±15kV ESD-Protected, 1µA, 16Mbps, Dual/Quad

Low-Voltage Level Translators in UCSP

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11

circuitry limits the maximum data rate for devices in the

MAX3372E–MAX3379E, MAX3390E–MAX3393E family to

16Mbps. The maximum data rate also depends heavily

on the load capacitance (see Typical Operating

Characteristics), output impedance of the driver, and the

operational voltage range (see Timing Characteristics).

Speed-Up Circuitry

The MAX3373E–MAX3376E/MAX3378E/MAX3379E and

MAX3390E–MAX3393E feature a one-shot generator that

decreases the rise time of the output. When triggered,

MOSFETs PU1 and PU2 turn on for a short time to pull up

Figure 2b). This greatly reduces the rise time and propa-

gation delay for the low-to-high transition. The scope

photo of Rail-to-Rail Driving for 8Mbps Operation in the

Typical Operating Characteristics shows the speed-up

circuitry in operation.

Three-State Output Mode

Pull THREE-STATE low to place the MAX3372E–

MAX3379E and MAX3390E–MAX3393E in three-state out-

normal operation. Activating the three-state output mode

disconnects the internal 10k

Ω pullup resistors on the I/O

impedance state, and decreases the supply current to

less than 1µA. The high-impedance I/O lines in three-

state output mode allow for use in a multidrop network.

When in three-state output mode, do not allow the voltage

Thermal Short-Circuit Protection

Thermal overload detection protects the MAX3372E–

MAX3379E and MAX3390E–MAX3393E from short-circuit

fault conditions. In the event of a short-circuit fault, when

sensor signals the three-state output mode logic to force

cooled to +142°C, normal operation resumes.

MAX3372E–MAX3379E

AND MAX3390E–MAX3393E

GND

DATA

MAX3373E–MAX3376E,

MAX3378E/MAX3379E

AND MAX3390E–MAX3393E

DATA

GND