.com |
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