1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
A A
B B
C C
D D
ZERO REGISTER
MEM ADRS REG
STATE
REGISTER
ADDRESS
BOARD
SELECT
JUMPERS
INSTALL
FOR
CURRENT
OUTPUT
0500067S B
MODEL 7405 STD 8-CHANNEL DAC
SENSORAY COMPANY, INCORPORATED
B
1 2Monday, December 16, 1996
Title
Size Document Number Rev
Date: Sheet of
SHEET 2
500067S2
+12V
-12V
DGND
D[0..11]
AGND
SAMPLE*
A[1..3]
BUSY
S0* S0
S1
S2
BUSY* S3
CLK
SRST*
WSTATE*
IOEXP
AB1 GZERO*
AB2
AB3
AB4
AB5
AB6 GLO*
AB7
IORQ* CLK SRST*
DB0 BUSY
DB1 S0 WSTATE*
DB2 S1 SAMPLE*
DB3 BDSEL* S2 GZERO*
DB4 S3 MARCNT
DB5 SYSRD* ARST* WMAR*
DB6 SYSWR* WLO* WRAM*
DB7 AB0 GSTAT* GLO*
LBUSY* GHI*
AB0 LBUSY
AB1 WHI*
AB2
AB3 S3
AB4
AB5
AB6 ARST*
AB7
GRAM* S3 A0
CLK DB7 BUSY* XA0 A1
DB6 LBUSY* XA1 A2
XA2 A3
GSTAT* T0
T1 T0
CLK T2 T1
WMAR* T3 T2
DB0 D0 SRST* T4 T3
DB1 D1 T5 T4
DB2 D2 T6 T5
DB3 D3 T7 T6
DB4 XA0 T7
DB5 XA1 A1
DB6 XA2 A2
DB7 A3 SAMPLE*
A0 T0
GHI* T1
WHI* T2
T3
T4
T5
A0 D0 T6
DB0 D0 A1 D1 T7
DB1 D1 A2 D2
DB2 D2 A3 D3
DB3 D3 D4 D0
DB4 D4 D5 D1
DB5 D5 D6 D2
DB6 D6 D7 D3
DB7 D7 D4 D0 D8
D5 D1 D9
GLO* D6 D2 D10
WLO* D7 D3 D11
GRAM* A0
WRAM*
A[0..3]
T[0..7]
A[1..3]
D[0..11]
RCO
+5V
+5V
+5V
+5V
+5V
+12V
-12V
+5V
+12V
-12V
+5V
+12V
-12V
U26
74HCT374
3
4
7
8
13
14
17
18
1
11
2
5
6
9
12
15
16
19
D0
D1
D2
D3
D4
D5
D6
D7
OC
CLK
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
U23
74HCT374
3
4
7
8
13
14
17
18
1
11
2
5
6
9
12
15
16
19
D0
D1
D2
D3
D4
D5
D6
D7
OC
CLK
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
U17
74HCT138
1
2
3
6
4
5
15
14
13
12
11
10
9
7
A
B
C
G1
G2A
G2B
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
U13
74HC368
2
4
6
10
12
14
1
15
3
5
7
9
11
13
1A1
1A2
1A3
1A4
2A1
2A2
1G
2G
1Y1
1Y2
1Y3
1Y4
2Y1
2Y2
U27
74HCT688
2
4
6
8
11
13
15
17
3
5
7
9
12
14
16
18
1
19
P0
P1
P2
P3
P4
P5
P6
P7
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
G
P=Q
U21
8416
8
7
6
5
4
3
2
1
23
22
19
18
20
21
9
10
11
13
14
15
16
17
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
CE
OE
WE
D0
D1
D2
D3
D4
D5
D6
D7
U16
74HC174
3
4
6
11
13
14
9
1
2
5
7
10
12
15
D1
D2
D3
D4
D5
D6
CLK
CLR
Q1
Q2
Q3
Q4
Q5
Q6
U19
74HC151
4
3
2
1
15
14
13
12
11
10
9
7
6
5
D0
D1
D2
D3
D4
D5
D6
D7
A
B
C
G
W
Y
U22
74HC163
3
4
5
6
7
10
2
9
1
14
13
12
11
15
A
B
C
D
ENP
ENT
CLK
LOAD
CLR
QA
QB
QC
QD
RCO
U24
74HC163
3
4
5
6
7
10
2
9
1
14
13
12
11
15
A
B
C
D
ENP
ENT
CLK
LOAD
CLR
QA
QB
QC
QD
RCO
P2
*
1
2
3
4
5
13
11
9
7
14
12
10
8
29
27
25
23
21
19
17
15
30
28
26
24
22
20
18
16
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
6
+5V
+5V
DGND
DGND
VBB1
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
WR
RD
IORQ
MEMRQ
IOEXP
MEMEX
RFSH
MSYNC
STAT1
STAT0
BUSAK
BUSRQ
INTAK
INTRQ
WAITRQ
NMIRQ
SYSRESET
PBRESET
CLOCK
CNTRL
PCO
PCI
AGND
AGND
+12V
-12V
VBB2
U20
74HC244
2
4
6
8
11
13
15
17
1
19
18
16
14
12
9
7
5
3
1A1
1A2
1A3
1A4
2A1
2A2
2A3
2A4
1G
2G
1Y1
1Y2
1Y3
1Y4
2Y1
2Y2
2Y3
2Y4
RN1
10K-SIP
1
2
3
4
5
6
7
8
9
10
C55 C59 C50 C51 C56 C60 C53 C48
D1
D2
D3
D4
D5
D6
D7
D8
RN2
10K-SIP
1
2
3
4
5
6
7
8
9
10
C63
10uF,20V
C6 C25 C26 C7 C27 C8 C28 C42 C43 C64
10uF,20V
C5
0.1uF
C14 C33 C34 C15 C35 C16 C36 C49 C41C13
0.1uF
C62
10uF,20V
U28 22V10
1
2
3
4
5
6
7
8
9
10
11
13
23
22
21
20
19
18
17
16
15
14
I1/CLK
I2
I3
I4
I5
I6
I7
I8
I9
I10
I11
I12
O1
O2
O3
O4
O5
O6
O7
O8
O9
O10
E8
E1
E2
E3
E4
E5
E6
E7
U25B
74HC00
4
56
U25A
74HC00
1
23
U25D
74HC00
12
13 11
U25C
74HC00
9
10 8
R77 1K
C47 3300pF 1
0400067
RevB
C52C54C57C58C61
1
EJECTOR