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ST26C31 Datasheet(PDF) 4 Page - STMicroelectronics

Part No. ST26C31
Description  CMOS QUAD TRI-STATE DIFFERENTIAL LINE DRIVER
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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ST26C31 Datasheet(HTML) 4 Page - STMicroelectronics

 
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ELECTRICAL CHARACTERISTICS (VCC =5V ± 10%, unless otherwise specified, See Note 1)
Note 1: Unless otherwise specified, min/max limits apply across the recommended operating temperature range. All typical are given for VCC
=5V and Ta = 25°C
Note 2: See EIA Specification RS422 for exact test conditions.
Note 3: Measured per pin input. All other input at VCC or GND.
Note 4: This is the current sourced when a high output is shorted to ground. Only one output at time should be shorted.
SWITCHING CHARACTERISTICS (VCC =5V ± 10%, tr =tf ≤ 6ns, See Note 1)
Note 1: Unless otherwise specified, min/max limits apply across the recommended operating temperature range. All typical are given for
VCC=5V and Ta = 25°C
Note 2: Skewis defined as the difference in propagation delays between complementary outputs at the 50% point.
Note 3: Output disable time is the delay from the control input being switched to the output transistors tuming off. The actual disable times
are less than indicated due to the delay added by RC time constant of the load.
Note 4: CPD determines the no load dynamic power consumption, PD =CPD V
2
CCf= ICCVCC, and the no load dynamic current consumption,
PD =CPD VCCf+ ICC
Symbol
Parameter
Test Conditions
Value
Unit
Min.
Typ.
Max.
VIH
High Level Input Voltage
2
V
VIL
Low Level Input Voltage
0.8
V
VOH
High Level Output Voltage
VIN =VIH or VIL,IOUT = -20mA
2.5
3.4
V
VOL
Low Level Output Voltage
VIN =VIH or VIL,IOUT = +20mA
0.3
0.5
V
VT
Differential Output Voltage
RL =100 Ω (Note 2)
2
3.1
V
VT-VT
Difference in Differential
Output Voltage
RL =100 Ω (Note 2)
0.4
V
VOS
Common Mode Output
Voltage
RL =100 Ω (Note 2)
1.8
3
V
VOS-
VOS
Difference in Common
Mode Output Voltage
RL =100 Ω (Note 2)
0.4
V
IIN
Input Current
VIN =VCC, GND, VIH or VIL
±1
µA
ICC
Quiescent Supply Current
(Note 2)
IOUT =0 µA
VIN =VCC or GND
200
500
µA
VIN = 2.4 or 0.5 V (Note 3)
0.8
2
mA
IOZ
3-STATE Output Leakage
Current
VOUT =VCC or GND
ENABLE = VIL
ENABLE =VIH
±0.5
±5
µA
ISC
Output Short Circuit Current VIN =VCC or GND (Notes 2, 4)
-30
-150
mA
IOFF
Power Off Output Leakage
Current (Note 2)
VCC =0 V
VOUT = 6 V
100
µA
VOUT = -0.25 V
-100
µA
Symbol
Parameter
Test Conditions
Value
Unit
Min.
Typ.
Max.
tPLH
tPHL
Propagation Delay Input to
Output
S1 Open
2
6
11
ns
Skew
(Note 2)
S1 Open
0.5
2
ns
tTLH
tTHL
Differential Output Rise and
Fall Times
S1 Open
6
10
ns
tPZH
Output Enable Time
S1 Closed
11
19
ns
tPZL
Output Enable Time
S1 Closed
13
21
ns
tPHZ
Output Disable Time
(Note 3)
S1 Closed
5
9
ns
tPLZ
Output Disable Time
(Note 3)
S1 Closed
7
11
ns
CPD
Power Dissipation
Capacitance (Note 4)
50
pF
CIN
Input Capacitance
6
pF


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