
Philips Semiconductors
Product specification
SCC68692
Dual asynchronous receiver/transmitter (DUART)
1998 Sep 04
6
DC ELECTRICAL CHARACTERISTICS
1, 2, 3
SYMBOL
PARAMETER
TEST CONDITIONS
LIMITS
UNIT
Min
Typ
Max
0.8
V
IL
V
IH6
V
IH7
V
IH
V
OL
V
OH4
Input low voltage
Input high voltage (except X1/CLK)
Input high voltage (except X1/CLK)
Input high voltage (X1/CLK)
Output low voltage
Output high voltage (except OD outputs)
V
V
V
V
V
V
2.0
2.5
0.8V
CC
I
OL
= 2.4mA
I
OH
= –400
μ
A
0.4
V
–0.5
–10
–75
0
0
–10
–75
1
I
IX1PD
I
ILX1
I
IHX1
I
OHX2
I
OHX2S
I
OLX2
I
OLX2S
X1/CLK input current – power down
X1/CLK input low current – operating
X1/CLK input high current – operating
X2 output high current – operating
X2 output high short circuit current – operating
X2 output low current – operating
X2 output low short circuit current – operating and
power down
Input leakage current:
All except input port pins
Input port pins
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 current
5
Operating mode
V
IN
= 0 to V
CC
V
IN
= 0
V
IN
= V
CC
V
OUT
= V
CC
, X1 = 0
V
OUT
= 0, X1 = 0
V
OUT
= 0, X1 = V
CC
V
OUT
= V
CC
, X1 = V
CC
+10
0
75
+75
–1
0
10
μ
A
μ
A
μ
A
μ
A
mA
μ
A
mA
I
I
V
IN
= 0 to V
CC
V
IN
= 0 to V
CC
V
IN
= V
CC
V
IN
= 0V
V
IN
= 0
V
IN
= V
CC
–10
–20
+10
+10
10
μ
A
μ
A
μ
A
μ
A
μ
A
μ
A
I
OZH
I
OZL
I
ODL
I
ODH
–10
–10
10
TTL input levels
CMOS input levels
TTL input levels
CMOS input levels
10
10
3.0
2.0
mA
mA
mA
mA
I
CC
Power down mode
8
NOTES:
1. Parameters are valid over specified temperature range.
2. All voltage measurements are referenced to ground (GND). For testing, all inputs swing between 0.4V and 2.4V with a transition time of 5ns
maximum. For X1/CLK this swing is between 0.4V and 4.4V. 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: C
L
= 150pF, except interrupt outputs. Test condition for interrupt outputs: C
L
= 50pF, R
L
= 2.7k
to V
CC
.
5. All outputs are disconnected. Inputs are switching between TTL levels of 2.4V and 0.4V or CMOS levels of V
CC
–0.2V and V
SS
+ 0.2V.
6. T
A
> 0
°
C
7. T
A
< 0
°
C
8. See UART application note for power down currents less than 5
μ
A.