DS26C31TM National Semiconductor, DS26C31TM Datasheet - Page 3

• Manufacturer Part Number: DS26C31TM
• Description: IC, RS-422 LINE DRIVER, 5.5V, NSOIC-16
• Manufacturer: National Semiconductor

Specifications of DS26C31TM

• Device Type: Line Driver
• Ic Interface Type: RS422
• No. Of Drivers: 4
• Supply Voltage Range: 4.5V To 5.5V
• Driver Case Style: SOIC
• No. Of Pins: 16
• Operating Temperature Range: -40°C To +85°C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

t
Skew
t
t
t
t
t
C
C
t
Skew
t
t
PLH
TLH
PZH
PZL
PHZ
PLZ
PLH
THL
PLZ
DC Electrical Characteristics
Note 1: Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the device
should be operated at these limits. The table of “Electrical Characteristics” provide conditions for actual device operation.
Note 2: Unless otherwise specified, all voltages are referenced to ground. All currents into device pins are positive, all currents out of device pins are negative.
Note 3: Ratings apply to ambient temperature at 25˚C. Above this temperature derate N package at 13.89 mW/˚C, J package 16.13 mW/˚C, M package
9.80 mW/˚C, E package 12.20 mW/˚C, and W package 6.75 mW/˚C.
Note 4: Unless otherwise specified, min/max limits apply across the recommended operating temperature range. All typicals are given for V
Note 5: See EIA Specification RS-422 for exact test conditions.
Note 6: Measured per input. All other inputs at V
Note 7: This is the current sourced when a high output is shorted to ground. Only one output at a time should be shorted.
Note 8: The DS26C31M (−55˚C to +125˚C) is tested with V
Switching Characteristics
V
PD
IN
Note 9: Skew is defined as the difference in propagation delays between complementary outputs at the 50% point.
Note 10: Output disable time is the delay from ENABLE or ENABLE being switched to the output transistors turning off. The actual disable times are less than
indicated due to the delay added by the RC time constant of the load.
Note 11: C
I
Comparison Table of Switching Characteristics into “LS-Type” Load
V
CC
CC
CC
, t
, t
Symbol
, t
, t
.
Symbol
THL
TLH
PHL
PHL
= 5V
= 5V, T
PD
±
determines the no load dynamic power consumption, P
10%, t
A
= 25˚C, t
Propagation Delays
Input to Output
(Note 9)
Differential Output Rise
And Fall Times
Output Enable Time
Output Enable Time
Output Disable Time
(Note 10)
Output Disable Time
(Note 10)
Power Dissipation
Capacitance (Note 11)
Input Capacitance
Propagation Delays
Input to Output
(Note 9)
Differential Output Rise
and Fall Times
Output Disable Time
(Note 10)
r
≤ 6 ns, t
r
≤ 6 ns, t
Parameter
f
Parameter
≤ 6 ns (Figures 1, 2, 3, 4) (Note 4)
f
≤ 6 ns (Figures 2, 4, 5, 6) (Note 12)
CC
or GND.
OUT
(Continued)
between +6V and 0V while RS-422A condition is +6V and −0.25V.
S1 Open
S1 Open
S1 Open
S1 Closed
S1 Closed
S1 Closed
S1 Closed
C
S1 Closed
S2 Closed
C
S1 Closed
S2 Closed
C
S1 Closed
S2 Closed
C
S1 Closed
S2 Open
Conditions
L
L
L
L
D
Conditions
= 30 pF
= 30 pF
= 30 pF
= 10 pF
= C
PD
V
CC
3
2 f + I
CC
Min
2
V
CC
Typ
0.5
, and the no load dynamic current consumption, I
6
4
6
DS26C31T
Typ
0.5
11
13
50
6
6
5
7
6
Max
1.0
8
6
9
DS26C31T
2.0
11
10
19
21
11
9
Typ
2.0
10
15
DS26LS31C
Max
CS26C31M
Max
CC
6.0
15
35
3.0
14
14
22
28
12
14
= 5V and T
S
www.national.com
= C
PD
A
Units
= 25˚C.
V
ns
ns
ns
ns
Units
CC
pF
pF
ns
ns
ns
ns
ns
ns
ns
f +