TI DS26C32AM

Obsolete Device: DS26C32AM
DS26C32AM,DS26C32AT
DS26C32AT/DS26C32AM Quad Differential Line Receiver
Literature Number: SNLS382B
June 1998
DS26C32AT/DS26C32AM
Quad Differential Line Receiver
General Description
Features
The DS26C32A is a quad differential line receiver designed
to meet the RS-422, RS-423, and Federal Standards 1020
and 1030 for balanced and unbalanced digital data transmission, while retaining the low power characteristics of CMOS.
The DS26C32A has an input sensitivity of 200 mV over the
common mode input voltage range of ± 7V. The DS26C32A
features internal pull-up and pull-down resistors which prevent output oscillation on unused channels.
n CMOS design for low power
n ± 0.2V sensitivity over input common mode voltage
range
n Typical propagation delays: 19 ns
n Typical input hysteresis: 60 mV
n Inputs won’t load line when VCC = 0V
n Meets the requirements of EIA standard RS-422
n TRI-STATE outputs for connection to system buses
n Available in Surface Mount
n Mil-Std-883C compliant
The DS26C32A provides an enable and disable function
common to all four receivers, and features TRI-STATE ®
outputs with 6 mA source and sink capability. This product is
pin compatible with the DS26LS32A and the AM26LS32.
Logic Diagram
00876401
Connection Diagrams
20-Lead Ceramic Leadless Chip Carrier
Dual-In-Line Package
00876412
00876402
Top View
Order Number DS26C32ATM or DS26C32ATN
See NS Package M16A or N16E
For Complete Military Product Specifications,
refer to the appropriate SMD or MDS.
Order Number DS26C32AME/883, DS26C32AMJ/883 or
DS26C32AMW/883
See NS Package E20A, J16A or W16A
TRI-STATE ® is a registered trademark of National Semiconductor Corporation.
© 2004 National Semiconductor Corporation
DS008764
www.national.com
DS26C32AT/DS26C32AM Quad Differential Line Receiver
Obsolete Device: DS26C32AM
DS26C32AT/DS26C32AM
Obsolete Device: DS26C32AM
Absolute Maximum Ratings
SOIC “M” Pkg.
1190 mW
1)
Ceramic “E” Pkg.
2108 mW
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Ceramic “W” Pkg.
1215 mW
(Notes 2,
Supply Voltage (VCC)
Differential Input Voltage (V
Enable Input Voltage (V
This device does not meet 2000V ESD rating. (Note 4)
7V
± 14V
± 14V
Common Mode Range (VCM)
DIFF)
IN)
Storage Temperature Range (T
Operating Conditions
7V
STG)
Supply Voltage (VCC)
−65˚C to +150˚C
Lead Temperature (Soldering 4 sec.)
260˚C
2308 mW
Plastic “N” Pkg.
1645 mW
Min
Max Units
4.50
5.50
V
Operating Temperature Range (TA)
Maximum Power Dissipation at 25˚C (Note 5)
Ceramic “J” Pkg.
± 25 mA
Maximum Current Per Output
DS26C32AT
−40
+85
˚C
DS26C32AM
−55
+125
˚C
500
ns
Enable Input Rise or Fall Times
DC Electrical Characteristics
VCC = 5V ± 10% (unless otherwise specified) (Note 1)
Symbol
VTH
RIN
IIN
VOH
VOL
VIH
Parameter
Conditions
Minimum Differential
V
Input Voltage
−7V < VCM < +7V
Input Resistance
Input Current
OUT
= VOH or VOL
Min
Typ
Max
Units
−200
35
+200
mV
VIN = −7V, +7V
DS26C32AT
5.0
6.8
10
kΩ
(Other Input = GND)
DS26C32AM
4.5
6.8
11
kΩ
VIN = +10V,
DS26C32AT
+1.1
+1.5
mA
Other Input = GND
DS26C32AM
+1.1
+1.8
mA
VIN = −10V,
DS26C32AT
−2.0
−2.5
mA
Other Input = GND
DS26C32AM
−2.0
−2.7
mA
Minimum High Level
V
Output Voltage
I
Maximum Low Level
V
Output Voltage
I
CC
OUT
CC
OUT
= Min, VDIFF = +1V
3.8
4.2
V
= −6.0 mA
= Max, VDIFF = −1V
0.2
0.3
V
= 6.0 mA
Minimum Enable High
2.0
V
Input Level Voltage
VIL
Maximum Enable Low
0.8
V
± 5.0
µA
± 1.0
µA
Input Level Voltage
IOZ
Maximum TRI-STATE ®
V
Output Leakage Current
ENABLE = VIL,
OUT
= VCC or GND,
± 0.5
ENABLE = VIH
II
Maximum Enable Input
V
IN
= VCC or GND
Current
ICC
VHYST
Quiescent Power
VCC = Max,
DS26C32AT
16
23
mA
Supply Current
VDIF = +1V
DS26C32AM
16
25
mA
Input Hysteresis
V
CM
= 0V
60
mV
Max
Units
AC Electrical Characteristics
VCC = 5V ± 10% (Note 3)
Symbol
Parameter
Conditions
tPLH,
Propagation Delay
CL = 50 pF
tPHL
Input to Output
VDIFF = 2.5V
Min
10
VCM = 0V
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2
Typ
19
DS26C32AT
DS26C32AM
30
35
ns
AC Electrical Characteristics
(Continued)
VCC = 5V ± 10% (Note 3)
Symbol
Parameter
Conditions
tRISE,
Output Rise and
CL = 50 pF
tFALL
Fall Times
VDIFF = 2.5V
tPLZ,
Propagation Delay
CL = 50 pF
tPHZ
ENABLE to Output
RL = 1000Ω
tPZL,
Propagation Delay
CL = 50 pF
tPZH
ENABLE to Output
RL = 1000Ω
Min
Typ
Max
Units
DS26C32AT
DS26C32AM
4
9
9
ns
13
22
29
ns
13
23
29
ns
VCM = 0V
VDIFF = 2.5V
VDIFF = 2.5V
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” provides conditions for actual device operation.
Note 2: Unless otherwise specified, all voltages are referenced to ground.
Note 3: Unless otherwise specified, Min/Max limits apply over recommended operating conditions. All typicals are given for VCC = 5V and TA = 25˚C.
Note 4: ESD Rating: HBM (1.5 kΩ, 100 pF)
Inputs ≥2000V
All other pins ≥1000V
EIAJ (0Ω, 200 pF) ≥350V
Note 5: Ratings apply to ambient temperature at 25˚C. Above this temperature derate N Package 13.16 mW/˚C, J Package 15.38 mW/˚C, M Package 9.52 mW/˚C,
E Package 12.04 mW/˚C, and W package 6.94 mW/˚C.
Comparison Table of Switching Characteristics into “LS-Type” Load
(Figures 4, 5, 6) (Note 6)
Symbol
tPLH
Parameter
Conditions
Input to Output
CL = 15 pF
ENABLE to Output
CL = 5 pF
tPHL
tLZ
tHZ
tZL
ENABLE to Output
CL = 15 pF
tZH
DS26C32A
DS26LS32A
Typ
Typ
Units
17
23
ns
19
23
ns
13
15
ns
12
20
ns
13
14
ns
13
15
ns
Note 6: This table is provided for comparison purposes only. The values in this table for the DS26C32A reflect the performance of the device, but are not tested
or guaranteed.
Test and Switching Waveforms
00876403
FIGURE 1. Propagation Delay
3
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DS26C32AT/DS26C32AM
Obsolete Device: DS26C32AM
DS26C32AT/DS26C32AM
Obsolete Device: DS26C32AM
Test and Switching Waveforms
(Continued)
00876404
CL includes load and test jig capacitance.
S1 = VCC for t PZL, and tPLZ measurements.
S1 = Gnd for tPZH and tPHZ measurements.
FIGURE 2. Test Circuit for TRI-STATE Output Tests
00876405
FIGURE 3. TRI-STATE ® Output Enable and Disable Waveforms
AC Test Circuit and Switching Time Waveforms
00876406
FIGURE 4. Load Test Circuit for TRI-STATE Outputs for “LS-Type” Load
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4
AC Test Circuit and Switching Time Waveforms
DS26C32AT/DS26C32AM
Obsolete Device: DS26C32AM
(Continued)
00876407
FIGURE 5. Propagation Delay for “LS-Type” Load (Notes 7, 9)
00876408
FIGURE 6. Enable and Disable Times for “LS-Type” Load (Notes 8, 9)
Note 7: Diagram shown for ENABLE low.
Note 8: S1 and S2 of load circuit are closed except where shown.
Note 9: Pulse generator for all pulses: Rate ≤ 1.0 MHz; ZO = 50Ω; tr ≤ 15 ns; t f ≤ 6.0 ns.
Truth Table
ENABLE
ENABLE
Input
L
H
X
All Other
Combinations of
Enable Inputs
Output
Z
VID ≥ V
TH
(Max)
VID ≤ V
TH
(Min)
Open
H
L
H
Z = TRI-STATE
Typical Applications
Two-Wire Balanced Systems, RS-422
00876409
5
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DS26C32AT/DS26C32AM
Obsolete Device: DS26C32AM
Typical Performance Characteristics
Differential Propagation Delay
vs Temperature
Differential Propagation Delay
vs Power Supply Voltage
00876413
00876414
Differential Skew vs
Temperature
Differential Skew vs Power
Supply Voltage
00876415
00876416
Output High Voltage vs
Output High Current
Output High Voltage vs
Output High Current
00876417
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00876418
6
Typical Performance Characteristics
DS26C32AT/DS26C32AM
Obsolete Device: DS26C32AM
(Continued)
Output Low Voltage vs
Output Low Current
Output Low Voltage vs
Output Low Current
00876419
00876420
Input Resistance vs
Input Voltage
Input Current vs Power
Supply Voltage
00876422
00876421
Hysteresis & Differential
Transition Voltage vs
Power Supply Voltage
Hysteresis & Differential
Transition Voltage vs
Temperature
00876423
00876424
7
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DS26C32AT/DS26C32AM
Obsolete Device: DS26C32AM
Typical Performance Characteristics
(Continued)
Supply Current vs
Temperature
Disabled Supply Current vs
Power Supply Voltage
00876425
00876426
Supply Current vs
Data Rate
00876427
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8
Physical Dimensions
DS26C32AT/DS26C32AM
Obsolete Device: DS26C32AM
inches (millimeters)
unless otherwise noted
20-Lead Ceramic Leadless Chip Carrier (E)
Order Number DS26C32AME/883
NS Package Number E20A
16-Lead Ceramic Dual-In-Line Package (J)
Order Number DS26C32AMJ/883
NS Package Number J16A
9
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DS26C32AT/DS26C32AM
Obsolete Device: DS26C32AM
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
16-Lead Molded Small Outline Package (M)
Order Number DS26C32ATM
NS Package Number M16A
16-Lead Molded Dual-In-Line Package (N)
Order Number DS26C32ATN
NS Package Number N16E
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10
Physical Dimensions
DS26C32AT/DS26C32AM Quad Differential Line Receiver
Obsolete Device: DS26C32AM
inches (millimeters) unless otherwise noted (Continued)
16-Lead Ceramic FlatPak (W)
Order Number DS26C32AMW/883
NS Package Number W16A
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