
Philips Semiconductors
Product specification
SC28L92
3.3V–5.0V Dual Universal Asynchronous
Receiver/Transmitter (DUART)
2000 Jan 21
11
DC ELECTRICAL CHARACTERISTICS1, 2, 3
VCC = 3.3V ± 10%, Tamb = –40°C to +85°C, unless otherwise specified.
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Min
Typ
Max
UNIT
VIL
Input low voltage
0.65
0.2*VCC
V
VIH
Input high voltage
0.8*VCC
1.7
V
VOL
Output low voltage
IOL = 2.4mA
0.2
0.4
V
VOH
Output high voltage (except OD outputs)4
IOH = –400A
VCC–0.5
VCC–0.2
V
IIX1PD
X1/CLK input current - power down
VIN = 0 to VCC
–0.5
0.05
+0.5
A
IILX1
X1/CLK input low current - operating
VIN = 0
–80
0
A
IIHX1
X1/CLK input high current - operating
VIN = VCC
0
80
A
Input leakage current:
II
All except input port pins
VIN = 0 to VCC
–0.5
0.05
+0.5
A
Input port pins5
VIN = 0 to VCC
–8
0.5
+0.5
A
IOZH
Output off current high, 3-State data bus
VIN = VCC
0.5
A
IOZL
Output off current low, 3-State data bus
VIN = 0V
–0.5
A
IODL
Open-drain output low current in off-state
VIN = 0
–0.5
A
IODH
Open-drain output high current in off-state
VIN = VCC
0.5
A
Power supply current6
ICC
Operating mode
CMOS input levels
5
mA
Power down mode
CMOS input levels
≤1
5.0
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 2
A from VCC when the input pins are at VSS.
Input port pins at VCC source 0.0A.
6. All outputs are disconnected. Inputs are switching between CMOS levels of VCC –0.2V and VSS+0.2V.