My_work_Sample_ver1

Ongoing

STD My_work_Sample_ver1

Communication

Communication_Module

Analog

License: Public Domain

Mode:

Editors' pick

Update time： 2024-12-17 14:41:32

Creation time： 2024-10-26 09:59:46

Description

This is a home project and the board is an old public phone circuit.

of course, there are other boards inside phone cases, but I have just two of them. this is the slave board of the two.

I accidentally funded them and started to reverse (back) engineering to make them my work sample.

I finished reverse engineering and schematic design and I've started PCB design.

Here is a brief description of what are the ICs on this board.

CMX605D4: an integrated telecom tone generator and DTMF encoder/decoder designed for ISDN interfaces, Wireless Local Loop, and analog to Digital Phone Conversion systems.

CMX631AD4: a low-power, system-selectable Subscriber Pulse Metering (SPM) detector that indicates the presence of both 12kHz or 16kHz telephone call-charge frequencies on a telephone line.

74HC273D: a high-speed CMOS OCTAL D-TYPE FLIP FLOP fabricated with silicon gate C2MOS technology.

and other ICs.

Design Drawing

schematic diagram

（ 1 / ）

U20, U9
Open in Editor
U2,U6,U8
Open in Editor
U13,15,U17
Open in Editor
U16, Switch
Open in Editor
U10, U11
Open in Editor
U1,U12,U19,PH
Open in Editor
U14,U7
Open in Editor
U5,U3,transformers
Open in Editor

PCB

（ 1 / ）

PCB_My_work_Sample_ver1
Open in Editor

The preview image was not generated, please save it again in the editor.

BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	32.768kHz	X1	OSC-TH_BD1.0-P0.50	1	C368784
2	SL05N06Z	Q1,Q17,Q18,Q23	SOT-89-3_L4.5-W2.5-P1.50-LS4.0-BR-1	4	C5122580
3	HSK5P10	Q2,Q9,Q13,Q14,Q10,Q12,Q28	SOT-89-3_L4.3-W2.3-P1.50-LS4.3-BR	7	C28314511
4	0.1u	C5,C6,C11,C13,C14,C15,C17,C18,C19,C21,C22,C25,C27,C28,C31,C32,C33,C36,C37,C38,C39,C40,C41,C44,C45,C46,C49,C50,C54,C55,C56,C57,C58,C59,C62,C65,C66,C67,C69,C70,C71,C72,C73,C74,C77,C79,C81,C82,C83,C84,C86,C87,C88,C90,C91,C93,C94,C96,C97,C103,C106,CB9,CB20,CB13,CB17,CB19,CB14,CB16,C95,CB5,CB1,CB10,CB11,CB12,CB8,CVCC,CB6,CB7,C30,C78,CB15	C0805	81
5	100uH	L1,L2	IND-TH_BD10.0-P5.00-D0.7	2	C72630
6	1m	R7,R9	R0805	2
7	74HC04	U15	SOIC-14_L8.7-W3.9-P1.27-LS6.0-BL	1	C86613
8	14D471K_C8852	VDR1	RES-TH_L16.5-W5.9-P7.50-D0.8-S3.00	1	C8852
9	1N4148W	D3,D4,D20	SOD-123FL_L2.6-W1.6-LS3.4-RD	3	C129216
10	HFD2/005-M-L2	RLY1	RELAY-TH_HFD2-X-X-L2-X	1	C399485
11	4.7kΩ	RN1	RES-ARRAY-TH_9P-P2.54-D1.0	1	C9112
12	74HC245D	U17,U13	SOIC-20_L12.8-W7.5-P1.27-LS10.3-BL	2	C2675537
13	PZ2.54-2*20	CON6	HDR-TH_40P-P2.54-V-M-R2-C20-S2.54	1	C5224014
14	ZMM3V3_C707189	D5,D6,D7,D8,D9,D10,D11,D17,D18,D19,D22,D2,D21,D23,D24,D25,D26,D27,D28,D29,D30,D31,D32,D33,D34,D35,D36,D1,D13,D14,D15,D38,D39	LL-34_L3.5-W1.5-RD	33	C707189
15	100k	R8,R13,R14,R38,R1,R3,R48,R53,R60,R65,R67,R68,R78,R85,R86,R89,R90,R101,R109	R0805	19
16	1M	R11,R12,R19,R21,R25,R26,R27,R28,R29,R30,R31,R32,R35,R37,R100	R0805	15
17	2.2k	R15,R104,R102	R0805	3
18	470k	R16,R22,R23,R41,R46,R61,R75,R105,R112,R103	R0805	10
19	74HC273D,653	U16	SO-20_L12.8-W7.5-P1.27-LS10.3-BL	1	C9030
20	2N3904(SOT-23)	Q5,2N3904(SOT-23),Q19,Q24,Q26,Q6	SOT-23-3_L2.9-W1.3-P1.90-LS2.4-TR	6	C18536
21	2N7002	Q7,Q8,Q15,Q3,Q22,Q16,Q27	SOT-23_L2.9-W1.3-P0.95-LS2.4-BR	7	C65189
22	5.6k	R17,R18	R0805	2
23	10k	R20,R58,R84,R87,R88,R95,R6,R10	R0805	8
24	10u/ 16v	C12,C16	CAP-D3.0×F1.5	2
25	LED-TH-3mm_R	LED1,LED2	LED-TH_BD3.0_RED	2	C84774
26	2N3906(SOT-23)	Q4,Q21	SOT-23-3_L2.9-W1.6-P1.90-LS2.8-TR-CW	2	C147294
27	36k	R2,R92	R0805	2
28	1k	R33,R34,R47,R51,R62,R73,R80,R81,R91,R113	R0805	10
29	1K	R36	R0805	1
30	820k	R39	R0805	1
31	4.7ohm	R40	R0805	1
32	MSS22D18G2	SW1	SW-TH_MSS22D18GX	1	C431542
33	07D220K_C15157	VDR2	RES-TH_L9.0-W4.5-P5.00-D0.5	1	C15157
34	1N4728A	ZD4,ZD2,ZD1	DO-41_BD2.8-L4.2-P8.00-D0.7-FD	3	C2531
35	W04	BR1	DIO-BG-TH_2W005	1	C2992903
36	4.7u/ 50v	C24	CAP-D3.0×F1.5	1
37	74HC273D,652	U10,U11	SOIC-20_L13.0-W7.6-P1.27-LS10.3-BL	2	C546787
38	PIC16C55A-20/P	U20	PDIP-28_L38.1-W12.7-P2.54-LS15.3-BL	1	C647368
39	1u	C29,C68	CAP-D3.0×F1.5	2
40	18pF	C34,C35	C0805	2
41	1u/50v	C43	CAP-D3.0×F1.5	1
42	HDR-M-2.54_1x2	J5,J3,J4,J1,J2,J6	HDR-M-2.54_1X2	6	C124375
43	22k	R5,R42,R43,R44,R108	R0805	5
44	47k	R45,R49,R98,R57	R0805	4
45	390ohm	R50,R83	R0805	2
46	68k	R52,R54	R0805	2
47	33k	R55	R0805	1
48	220k	R56	R0805	1
49	CMX644AD2	U12	SOIC (D2) 24-PIN	1
50	CMX631AD4	U19	SOIC-16PIN	1
51	3.58MHz	X2,X3,X4	HC-49U (CRYSTAL OSCILLATOR)	3	C368784
52	KH-2501GW-04A-Z	CON1	CONN-TH_4P-P2.50_X8821WV-04-N0SN	1	C5123118
53	KH-2501GW-03A-Z	CON3	CONN-TH_3P-P2.50_HX25003-3A	1	C5123117
54	KH-2501GW-05A-Z	CON5	CONN-TH_5P-P2.50_XH-5A	1	C5123119
55	18p	C52,C53	C0805	2
56	3.3nF	C63	CAP-TH_L7.2-W2.5-P5.00-D0.6	1	C401101
57	10nF	C64	CAP-TH_L10.0-W4.0-P7.50-D0.6	1	C2928848
58	470nF	C85	CAP-TH_L17.0-W7.2-P15.00-D1.2	1	C390147
59	OR-4N35	PH1	DIP-6_L7.3-W6.5-P2.54-LS7.6-BL	1	C575341
60	750k	R59	R0805	1
61	9.1k	R63	R0805	1
62	390k	R64	R0805	1
63	5.1k	R66,R93,R94	R0805	3
64	560ohm	R69	R0805	1
65	130k	R70	R0805	1
66	3.9k	R71	R0805	1
67	3.9K/1%	R72	R0805	1
68	18k	R74	R0805	1
69	39ohm	R76	R0805	1
70	330k	R77,R4	R0805	2
71	2.9M	R79	R0805	1
72	120k	R82	R0805	1
73	16k	R96	R0805	1
74	27k	R97	R0805	1
75	150k	R99	R0805	1
76	5 Pin Transformer	T2,T3,T4	5 PIN TRANSFORMER	3
77	MC14018B	U1	SOIC-16_L9.9-W3.9-P1.27-LS6.1-BL	1	C903924
78	74HC4052D,653	U6,U8	SOIC-16_L9.9-W3.9-P1.27-LS6.0-BL	2	C11350
79	LMV324M	U9	SOIC-14_L8.7-W3.9-P1.27-LS6.0-BL	1	C16417
80	CMX605D4	U14	SOIC-16PIN	1
81	TEA1112T	U7	SOT109-1 (16PIN)	1
82	H2541FV-C1524-2X14P	U21	PDIP-28_L35.6-W17.5-P2.54_ICS-628-T	1	C22387113
83	100nF	C7	CAP-TH_L5.5-W2.5-P5.00-D0.50-S2.0	1	C2832508
84	10u	C98,C99	CAP-D3.0×F1.5	2
85	100uF/16v	C104,C105	CAP-TH_BD10.0-P5.00-D1.0-FD	2	C2064
86	1N4007W	D37	SOD-123_L2.8-W1.8-LS3.7-RD	1	C328592
87	100ohm	R106,R107	R0805	2
88	503 D5B	U3	-SOT89-5_N	1
89	74HC14D	U5	SOIC-14_L8.7-W3.9-P1.27-LS6.0-BL	1	C699447
90	HDR-M-2.54_1x2	CON2	JST XH MALE 2 PIN CONNECTOR	1	C124375
91	FC-SCT4.2-1:100	L3(2),L4(1)	SENSOR-SMD_L3.8-W3.5-P2.5	2	C2990850
92	LMV324M/TR	U2	SOP-14_L8.6-W3.9-P1.27-LS6.0-BL	1	C316672
93	10u/16v	C107	CAP-D3.0×F1.5	1
94	33uF	C108	CAP-TH_BD14.5-P7.50-D0.8-FD	1	C1590350
95	330ohm	R24	R0805	1
96	3.3k	R110	R0805	1
97	270k	R111	R0805	1
98	1m	L3	DRUM/BOBBIN CORE INDUCTOR	1
99	100nF	C100	CAP-TH_L7.2-W2.5-P5.00-D0.5	1	C390170
100	100nF	C109,C110	CAP-TH_L9.0-W4.5-P7.50-D0.6	2	C390132
101	3.3nF	C20	CAP-TH_L17.0-W7.2-P15.00-D1.2	1	C401101
102	820pF	C51	CAP-TH_L17.0-W7.2-P15.00-D1.2	1	C2832520
103	15p	C1,C2	C0805	2
104	47u/16v	CBB14	CAP-D3.0×F1.5	1
105	BSN254A	Q20,Q25,Q50	TO93	3	C7435048
106	FC-TCH1065-360Y-T	T1	6 PIN TRANS	1	C29780278
107	220u/16v	U4,U18	CAP-TH_BD6.3-P2.50-D1.0-FD	2	C721061
108	100u/16v	C3	CAP-TH_BD6.0-P2.50-D0.5-FD	1	C2831717
109	10u/50v	C4	CAP-TH_BD4.0-P1.50-D0.8-FD	1	C32856