DS21S07AS/T&R Maxim Integrated Products, DS21S07AS/T&R Datasheet - Page 4

• Manufacturer Part Number: DS21S07AS/T&R
• Description: IC TERMINATOR SCSI 16-SOIC
• Manufacturer: Maxim Integrated Products
• Type: SCSI, LVD, SEr

Specifications of DS21S07AS/T&R

• Number Of Terminations: 9
• Voltage - Supply: 4 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table 1. Pin Description
2, 8, 12,
TSSOP
13–16
3–7,
18
10
11
17
19
20
1
9
PIN
10–13
2–6,
SO
—
14
15
16
1
7
8
9
TERMPWR1
TERMPWR2
HS-GND
NAME
VREF1
VREF2
R1–R9
GND
NC
PD
Termination Power 1. Should be connected to the SCSI
TERMPWR line. Must be decoupled with either a 2.2µF
capacitor or 4.7µF capacitor. See Figure 2.
Heat Sink Ground. Internally connected to the mounting pad.
Should be either grounded or electrically isolated from other
circuitry.
Signal Termination 1–9. 110Ω termination.
Reference Voltage 1. Must be externally connected directly to
the VREF2 pin. Must be decoupled with a 4.7µF capacitor as
shown in Figure 2.
Ground. 0V, signal ground.
Termination Power 2. Should be connected to the SCSI
TERMPWR line. Must be decoupled with either a 2.2µF
capacitor or 4.7µF capacitor. See Figure 2.
No Connection. Do not connect any signal to this pin.
Reference Voltage 2. Must be externally connected directly to
the VREF1 pin. Must be decoupled with a 4.7µF capacitor as
shown in Figure 2.
Active-Low Power-Down. When tied low, the DS21S07A
enters a power-down mode. Contains an internal 50kΩ pullup
resistor. Strap low to deactivate the DS21S07A; leave open
circuited to activate the DS21S07A
4 of 8
FUNCTION