DS26C31M, DS26C31T
SNLS375B –JUNE 1998–REVISED APRIL 2013
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DC Electrical Characteristics
VCC = 5V ± 10% (unless otherwise specified)(1)
Symbol
Parameter
High Level Input Voltage
Low Level Input Voltage
High Level Output Voltage
Conditions
Min
Typ
Max
Units
VIH
VIL
2.0
V
V
V
0.8
VOH
VIN = VIH or VIL,
IOUT = −20 mA
VIN = VIH or VIL,
IOUT = 20 mA
RL = 100Ω
See(2)
2.5
2.0
3.4
0.3
3.1
VOL
VT
Low Level Output Voltage
0.5
V
V
V
V
V
Differential Output Voltage
Difference In Differential Output
Common Mode Output Voltage
|VT| − |VT
|
RL = 100Ω
See(2)
0.4
3.0
0.4
VOS
RL = 100Ω
See(2)
1.8
|VOS − VOS
|
Difference In Common Mode
Output
RL = 100Ω
See(2)
IIN
Input Current
Quiescent Supply Current(3)
VIN = VCC, GND, VIH, or VIL
±1.0
500
2.0
μA
μA
ICC
DS26C31T
IOUT = 0 μA
DS26C31M
IOUT = 0 μA
VIN = VCC or GND
200
0.8
200
0.8
VIN = 2.4V or 0.5V(3)
VIN = VCC or GND
VIN = 2.4V or 0.5V(3)
mA
μA
500
2.1
mA
IOZ
TRI-STATE Output Leakage
Current
VOUT = VCC or GND
ENABLE = VIL
±0.5
±5.0
μA
ENABLE = VIH
ISC
Output Short Circuit Current
VIN = VCC or GND(2)(4)
−30
−150
100
mA
μA
μA
μA
μA
IOFF
Output Leakage Current Power
Off(2)
DS26C31T
VCC = 0V
VOUT = 6V
VOUT = −0.25V
−100
100
DS26C31M
VCC = 0V
VOUT = 6V
VOUT = 0V(5)
−100
(1) Unless otherwise specified, min/max limits apply across the recommended operating temperature range. All typicals are given for VCC
5V and TA = 25°C.
=
(2) See EIA Specification RS-422 for exact test conditions.
(3) Measured per input. All other inputs at VCC or GND.
(4) This is the current sourced when a high output is shorted to ground. Only one output at a time should be shorted.
(5) The DS26C31M (−55°C to +125°C) is tested with VOUT between +6V and 0V while RS-422A condition is +6V and −0.25V.
Switching Characteristics
VCC = 5V ±10%, tr ≤ 6 ns, tf ≤ 6 ns (Figure 3, Figure 4, Figure 5, Figure 6)(1)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
DS26C31T
CS26C31M
tPLH, tPHL
Propagation Delays Input to Output S1 Open
2
6
0.5
6
11
2.0
10
14
3.0
14
ns
ns
ns
(2)
Skew
S1 Open
tTLH, tTHL
Differential Output Rise And Fall
Times
S1 Open
tPZH
tPZL
Output Enable Time
Output Enable Time
S1 Closed
S1 Closed
11
13
19
21
22
28
ns
ns
(1) Unless otherwise specified, min/max limits apply across the recommended operating temperature range. All typicals are given for VCC
5V and TA = 25°C.
=
(2) Skew is defined as the difference in propagation delays between complementary outputs at the 50% point.
4
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