DS9638CN/NOPB [TI]
DUAL LINE DRIVER, PDIP8, PLASTIC, DIP-8;
| 型号： | DS9638CN/NOPB |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | DUAL LINE DRIVER, PDIP8, PLASTIC, DIP-8 驱动 光电二极管 接口集成电路 驱动器 |
| 文件： | 总7页 (文件大小：630K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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May 1998
DS9638
RS-422 Dual High Speed Differential Line Driver
General Description
Features
n Single 5V supply
The DS9638 is a Schottky, TTL compatible, dual differential
line driver designed specifically to meet the EIA Standard
RS-422 specifications. It is designed to provide unipolar
differential drive to twisted pair or parallel wire transmission
lines. The inputs are TTL compatible. The outputs are similar
to totem pole TTL outputs, with active pull-up and pull-down.
The device features a short circuit protected active pull-up
with low output impedance and is specified to drive 50Ω
transmission lines at high speed. The mini-DIP provides high
package density.
n Schottky technology
n TTL and CMOS compatible inputs
n Output short circuit protection
n Input clamp diodes
n Complementary outputs
n Minimum output skew ( 1.0 ns typical)
<
n 50 mA output drive capability for 50Ω transmission lines
n Meets EIA RS-422 specifications
n Propagation delay of less than 10 ns
n “Glitchless” differential output
n Delay time stable with VCC and temperature variations
<
(
2.0 ns typical) (Figure 3)
n Extended temperature range
Connection Diagram
8-Lead DIP
00962201
Top View
Order Number DS9638CM or DS9638CN
See NS Package Number M08A or N08E
For Complete Military Product Specifications,
refer to the appropriate SMD or MDS.
Order Number DS9638MJ/883
See NS Package Number J08A
© 2004 National Semiconductor Corporation
DS009622
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Absolute Maximum Ratings (Note 2)
Ceramic DIP (Soldering, 60 sec.)
Molded DIP (Soldering, 10 sec.)
Maximum Power Dissipation (Note 1) at 25˚C
Cavity Package
300˚C
265˚C
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
1300 mW
930 mW
810 mW
−5V to 7V
Storage Temperature Range
Molded Package
Ceramic DIP
−65˚C to
+175˚C
−65˚C to
+150˚C
SO Package
VCC Lead Potential to Ground
Molded DIP and SO-8
Lead Temperature
Input Voltage
−0.5V to +7V
Recommended Operating Conditions
DS9638M
DS9638C
Typ
Min
Typ
Max
5.5
Min
Max
5.25
−50
50
Units
V
Supply Voltage (VCC
)
4.5
5.0
4.75
5.0
Output Current HIGH (IOH
)
−50
50
mA
mA
˚C
Output Current LOW (IOL
)
40
0
Operating Temperature (T
)
−55
25
125
25
70
A
Note 1: Derate cavity package 8.7 mW/˚C above 25˚C; derate molded DIP package 7.5 mW/˚C above 25˚C; derate SO package 6.5 mW˚C above 25˚C.
Electrical Characteristics (Notes 3, 4)
Over recommended operating temperature and supply voltage ranges, unless otherwise specified
Symbol
VIH
Parameter
Input Voltage HIGH
Conditions
Min
Typ
Max
Units
2.0
V
V
VIL
Input Voltage LOW
0˚C to +70˚C
−55˚C to +125˚C
= Min, II = −18 mA
0.8
0.5
VIC
Input Clamp Voltage
Output Voltage HIGH
V
−1.0
3.5
−1.2
V
V
CC
VOH
VCC = Min,
VIH = VIH Min
VIL = VIL Max
IOH = −10 mA
2.5
2.0
,
IOH = −40 mA
VOL
II
Output Voltage LOW
V
V
V
= Min, VIH = VIH Min
,
0.5
50
V
CC
= VIL Max, IOL = 40 mA
= Max, VI Max = 5.5V
IL
Input Current at Maximum
Input Voltage
µA
CC
IIH
Input Current HIGH
V
V
V
= Max, VIH = 2.7V
25
µA
µA
mA
V
CC
CC
CC
IIL
Input Current LOW
= Max, VIL = 0.5V
−200
−150
IOS
Output Short Circuit Current
Terminated Output Voltage
Output Balance
= Max, VO = 0V (Note 4)
−50
2.0
VT, V
VT–V
See Figure 1
T
T
0.4
3.0
0.4
100
V
V
V
OS, V
Output Offset Voltage
Output Offset Balance
Output Leakage Current
V
OS
OS
OS–V
V
IX
T
= 25˚C
µA
A
<
<
−0.25V VX 5.5V
VCC = 5.5V,
ICC
Supply Current
(Both Drivers)
All input at 0V,
No Load
45
65
mA
Note 2: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices
should be operated at these limits. The tables of “Electrical Characteristics provide conditions for actual device operation.
Note 3: Unless otherwise specified min/max limits apply across the −55˚C to +125˚C temperature range for the DS9638M and across the 0˚C to +70˚C range for
the DS9638C. All typicals are given for V
= 5V and T = 25˚C.
CC
A
Note 4: All currents into the device pins are positive; all currents out of the device pins are negative. All voltages are referenced to ground unless otherwise
specified.
Note 5: Only one output at a time should be shorted.
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2
Switching Characteristics
VCC = 5.0V, TA = 25˚C.
Symbol
tPHL
tPLH
tf
Parameter
Conditions
CL = 15 pF
Min
Typ
10
Max
20
Units
ns
Propagation Delay
RL = 100Ω, See Figure 2
10
20
ns
Fall Time, 90%–10%
Rise Time, 10%–90%
Skew Between Outputs
A/A and B/B
10
20
ns
tr
10
20
ns
t
PO–tPO
1.0
ns
00962202
FIGURE 1. Equivalent Circuit
DC Test Circuit
00962203
FIGURE 2. Terminated Output Voltage and Output Balance
3
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DC Test Circuit (Continued)
00962205
00962204
Note 6: The pulse generator has the following characteristics:
includes probe and jig capacitance.
C
L
PRR = 500 kHz, t = 100 ns,
W
t
r
≤ 5.0 ns, Z = 50Ω.
O
FIGURE 3. AC Test Circuit and Voltage Waveform
00962206
00962207
FIGURE 4. Typical Delay Characteristics
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4
Physical Dimensions inches (millimeters) unless otherwise noted
Ceramic Dual-In-Line Package (J)
Order Number DS9638MJ/883
NS Package Number J08A
Ceramic Dual-In-Line Package (M)
Order Number DS9638CM
NS Package Number M08A
5
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
Molded Dual-In-Line Package (N)
Order Number DS9638CN
NS Package Number N08E
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves
the right at any time without notice to change said circuitry and specifications.
For the most current product information visit us at www.national.com.
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