+1.2V to +5.5V, ±15kV ESD-Protected, 0.1µA,

35Mbps, 8-Channel Level Translators

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15

Detailed Description

The MAX3000E/MAX3001E/MAX3002–MAX3012 logic-

level translators provide the level shifting necessary to

allow data transfer in a multivoltage system. Externally

either side of the device. Logic signals present on the

The MAX3000E/MAX3001E/MAX3002/MAX3003 are

bidirectional level translators allowing data translation

The MAX3004–MAX3012 unidirectional level translators

ing them ideal for data transfer between low-voltage

ASICs/PLDs and higher voltage systems.

The MAX3000E/MAX3001E/MAX3002/MAX3004–

MAX3012 feature an output enable mode that reduces

current to less than 2µA when in shutdown. The

MAX3000E/MAX3001E have ±15kV ESD protection on

route signals externally. The MAX3000E operates at a

guaranteed data rate of 230kbps; the MAX3001E oper-

ates at a guaranteed data rate of 4Mbps and the

MAX3002–MAX3012 are guaranteed with a data rate of

20Mbps of operation over the entire specified operating

voltage range.

Level Translation

For proper operation, ensure that +1.65V

+1.2V

not latch up.

The maximum data rate also depends heavily on the

load capacitance (see the Typical Operating

Characteristics), output impedance of the driver, and

the operational voltage range (see the Timing

Characteristics).

Input Driver Requirements

The MAX3001E/MAX3002–MAX3012 architecture is

based on a one-shot accelerator output stage. See

state except when there is a transition on any of the

Then, a short pulse is generated during which the accel-

erator output stages become active and charge/dis-

charge the capacitances at the I/Os. Due to its

bidirectional nature, both input stages become active

during the one-shot pulse. This can lead to some current

feeding into the external source that is driving the trans-

lator. However, this behavior helps to speed up the tran-

sition on the driven side.

For proper operation, the driver has to meet the follow-

ing conditions: 50

Ω maximum output impedance and

20mA minimum output current (for 20Mbps versions),

400

Ω maximum output impedance and 4mA minimum

output current (for 4Mbps versions), 1k

Ω maximum out-

put impedance and 1mA minimum output current (for

230kbps versions). Figure 6 shows a typical input cur-

rent vs. input voltage.

Enable Output Mode (EN, EN A/B)

The MAX3000E/MAX3001E/MAX3002 and the MAX3004–

MAX3012 feature an EN input, and the MAX3003 has an

EN A/B input. Pull EN low to set the MAX3000E/

Ω pulldown resis-

the MAX3003, pull EN A/B low to place channels 1B

through 4B in active mode, while channels 1A through

4A are in three-state mode. Drive EN A/B to logic high

1B through 4B remain in three-state mode.

±15kV ESD Protection

As with all Maxim devices, ESD-protection structures

are incorporated on all pins to protect against electro-

static discharges encountered during handling and

against static discharge. Maxim’s engineers have

developed state-of-the-art structures to protect these

pins against ESD of ±15kV without damage. The ESD

structures withstand high ESD in all states: normal

operation, three-state output mode, and powered

down. After an ESD event, Maxim’s E versions keep

working without latchup, whereas competing products

can latch and must be powered down to remove

latchup.

ESD protection can be tested in various ways. The

acterized for protection to ±15kV using the Human

Body Model.