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SC28L92 View Datasheet(PDF) - Philips Electronics

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Description
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SC28L92 Datasheet PDF : 44 Pages
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Philips Semiconductors
3.3V–5.0V Dual Universal Asynchronous
Receiver/Transmitter (DUART)
Product specification
SC28L92
ABSOLUTE MAXIMUM RATINGS1
SYMBOL
Tamb
Tstg
VCC
VS
PD
PD
PARAMETER
Operating ambient temperature range2
Storage temperature range
Voltage from VCC to GND3
Voltage from any pin to GND3
Package power dissipation (PLCC44)
Package power dissipation (PQFP44)
Derating factor above 25_C (PLCC44)
RATING
Note 4
–65 to +150
–0.5 to +7.0
–0.5 to VCC +0.5
2.4
1.78
19
UNIT
°C
°C
V
V
W
W
mW/°C
Derating factor above 25_C (PQFP44)
14
mW/°C
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.
4. Parameters are valid over specified temperature and voltage range.
DC ELECTRICAL CHARACTERISTICS1, 2, 3
VCC = 5V ± 10%, Tamb = –40°C to +85°C, unless otherwise specified.
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Min
Typ Max
UNIT
VIL
Input low voltage
VIH
Input high voltage (except X1/CLK)
VIH
Input high voltage (X1/CLK)
0.8
V
2.4
1.5
V
0.8*VCC 2.4
V
VOL
Output low voltage
VOH
Output high voltage (except OD outputs)4
IOL = 2.4mA
IOH = -400µA
0.2
0.4
V
VCC -0.5
V
IIX1PD
IILX1
IIHX1
X1/CLK input current - power down
X1/CLK input low current - operating
X1/CLK input high current - operating
Input leakage current:
VIN = 0 to VCC
VIN = 0
VIN = VCC
0.5
0.05 0.5
µA
–130
0
µA
0
130
µA
II
IOZH
IOZL
IODL
IODH
All except input port pins
Input port pins5
Output off current high, 3-State data bus
Output off current low, 3-State data bus
Open-drain output low current in off-state
Open-drain output high current in off-state
Power supply current6
VIN = 0 to VCC
VIN = 0 to VCC
VIN = VCC
VIN = 0V
VIN = 0
VIN = VCC
–0.5
0.05 +0.5
µA
–8
0.05 +0.5
µA
0.5
µA
–0.5
µA
–0.5
µA
0.5
µA
ICC
Operating mode
Power down mode
CMOS input levels
CMOS input levels
7
25
mA
1
5
mA
NOTES:
1. Parameters are valid over specified temperature and voltage range.
2. All voltage measurements are referenced to ground (GND). For testing, all inputs swing between 0.4V and 3.0V with a transition time of
5ns maximum. For X1/CLK, this swing is between 0.4V and 0.8*VCC. All time measurements are referenced at input voltages of 0.8V and
2.0V and output voltages of 0.8V and 2.0V, as appropriate.
3. Typical values are at +25°C, typical supply voltages, and typical processing parameters.
4. Test conditions for outputs: CL = 125pF, except open drain outputs. Test conditions for open drain outputs: CL = 125pF,
constant current source = 2.6mA.
5. Input port pins have active pull-up transistors that will source a typical 2µA from VCC when the input pins are at VSS.
Input port pins at VCC source 0.0µA.
6. All outputs are disconnected. Inputs are switching between CMOS levels of VCC -0.2V and VSS + 0.2V.
2000 Jan 21
10
 

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