DS26S10N [NSC]
Quad Bus Transceiver; 四路总线收发器
| 型号： | DS26S10N |
| 厂家： | 
National Semiconductor |
| 描述： | Quad Bus Transceiver |
| 文件： | 总7页 (文件大小：158K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
May 1999
DS26S10
Quad Bus Transceiver
The DS26S10 features advanced Schottky processing to
minimize propagation delay. The device package also has 2
ground pins to improve ground current handling and allow
close decoupling between VCC and ground at the package.
Both GND 1 and GND 2 should be tied to the ground bus ex-
ternal to the device package.
General Description
The DS26S10 is a quad Bus Transceiver consisting of 4 high
speed bus drivers with open-collector outputs capable of
sinking 100 mA at 0.8V and 4 high speed bus receivers.
Each driver output is connected internally to the high speed
bus receiver in addition to being connected to the package
pin. The receiver has a Schottky TTL output capable of driv-
ing 10 Schottky TTL unit loads.
Features
n Input to bus is inverting on DS26S10
n Quad high speed open-collector bus transceivers
n Driver outputs can sink 100 mA at 0.8V maximum
n Advanced Schottky processing
An active low enable gate controls the 4 drivers so that out-
puts of different device drivers can be connected together for
party-line operation.
The bus output high-drive capability in the low state allows
party-line operation with a line impedance as low as 100Ω.
The line can be terminated at both ends, and still give con-
siderable noise margin at the receiver. The receiver typical
switching point is 2V.
n PNP inputs to reduce input loading
Logic Diagrams
DS2610
DS005802-1
© 1999 National Semiconductor Corporation
DS005802
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Absolute Maximum Ratings (Note *NO
TARGET FOR FNXref NS859*)
DC Input Current
−30 mA to +5 mA
Maximum Power Dissipation (Note 1) at 25˚C
Molded Package
1362 mW
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Operating Conditions
Min
4.75
0
Max
5.25
+70
Units
V
Storage Temperature
−65˚C to +150˚C
−55˚C to +125˚C
−0.5V to +7V
Supply Voltage (VCC
)
Temperature (Ambient) Under Bias
Supply Voltage to Ground Potential
DC Voltage Applied to Outputs for
High Output State
DS26S10
Temperature (TA)
DS26S10
−0.5V to +VCC Max
˚C
Note 1: Derate cavity package 9.6 mW/˚C above 25˚C; derate molded pack-
age 10.9 mW/˚C above 25˚C, derate PLCC package TBD mW/˚C above
25˚C.
DC Input Voltage
−0.5V to +5.5V
200 mA
Output Current, Into Bus
Output Current, Into Outputs
(Except Bus)
30 mA
Electrical Characteristics
(Unless otherwise noted)
Symbol
VOH
VOL
VIH
VIL
Parameter
Conditions
Min
Typ
(Note 3)
3.4
Max
Units
(Note 2)
=
=
Output High Voltage
(Receiver Outputs)
Output Low Voltage
(Receiver Outputs)
Input High Level
(Except Bus)
VCC Min, IOH −1 mA,
Military
2.5
2.7
V
V
V
=
VIN VIL or VIH
Commercial
3.4
=
=
VCC Min, IOL 20 mA,
0.5
=
VIN VIL or VIH
Guaranteed Input Logical High for
All Inputs
2.0
V
V
V
Input Low Level
(Except Bus)
Guaranteed Input Logical Low for
All Inputs
0.8
=
=
VI
Input Clamp Voltage
(Except Bus)
VCC Min, IIN −18 mA
−1.2
=
=
IIL
Input Low Current
(Except Bus)
VCC Max, VIN 0.4V
Enable
Data
−0.36
−0.54
20
mA
mA
µA
µA
µA
=
=
IIH
Input High Current
(Except Bus)
VCC Max, VIN 2.7V
Enable
Data
30
=
=
II
Input High Current
(Except Bus)
VCC Max, VIN 5.5V
100
=
ISC
Output Short-Circuit Current
(Except Bus)
VCC Max, (Note 4)
Military
−20
−18
−55
−60
70
mA
mA
mA
mA
Commercial
DS26S10
DS26S11
=
=
ICCL
Power Supply Current
(All Bus Outputs Low)
VCC Max, Enable GND
45
80
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2
Connection Diagram
Dual-In-Line Package
DS005802-3
Top View
Order Number DS26S10N
See NS Package Number N16A
Plastic Chip Carrier
3
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Bus Input/Output Characteristics
Symbol
Parameter
Conditions
Min Typ(Note
Max
Units
(Note 2)
3)
=
VOL
Output Low Voltage
IOL 40 mA
0.33
0.42
0.51
0.5
0.05
0.8
=
=
VCC Min
IOL 70 mA
V
=
IOL 100 mA
=
IO
Bus Leakage Current
VO 0.8V
−50
100
100
=
VCC Max
µA
µA
V
=
VO 4.5V
=
VO 4.5V
IOFF
VTH
VTL
Bus Leakage Currrent (power
OFF)
=
Receiver Input High Threshold
Bus enable 2.4V
2.25
2.0
2.0
=
VCC Max
=
Receiver Input Low Threshold
Bus enable 2.4V
1.75
=
VCC Min
Note 2: For conditions shown as min or max, use the appropriate value specified under Electrical Characteristics for the applicable device type.
=
Note 3: Typical limits are at V
CC
5V, 25˚C ambient and maximum loading.
Note 4: Not more than one output should be shorted at a time. Duration of the short circuit test should not exceed one second.
Switching Characteristics
=
=
(TA 25˚C, VCC 5V)
Symbol
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tr
Parameter
Conditions
Min
Typ
10
10
14
13
10
10
10
4.0
Max
15
Units
ns
= =
RB 50Ω, CB 50 pF (Note 5)
Data Input to Bus
Data Input to Bus
Enable Input to Bus
Enable Input to Bus
Bus to Receiver Out
Bus to Receiver Out
Bus
DS26S10
DS26S10
15
ns
18
ns
18
ns
=
=
=
RB 50Ω, RL 280Ω, CB 50 pF(Note 5)
15
ns
=
CL 15 pF
15
ns
=
=
RB 50Ω, CB 50 pF (Note 5)
4.0
2.0
ns
tf
Bus
ns
Note 5: Includes probe and jig capacitance.
Truth Tables
DS26S10
Inputs
Outputs
E
L
I
B
H
L
Z
L
L
H
X
L
H
Y
H
Y
=
=
=
=
H
L
X
Y
High voltage level
Low voltage level
Don’t care
Voltage level of bus (assumes control by another bus transceiver)
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4
Typical Application
DS005802-5
AC Test Circuit and Switching Time Waveforms
DS005802-6
Note 1: Includes probe and jig capacitance.
DS005802-7
5
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Typical Performance Characteristics
Typical Bus Output Low Volt-
age vs Ambient Temperature
Receiver Threshold Variation
vs Ambient Temperature
DS005802-8
DS005802-9
Schematic Diagram
DS005802-10
=
V
Pin 16
=
CC
GND 1 Pin 1
=
GND 2 Pin 8
Connect for DS26S10
*Remove R1, Q1, D1 for DS26S10
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6
Physical Dimensions inches (millimeters) unless otherwise noted
Molded Dual-In-Line Package (N)
Order Number DS26S10N
NS Package Number N16A
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