Philips Semiconductors

Product data

SCC68681

Dual asynchronous receiver/transmitter (DUART)

2004 Apr 06

20

SYMBOL

PARAMETER

RATING

UNIT

See Note 4

°C

Storage temperature range

–65 to +150

°C

–0.5 to +6.0

V

Maximum pin voltages

V

NOTES:

1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and

functional operation of the device at these or any other condition above those indicated in the operation section of this specification is not

implied.

2. For operating at elevated temperatures, the device must be derated based on +150

°C maximum junction temperature.

3. This product includes circuitry specifically designed for the protection of its internal devices from damaging effects of excessive static

charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying any voltages larger than the rated maxima.

supply range.

SYMBOL

PARAMETER

TEST CONDITIONS

LIMITS

UNIT

SYMBOL

PARAMETER

TEST CONDITIONS

Min

Typ

Max

UNIT

LOW-level input voltage

–

–

0.8

V

HIGH-level input voltage (except X1/CLK)

2.0

–

–

V

HIGH-level input voltage (except X1/CLK)

2.5

–

–

V

HIGH-level input voltage (X1/CLK)

–

–

V

LOW-level output voltage

–

–

0.4

V

–

–

V

X1/CLK input current

–10

–

+10

µA

X1/CLK input LOW current – operating

–75

–

0

µA

X1/CLK input HIGH current – operating

0

–

75

µA

X2 output HIGH current – operating

0

–

+75

µA

X2 output HIGH short circuit current – operating

–10

–

–1

mA

X2 output LOW current – operating

–75

–

0

µA

X2 output LOW short circuit current – operating

1

–

10

mA

Input leakage current:

All except input port pins

–10

–

+10

µA

Input port pins

–20

–

+10

µA

Output off current HIGH, 3-state data bus

–

–

10

µA

Output off current LOW, 3-state data bus

–10

–

–

µA

Open-drain output LOW current in off-state

–10

–

–

µA

Open-drain output HIGH current in off-state

–

–

10

µA

Operating mode

CMOS input levels

–

–

10

mA

NOTES:

1. Parameters are valid over specified temperature range.

2. All voltage measurements are referenced to ground (GND). For testing, all inputs swing between 0.4 V and 2.4 V with a transition time of

5 ns maximum. For X1/CLK this swing is between 0.4 V and 4.4 V. 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.

3. Typical values are at +25

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