DEVICE DESCRIPTION
The SDA24 Schottky Barrier Diode Array is
designed to reduce reflection noise on high
speed parallel data lines.
The device helps suppress transients caused
by transmission line reflections, cross talk and
switching noise.
The SDA24 consists of an array of 12 high
speed Schottky diode pairs suitable for
clamping to VCC and / or GND.
FEATURES
•Reduced reflection noise
•Repetitive peak forward current -
200mA
•12 diode pairs
•SO16 and DIL16 packages
APPLICATIONS
•Termination of data lines
•Protection of memory devices
SCHOTTKY DIODE ARRAY
ISSUE 3 – JANUARY 1998
D01 D02 D03 D04 D05 D06 D07 D08 D09 D10 D11 D12 VCC VCC
GNDGND
SCHEMATIC DIAGRAM
SDA24
4-7
ABSOLUTE MAXIMUM RATING (at Tamb= 25°C unless otherwise stated)*
Steady-State Reverse Voltage 7V
Continuous Forward Current 50mA(1)
170mA(2)
Repetitive Peak Forward Current (3) 200mA(1)
1A(2)
Continuous Total Power Dissipation (4)
(SO and DIL packages)
625mW
Operating Free-air Temperature Range 0 to 70°C
Storage Temperature Range -65 to 150°C
* Stresses beyond those listed above may cause permanent damage to the device. These are
stress ratings only and functional operation of the device at these or any other conditions
beyond those indicated under the recommended operating conditions is not implied.
Exposure to absolute maximum rated conditions for extended periods of time may affect
device reliability.
Note:
(1) Any D terminal from GND or to VCC
(2) Total through all GND or VCC terminals
(3) These values apply for tW=100µs, duty cycle ≤ 20%
(4) For operation above 25°C , derate linearly at the rate of 6.25mW/°C
ELECTRICAL CHARACTERISTICS (at Tamb= 25°C unless otherwise stated)
Single-Diode Operation
PARAMETER SYMBOL MIN. TYP. MAX. UNIT CONDITIONS
Static Forward Voltage VF0.85 1.05 V To VCC , IF=18mA
1.05 1.3 V To VCC , IF=50mA
0.75 0.95 V From GND, IF=18mA
0.95 1.2 V From GND, IF=50mA
Peak Forward Voltage VFM 1.45 V IF=200mA
Static Reverse Current IR6µATo VCC ,VR=7V
5µAFrom GND, VR=7V
Total Capacitance CT616pF V
R=0, f=1MHz
46pF V
R=2V, f=1MHz
Note:
(5)Test conditions and limits apply separately to each of the diodes. The diodes not under test
are open circuited during the measurement of these characteristics.
Multiple-Diode Operation
PARAMETER SYMBOL MIN. TYP. MAX. UNIT CONDITIONS
Internal Crosstalk Current IX0.8 2 mA Total IF=1A (6)
0.02 0.2 mA Total IF=198mA (6)
Note:
(6)IX is measured under the following conditions with one diode static, and all others
switching. Switching diodes: tW=100µs, duty cycle=0.2; static diode; VR=5V. The static diode
input current is the internal crosstalk current IX.
SDA24
4-8
SDA24
IF vs VF Characteristic IF vs VF Characteristic
Low IF vs VF Characteristic
TYPICAL CHARACTERISTICS
SWITCHING CHARACTERISTICS (over operating free-air temperature range)
PARAMETER SYMBOL MIN. TYP. MAX UNIT CONDITIONS
Reverse Recovery Time trr 816nsI
F=10mA
IR(REC)=1mA
IRM(REC) =10mA
RL=100Ω
4-9
SO16
Package Suffix – N16
Top View
CONNECTION DIAGRAMS
DIL16
Package Suffix – D16
Top View
SDA24
Part Number Package Part Mark
SDA24D16 DIL16 SDA24
SDA24N16 SO16N SDA24
ORDERING INFORMATION
4-10
