73M1866B-KEYCHN Maxim Integrated Products, 73M1866B-KEYCHN Datasheet - Page 15
73M1866B-KEYCHN
Manufacturer Part Number
73M1866B-KEYCHN
Description
BOARD KEYCHAIN INF DANUBE EVM
Manufacturer
Maxim Integrated Products
Datasheets
1.73M1866B-KEYCHN.pdf
(88 pages)
2.73M1866B-KEYCHN.pdf
(14 pages)
3.73M1866B-KEYCHN.pdf
(15 pages)
4.73M1866B-KEYCHN.pdf
(13 pages)
Specifications of 73M1866B-KEYCHN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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DS_1x66B_001
2.6
Rev. 1.6
Number
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
Pin
The exposed bottom pad is not intended for thermal relief (heat dissipation) and should not be
soldered to the PCB. Soldering of the exposed pad could also compromise electrical
isolation/insulation requirements for proper voltage isolation. Avoid any PCB traces or through-hole
vias on the PCB beneath the exposed pad area.
Requisite Use of Exposed Bottom Pad on 73M1866B and 73M1966B QFN
Packages
VND
INT
SCLK
CS
DR
SRE
SRB
VBG
ACS
VNS
VPS
RXP
RXM
TXM
DCD
DCS
DCG
DCI
RGN
RGP
OFH
M20PB
VNX
SCP
MID
VPX
Pin Name
PWRO Analog positive supply voltage (output)
Type
GND
GND
GND
PWR
I/O
I/O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
I
Negative digital ground
Interrupt / ring detect (active low – open drain)
SPI clock
SPI chip select (active low)
PCM transmit data sent to the D to A
Voltage regulator sense
Voltage regulator drive
VBG bypass, connect to 0.1μF capacitor to VNS
AC current sense
Analog negative supply voltage
Receive plus – signal input
Receive minus – signal input
Transmit Minus
DC loop output
DC loop current sense
DC loop control
DC loop input
Ring detect negative voltage input
Ring detect positive voltage input
Off-hook control
Test pin. Connect to VNX.
Negative supply voltage
Positive side of the secondary pulse transformer winding
Charge pump midpoint
Supply from the barrier
–
transhybrid cancellation output
Description
73M1866B/73M1966B Data Sheet
15
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