S21S07ACTR Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
Fabricante
S21S07ACTR Datasheet PDF : 10 Pages
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ST21S07A
PIN CONFIGURATION
SO-16L
TSSOP20
PIN DESCRIPTION
PlN N°
(TSSP20)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
PlN N°
(SO-16L)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SYMBOL
NAME AND FUNCTION
TERMPWR1
HS-GND
R1
R2
R3
R4
R5
HS-GND
VREF1
GND
TERMPWR
HS-GND
R6
R7
R8
R9
NC
HS-GND
VREF2
PD
Termination Power 1: Should be connected to the SCSI TERMPWR line.
Must be decoupled with either a 2.2µF or 4.7µF. See Fig. 2.
Heat Sink Ground: Internally connected to the mounting pad. Should be
either grounded or electrically isolated from the other circuitry.
Signal Termination 1: 110 Ω Termination
Signal Termination 2: 110 Ω Termination
Signal Termination 3: 110 Ω Termination
Signal Termination 4: 110 Ω Termination
Signal Termination 5: 110 Ω Termination
Heat Sink Ground: Internally connected to the mounting pad. Should be
either grounded or electrically isolated from the other circuitry.
Reference Voltage 1: Must be external connected directly to the VREF2
pin. Must be decoupoled with 4.7µF capacitor as shown in Figure 2
Ground: Signal groud: 0V
Termination Power21: Should be connected to the SCSI TERMPWR line.
Must be decoupled with either a 2.2µF or 4.7µF. See Fig. 2.
Heat Sink Ground: Internally connected to the mounting pad. Should be
either grounded or electrically isolated from the other circuitry.
Signal Termination 6: 110 Ω Termination
Signal Termination 7: 110 Ω Termination
Signal Termination 8: 110 Ω Termination
Signal Termination 9: 110 Ω Termination
Not connected: Do not connect any signal to this pin
Heat Sink Ground: Internally connected to the mounting pad. Should be
either grounded or electrically isolated from the other circuitry.
Reference Voltage 2: Must be external connected directly to the VREF1
pin. Must be decoupoled with 4.7µF capacitor
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
2/10
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