DS26C32AM [TI]
DS26C32AT/DS26C32AM Quad Differential Line Receiver; DS26C32AT / DS26C32AM四路差动线路接收器
| 型号： | DS26C32AM |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | DS26C32AT/DS26C32AM Quad Differential Line Receiver |
| 文件： | 总13页 (文件大小：607K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Obsolete Device: DS26C32AM
DS26C32AM,DS26C32AT
DS26C32AT/DS26C32AM Quad Differential Line Receiver
Literature Number: SNLS382B
Obsolete Device: DS26C32AM
June 1998
DS26C32AT/DS26C32AM
Quad Differential Line Receiver
General Description
Features
n CMOS design for low power
0.2V sensitivity over input common mode voltage
range
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 transmis-
sion, while retaining the low power characteristics of CMOS.
n
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
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 pre-
vent output oscillation on unused channels.
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.
®
n Mil-Std-883C compliant
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
Obsolete Device: DS26C32AM
Absolute Maximum Ratings (Notes 2,
SOIC “M” Pkg.
1190 mW
2108 mW
1215 mW
25 mA
Ceramic “E” Pkg.
1)
Ceramic “W” Pkg.
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Maximum Current Per Output
This device does not meet 2000V ESD rating. (Note 4)
Supply Voltage (VCC
)
7V
Common Mode Range (VCM
Differential Input Voltage (V
)
14V
Operating Conditions
)
14V
7V
DIFF
Min Max Units
Enable Input Voltage (V
)
IN
Supply Voltage (VCC
)
4.50 5.50
V
Storage Temperature Range (T
)
−65˚C to +150˚C
260˚C
STG
Operating Temperature Range (TA)
DS26C32AT
Lead Temperature (Soldering 4 sec.)
−40 +85
−55 +125
500
˚C
˚C
ns
Maximum Power Dissipation at 25˚C (Note 5)
Ceramic “J” Pkg.
DS26C32AM
2308 mW
1645 mW
Enable Input Rise or Fall Times
Plastic “N” Pkg.
DC Electrical Characteristics
VCC = 5V 10% (unless otherwise specified) (Note 1)
Symbol
VTH
Parameter
Minimum Differential
Input Voltage
Conditions
= VOH or VOL
Min
Typ
Max
Units
V
−200
35
+200
mV
OUT
<
<
−7V VCM +7V
VIN = −7V, +7V
(Other Input = GND)
VIN = +10V,
RIN
IIN
Input Resistance
DS26C32AT
DS26C32AM
DS26C32AT
DS26C32AM
DS26C32AT
DS26C32AM
5.0
4.5
6.8
6.8
10
kΩ
kΩ
mA
mA
mA
mA
V
11
Input Current
+1.1
+1.1
−2.0
−2.0
4.2
+1.5
+1.8
−2.5
−2.7
Other Input = GND
VIN = −10V,
Other Input = GND
VOH
VOL
VIH
VIL
Minimum High Level
Output Voltage
V
I
= Min, VDIFF = +1V
= −6.0 mA
3.8
2.0
CC
OUT
Maximum Low Level
Output Voltage
V
= Max, VDIFF = −1V
= 6.0 mA
0.2
0.3
0.8
V
V
V
CC
I
OUT
Minimum Enable High
Input Level Voltage
Maximum Enable Low
Input Level Voltage
Maximum TRI-STATE®
Output Leakage Current
IOZ
V
= VCC or GND,
OUT
ENABLE = VIL,
ENABLE = VIH
0.5
5.0
1.0
µA
µA
II
Maximum Enable Input
Current
V
= VCC or GND
IN
ICC
Quiescent Power
Supply Current
Input Hysteresis
VCC = Max,
VDIF = +1V
DS26C32AT
DS26C32AM
16
16
60
23
25
mA
mA
mV
VHYST
V
= 0V
CM
AC Electrical Characteristics
VCC = 5V 10% (Note 3)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
DS26C32AT
DS26C32AM
tPLH
,
Propagation Delay
Input to Output
CL = 50 pF
tPHL
VDIFF = 2.5V
VCM = 0V
10
19
30
35
ns
www.national.com
2
Obsolete Device: DS26C32AM
AC Electrical Characteristics (Continued)
VCC = 5V 10% (Note 3)
Symbol Parameter
Conditions
Min
Typ
Max
Units
ns
DS26C32AT
DS26C32AM
tRISE
,
Output Rise and
Fall Times
CL = 50 pF
tFALL
VDIFF = 2.5V
VCM = 0V
4
9
9
tPLZ
,
Propagation Delay
ENABLE to Output
CL = 50 pF
RL = 1000Ω
VDIFF = 2.5V
CL = 50 pF
RL = 1000Ω
VDIFF = 2.5V
tPHZ
13
13
22
23
29
29
ns
tPZL
,
Propagation Delay
ENABLE to Output
tPZH
ns
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 V
= 5V and T = 25˚C.
A
CC
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
Parameter
Conditions
CL = 15 pF
DS26C32A
DS26LS32A
Units
Typ
17
19
13
12
13
13
Typ
23
23
15
20
14
15
tPLH
tPHL
tLZ
Input to Output
ns
ns
ns
ns
ns
ns
ENABLE to Output
ENABLE to Output
CL = 5 pF
tHZ
tZL
CL = 15 pF
tZH
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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Obsolete Device: DS26C32AM
Test and Switching Waveforms (Continued)
00876404
C
includes load and test jig capacitance.
L
1
1
S
S
= V
for t
, and t
measurements.
measurements.
CC
PZL
PZH
PLZ
PHZ
= Gnd for t
and t
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
www.national.com
4
Obsolete Device: DS26C32AM
AC Test Circuit and Switching Time Waveforms (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; Z = 50Ω; t ≤ 15 ns; t ≤ 6.0 ns.
O
r
f
Truth Table
ENABLE ENABLE
Input
Output
L
H
X
Z
H
L
All Other
VID ≥ V
VID ≤ V
(Max)
(Min)
TH
TH
Combinations of
Enable Inputs
Open
H
Z = TRI-STATE
Typical Applications
Two-Wire Balanced Systems, RS-422
00876409
5
www.national.com
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
00876418
www.national.com
6
Obsolete Device: DS26C32AM
Typical Performance Characteristics (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
00876421
00876422
Hysteresis & Differential
Transition Voltage vs
Temperature
Hysteresis & Differential
Transition Voltage vs
Power Supply Voltage
00876423
00876424
7
www.national.com
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
www.national.com
8
Obsolete Device: DS26C32AM
Physical Dimensions 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
www.national.com
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
www.national.com
10
Obsolete Device: DS26C32AM
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
16-Lead Ceramic FlatPak (W)
Order Number DS26C32AMW/883
NS Package Number W16A
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