LTC2962/LTC2963/LTC2964

4

Rev 0

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ELECTRICAL CHARACTERISTICS

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: All currents into pins are positive; all voltages are referenced to

GND unless otherwise noted.

typically 6µA. However, external pull-up resistors may be used when faster

WDS Input Current

l

l

–4

–2.6

2.6

4

µA

µA

l

±1

µA

2

µs

WDI Input Pulse Width

l

2

µs

WDI to WDO Propagation Delay

l

0.5

µs

Logic I/O

Voltage Output Low RST, WDO (Note 3)

RST Only

40

150

mV

l

10

60

mV

Voltage Output Low OUTn (LTC2964, Note 4)

50

300

mV

Voltage Output High RST, WDO (Note 3)

l

V

Voltage Output High, OUTn (LTC2964, Note 4)

l

V

RST, WDO Output Voltage High Leakage

l

100

nA

RST, WDO and OUTn Internal Pull-Up Current

V = GND

l

–4

–6

-10

µA

RDIS, MR and WDI Input Level Low

l

0.4

V

RDIS, MR and WDI Input Level High

l

1.6

V

RDIS, MR and WDI Internal Pull-up Current

V = GND

l

–16

–10

–4

µA

MR Input Pulse Width

l

150

ns

MR Input Propagation Delay

MR Falling to RST Falling

l

0.1

1

µs

(Note 2)