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.

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