参数资料
型号: DS21S07AS+T&R
厂商: Maxim Integrated Products
文件页数: 4/8页
文件大小: 0K
描述: IC TERMINATOR SCSI 16-SOIC
标准包装: 1,000
类型: SCSI,LVD,SE
端子数: 9
电源电压: 4 V ~ 5.5 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.295",7.50mm 宽)
供应商设备封装: 16-SOIC W
包装: 带卷 (TR)
DS21S087A
4 of 8
Table 1. Pin Description
PIN
TSSOP
SO
NAME
FUNCTION
1
TERMPWR1
Termination Power 1. Should be connected to the SCSI
TERMPWR line. Must be decoupled with either a 2.2
F
capacitor or 4.7
F capacitor. See Figure 2.
2, 8, 12,
18
HS-GND
Heat Sink Ground. Internally connected to the mounting pad.
Should be either grounded or electrically isolated from other
circuitry.
3–7,
13–16
2–6,
10–13
R1–R9
Signal Termination 1–9. 110
termination.
9
7
VREF1
Reference Voltage 1. Must be externally connected directly to
the VREF2 pin. Must be decoupled with a 4.7
F capacitor as
shown in Figure 2.
10
8
GND
Ground. 0V, signal ground.
11
9
TERMPWR2
Termination Power 2. Should be connected to the SCSI
TERMPWR line. Must be decoupled with either a 2.2
F
capacitor or 4.7
F capacitor. See Figure 2.
17
14
NC
No Connection. Do not connect any signal to this pin.
19
15
VREF2
Reference Voltage 2. Must be externally connected directly to
the VREF1 pin. Must be decoupled with a 4.7
F capacitor as
shown in Figure 2.
20
16
PD
Active-Low Power-Down. When tied low, the DS21S07A
enters a power-down mode. Contains an internal 50k
pullup
resistor. Strap low to deactivate the DS21S07A; leave open
circuited to activate the DS21S07A
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