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參數(shù)資料
| 型號(hào)： | S21S07ACTR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | SCSI TERMINATOR |
| 中文描述： | SCSI端接 |
| 文件頁(yè)數(shù)： | 2/10頁(yè) |
| 文件大?。?/td> | 177K |
| 代理商： | S21S07ACTR |
ST21S07A
2/10
PIN CONFIGURATION
PIN DESCRIPTION
PlN N°
(TSSP20)
PlN N°
(SO-16L)
SYMBOL
NAME AND FUNCTION
1
1
TERMPWR1
Termination Power 1
: Should be connected to the SCSI TERMPWR line.
Must be decoupled with either a 2.2
μ
F or 4.7
μ
F. See Fig. 2.
HS-GND
Heat Sink Ground
: Internally connected to the mounting pad. Should be
either grounded or electrically isolated from the other circuitry.
R1
Signal Termination 1
: 110
Termination
R2
Signal Termination 2
: 110
Termination
R3
Signal Termination 3
: 110
Termination
R4
Signal Termination 4
: 110
Termination
R5
Signal Termination 5
: 110
Termination
HS-GND
Heat Sink Ground
: Internally connected to the mounting pad. Should be
either grounded or electrically isolated from the other circuitry.
V
REF1
Reference Voltage 1:
Must be external connected directly to the V
REF2
pin. Must be decoupoled with 4.7
μ
F capacitor as shown in Figure 2
GND
Ground
: Signal groud: 0V
TERMPWR
Termination Power21
: Should be connected to the SCSI TERMPWR line.
Must be decoupled with either a 2.2
μ
F or 4.7
μ
F. See Fig. 2.
HS-GND
Heat Sink Ground
: Internally connected to the mounting pad. Should be
either grounded or electrically isolated from the other circuitry.
R6
Signal Termination 6
: 110
Termination
R7
Signal Termination 7
: 110
Termination
R8
Signal Termination 8
: 110
Termination
R9
Signal Termination 9
: 110
Termination
NC
Not connected:
Do not connect any signal to this pin
HS-GND
Heat Sink Ground
: Internally connected to the mounting pad. Should be
either grounded or electrically isolated from the other circuitry.
V
REF2
Reference Voltage 2:
Must be external connected directly to the V
REF1
pin. Must be decoupoled with 4.7
μ
F capacitor
PD
Power Down
: When tied low, the ST21S07A enters a power down mode.
Contains an internal 60K pull-up. Strap low to deactivate the ST21S07A,
leave open circuited to activate the ST21S07A
2
3
4
5
6
7
8
2
3
4
5
6
9
7
10
11
8
9
12
13
14
15
16
17
18
10
11
12
13
14
19
15
20
16
SO-16L
TSSOP20
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