DS2118MB Maxim Integrated Products, DS2118MB Datasheet - Page 7

• Manufacturer Part Number: DS2118MB
• Description: IC TERM SCSI LVD/SE ULT-3 36SSOP
• Manufacturer: Maxim Integrated Products
• Type: SCSI, LVD, SEr

Specifications of DS2118MB

• Number Of Terminations: 9
• Voltage - Supply: 4 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 36-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

PIN DESCRIPTION
RECOMMENDED OPERATING CONDITIONS
Termpower
Voltage
Logic 0
Logic 1
Operating Temperature
22–25, 29–32
4–7, 11–16,
8, 10, 26, 9,
28, 27
PIN
2, 3
17
18
19
20
21
33
34
35
36
1
PARAMETER
SE Mode
LVD Mode
DIFFSENSE DIFFSENSE. Output to drive the SCSI bus DIFFSENS line.
MSTR/SLV
DIFF_CAP
HS GND
NAME
TPWR
VREF
GND
HVD
LVD
RxP,
RxN
ISO
NC
SE
Reference Voltage. 2.85V reference in SE mode and 1.25V reference in
LVD mode; must be decoupled with a 4.7µF cap.
No Connection. Do not connect these pins.
Signal Termination. Connect to SCSI bus signal lines.
Heat Sink Ground. Internally connected to the mounting pad. Should
be grounded.
Isolation. When pulled high, the DS2118M isolates its bus pins (RxP,
FxP) from the SCSI bus.
Ground. Signal ground; 0V.
Master/Slave. Mode-select for the noncontrolling terminator. When
pulled high (MSTR), the DIFFSENSE driver is enabled.
DIFFSENSE Capacitor. Connect 0.1µF capacitor for DIFFSENSE
filter. Input to detect the type of device (differential or single-ended) on
the SCSI bus.
Single-Ended. SE output of DIFFSENSE receiver; indicates SE bus
operation.
Low-Voltage Differential. LVD output of DIFFSENSE receiver;
indicates LVD bus operation.
High-Voltage Differential. HVD output of DIFFSENSE receiver;
indicates HVD bus operation or thermal shutdown.
Termination Power. Connect to the SCSI TERMPWR line and
decouple with 2.2µF capacitor.
V
SYMBOL
V
TPWR(LVD)
TPWR(SE)
V
V
V
AMB
IH
IL
7 of 10
MIN
-0.3
4.0
2.7
2.0
0
FUNCTION
TYP
V
MAX
TPWR
+0.8
5.5
5.5
0.3
70
+
UNITS
°C
V
V
V
V
NOTES