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<<Go Back to Chip Location Reference
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L17, 74HC74 Dual D-Type Positive Edge-Triggered Flip-Flop |
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Pin # |
Pin Description |
Circuit Configuration |
IDM Function |
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1 |
/CD1 |
Driven by (L4-P16)Connected with (L15-P1,9) (L8-P34) (L13-P11) (L17-P13) |
TTL Fuel Delivery |
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2 |
D1 |
Common 5VDC |
Hard-wired to 5VDC |
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3 |
CP1 |
Driven by (L13-P4) |
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4 |
/SD1 |
Common 5VDC |
Hard-wired to 5VDC |
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5 |
Q1 |
NC |
Not Used |
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6 |
/Q1 |
Drives (L15-P12) |
Precondition for MASTER ENABLE |
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7 |
GND |
Common GND |
Power GND for device |
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8 |
/Q2 |
Drives (L15-P13) |
Precondition for MASTER ENABLE |
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9 |
Q2 |
NC |
Not Used |
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10 |
/SD2 |
Common 5VDC |
Hard-wired to 5VDC |
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11 |
CP2 |
Driven by a transistor above L17 |
Current induced driver |
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12 |
D2 |
Common 5VDC |
Hard-wired to 5VDC |
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13 |
/CD2 |
Driven by (L4-P16)Connected with (L15-P1,9) (L8-P34) (L13-P11) (L17-P1) |
TTL Fuel Delivery |
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14 |
VCC |
Common 5VDC |
Power 5VDC for device |