SC28L92 datasheet(53/73 Pages) NXP

53 / 73 page

SC28L92_7

Product data sheet

Rev. 07 — 19 December 2007

53 of 73

NXP Semiconductors

SC28L92

3.3 V/5.0 V Dual Universal Asynchronous Receiver/Transmitter

[1]

The following conditions apply:

a) Parameters are valid over speciﬁed temperature and voltage range.

b) All voltage measurements are referenced to ground. For testing, all inputs swing between 0.4 V and 3.0 V with a transition time of

5 ns maximum. For X1/CLK this swing is between 0.4 V and 0.8VCC. All time measurements are referenced at input voltages of 0.8 V

and 2.0 V, and output voltages of 0.8 V and 2.0 V, as appropriate.

c) Typical values are at 25

°C, typical supply voltages, and typical processing parameters.

[2]

Test conditions for outputs: CL = 125 pF, except interrupt outputs. Test conditions for interrupt outputs: CL = 125 pF,

constant current source = 2.6 mA.

[3]

Input port pins have active pull-up transistors that will source a typical 2

µA from V

CC when they are at VSS. Input port pins at VCC source

0.0

µA.

[4]

All outputs are disconnected. Inputs are switching between CMOS levels of VCC − 0.2 V and VSS + 0.2 V.

Table 66.

Static characteristics, 3.3 V operation[1]

VCC = 3.3 V ± 10 %; Tamb = −40 °Cto+85 °C; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIL

input LOW voltage

0.65

0.2VCC V

VIH

input HIGH voltage

0.8VCC

1.7

VOL

output LOW voltage

IOL = 2.4 mA

0.2

0.4

VOH

output HIGH voltage

except open-drain outputs;

IOH = −400 µA

[2] VCC − 0.5 VCC − 0.2 -

II(1XPD)

Power-down mode input

current on pin X1/CLK

VI = 0 V to VCC

−0.5

+0.05

+0.5

µA

IIL(X1)

operating input LOW current

on pin X1/CLK

VI =0V

−80

µA

IIH(X1)

operating input HIGH current

on pin X1/CLK

VI =VCC

µA

input leakage current

VI = 0 V to VCC

all except input port pins

[3]

−0.5

+0.05

+0.5

µA

input port pins

[3]

−8

+0.5

µA

IOZH

output off current HIGH,

3-state data bus

VI =VCC

0.5

µA

IOZL

output off current LOW, 3-state

data bus

VI =0V

−0.5

µA

IODL

open-drain output LOW current

in off state

VI =0V

−0.5

µA

IODH

open-drain output HIGH

current in off state

VI =VCC

0.5

µA

ICC

power supply current

CMOS input levels

[4]

operating mode

Power-down mode

≤1

5.0

µA

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