stcd2400 STMicroelectronics, stcd2400 Datasheet - Page 10

• Manufacturer Part Number: stcd2400
• Description: Multichannel Clock Distribution Circuit
• Manufacturer: STMicroelectronics

Device overview
10/39
Table 2.
Table 3.
number
number
Pin
Pin
A1
B1
C1
D1
A2
B2
C2
D2
A3
B3
C3
D3
C1
D1
C2
D2
C3
D3
A1
B1
A2
B2
A3
B3
VTCXO LDO output for external clock source (decouple with a 1 µF capacitor to GND)
MC
VTCXO LDO output for external clock source (decouple with a 1 µF capacitor to GND)
MC
MCLK
name
OPT2
OPT1
MCLK
CLK1
CLK2
name
CLK3
CLK1
CLK2
GND
GND
BYP
EN1
EN2
BYP
V
EN3
EN1
EN2
V
Pin
Pin
Pin functions (STCD22x0, 2-channel)
Pin functions (STCD23x0, 3-channel)
CC
CC
REQ
REQ
Supply voltage (decouple with a 1 µF capacitor to GND)
Master clock input
Optional pin 2. Connect to V
active high/low. Refer to
Bypass capacitor input pin (10 nF capacitor should be connected to GND in
order to improve thermal noise performance)
Supply ground
Master clock request signal (open drain, active low)
Optional pin 1. Connect to V
active high/low. Refer to
Clock output channel - output 1
Clock output channel enable-1 (active high/low OPT1 field programmable)
Clock output channel enable-2 (active high/low OPT2 field programmable)
Clock output channel - output 2
Supply voltage (decouple with a 1 µF capacitor to GND)
Master clock input
Clock output channel enable-3 (active high/low factory laser programmable)
Bypass capacitor input pin (10 nF capacitor should be connected to GND in
order to improve thermal noise performance)
Supply ground
Master clock request signal (open drain, active low)
Clock output channel - output 3
Clock output channel - output 1
Clock output channel enable-1 (active high/low factory laser programmable)
Clock output channel enable-2 (active high/low factory laser programmable)
Clock output channel - output 2
Doc ID 15400 Rev 2
Section 3.2: Enable polarity
Section 3.2: Enable polarity
CC
CC
or GND on PC board to field configure EN2
or GND on PC board to field configure EN1
Description
Description
STCD22x0, STCD23x0, STCD24x0
for detailed information.
for detailed information.