DS2107AS Maxim Integrated Products, DS2107AS Datasheet
DS2107AS
Manufacturer Part Number
DS2107AS
Description
SCSI TERMINATOR
Manufacturer
Maxim Integrated Products
Datasheet
1.DS2107AS.pdf
(7 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DS2107AS
Manufacturer:
SPANSION
Quantity:
77
Part Number:
DS2107AS
Manufacturer:
DALLAS
Quantity:
20 000
FEATURES
DESCRIPTION
The SCSI-2 standard recommends the use of active ter-
minations at both ends of every cable segment in a
SCSI system with single-ended drivers and receivers.
The DS2107A SCSI Terminator, which is fully compliant
with the standard, enables the designer to gain the
benefits of active termination: greater immunity to volt-
age drops on the TERMPWR (TERMination PoWeR)
Fully compliant with SCSI and SCSI-2 standards
Backward compatible to the DS2107S
Provides active termination for 9 signal lines
Laser-trimmed 110 ohm termination resistors have
1% tolerance
Low dropout voltage
Power-down mode isolates termination resistors from
the bus
Handles actively negated SCSI signals
Onboard thermal shutdown circuitry
16-pin plastic SOIC (DS2107AS) and 20-pin plastic
thin SSOP (DS2107AE)
PIN ASSIGNMENT
ACTUAL FOOTPRINT SIZE
line, enhanced high-level noise immunity, intrinsic
TERMPWR decoupling, and very low quiescent current
consumption. The DS2107A integrates a regulator and
nine precise switched 110 ohm termination resistors
into a monolithic IC.
TERMPWR1
TERMPWR1
.41”
HS–GND
HS–GND
VREF1
VREF1
GND
GND
DS2107AS
R1
R2
R3
R4
R5
R1
R2
R3
R4
R5
DS2107AE 20-Pin TSSOP (173 mil)
DS2107AS 16-Pin SOIC (300 mil)
.41”
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
10
SCSI Terminator
.27”
20
19
18
17
16
15
14
13
12
16
15
14
13
12
10
11
11
9
DS2107AE
DS2107A
PD
VREF2
NC
R9
R8
R7
R6
HS–GND
TERMPWR2
.26”
HS–GND
PD
VREF2
NC
R9
R8
R7
R6
TERMPWR2
022698 1/7
DS2107A
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