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ST1G3234BBJR Scheda tecnica(PDF) 1 Page - STMicroelectronics |
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ST1G3234BBJR Scheda tecnica(HTML) 1 Page - STMicroelectronics |
1 / 17 page December 2007 Rev 2 1/17 17 ST1G3234B 1-bit dual supply bus buffer level translator with A-side series resistor Features ■ High speed: tPD = 4.0 ns (max.) at TA =85°C VCCB = 1.65 V; VCCA = 3.0 V ■ Low power dissipation: ICCA =ICCB =5 μA (max.) at TA =85°C ■ Symmetrical output impedance: |IOHA|=IOLA = 10 mA min at VCCA = 2.75 V; VCCB = 1.4 to 3.6 V |IOHA|=IOLA = 6 mA min. at VCCA = 2.3 V; VCCB = 1.4 to 3.6 V ■ Balanced propagation delays: tPLH ≅ tPHL ■ Power-down protection on inputs and outputs ■ 26 Ω series resistor on A-side outputs ■ Operating voltage range: –VCCA (opr.) = 1.4 to 3.6 V –VCCB (opr.) = 1.4 to 3.6 V ■ Allows partial power-down when VCCA =0, device consumes very low quiescent current ■ Max data rates: – 380 Mbps (1.8 to 3.3 V translation) – 260 Mbps (<1.8 to 3.3 V translation) – 260 Mbps (translates to 2.5 V) – 210 Mbps (translates to 1.5 V) ■ Latch-up performance exceeds 500 mA (JESD 17) ■ ESD performance: HBM > 2000 V (MIL STD 883 method 3015); MM > 200 V ■ ROHS compliant to Flip-Chip package Description The ST1G3234B is a dual supply low voltage CMOS 1-bit bus buffer level translator fabricated with sub-micron silicon gate and five-layer metal wiring C2MOS technology. Designed for use as an interface between a 3.3 V bus and a 2.5 V or 1.8 V bus in a mixed 3.3 V/1.8 V, 3.3 V/2.5 V, 1.8 V/1.4 V and 2.5 V/1.8 V supply systems, it achieves high speed operation while maintaining the CMOS low power dissipation. The ST1G3234B is intended for one-way asynchronous communication between data buses. The input and output power-down protections disable the device when both power supply are down, so that the buses are effectively isolated. The input tolerant buffers allow to translate VCCB compatible signals and greater signals than VCCB up/down to VCCA. All inputs are equipped with protection circuits against static discharge, giving them ESD immunity and transient excess voltage. The ST1G3234B is VCCA = 0 V tolerant, achieving very low current consumption when the VCCA is grounded. Flip-Chip 5 www.st.com Table 1. Device summary Order code Package Comments ST1G3234BBJR Flip-Chip 5 4000 parts per reel |
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