SP504MCF-L Exar Corporation, SP504MCF-L Datasheet - Page 20

• Manufacturer Part Number: SP504MCF-L
• Description: IC, WAN MULTIMODE SERIAL TXRX, MQFP-80
• Manufacturer: Exar Corporation

Specifications of SP504MCF-L

• Device Type: Transceiver
• No. Of Drivers: 7
• Supply Voltage Range: 4.75V To 5.25V
• Driver Case Style: MQFP
• No. Of Pins: 80
• Operating Temperature Range: 0°C To +70°C
• Termination Type: SMD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 9. SP504 Typical Operating Circuit
A — Receiver Tri-State Circuitry & V.35
B — Driver Tri-State circuitry & V.35
terminaiton resistor circuitry for
RxD, RxC & SCT
termination circuitry for TxD,
TxC & ST .
RS-422 Mode
Input Word
0
1
0
0
0
1
0
0
.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com
External
+5V
Latch
Note 1
SCTEN 7
SCT(a) 76
SCT(b) 77
10µF
DM (b) 69
RT (b) 38
DM(a) 68
RD(a) 70
RR(a) 35
RR(b) 36
CS(a) 66
RT (a) 37
RD(b) 71
CS(b) 67
IC(a) 39
IC(b) 40
DCD 19
DSR 78
CTS 80
SCT 79
RxC 20
RxD 1
For V.35 Termination, needs to be connected
for proper V.35 operation. A low on-
resistance (≤1Ω) FET or switch can be used
to connect and disconnect the resistor from
the non-inverting output.
RI 21
1N5819
10
11
12
4
2
9
5
3
25
V
CC
A
20
22µF
V
27
DD
Charge Pump
SP504
26
C1+
(SEE PAGE 12 FOR GROUND PINS)
22µF
C1-
30
C2+
28
22µF
B
V
31
C2-
SS
32
42 ST(a)
44 ST(b)
23 STEN
15 TxC
63 TT(a)
65 TT(b)
14 TxD
61 SD(a)
59 SD(b)
13 DTR
58 TR(a)
56 TR(b)
16 RTS
54 RS(a)
52 RS(b)
17 RL
47 RL(a)
45 RL(b)
24 LL
51 LL(a)
49 LL(b)
22 ST
6 TTEN
22µF
SP504_02_2708
SP504_02_2708
150Ω
150Ω
150Ω
Note 1
Note 1
Note 1