HA12187FP
Bus Interface Driver/Receiver IC
ADE-207-174A (Z)
2nd Edition Jun. 1999
Description
The HA12187FP was developed to be used as a bus interface driver/receiver IC in automotive audio equipment controllers. It implements a two-wire serial bus.
Functions
•Two-input OR circuit
•Input comparator circuit
•Current output driver circuit
•Receiver input comparator circuit
•Receiver output circuit
•Standby circuit
Features
•Supports two data inputs (Pins 1 and 3 are the input pins)
•Comparators with hysteresis characteristics were adopted for the inputs
•Current drive output drivers adopted (Output current: 3.8 mA typical)
•Comparators with hysteresis characteristics were adopted for the receivers
•Wide receiver common-mode input operating range (Common-mode input operating range: 0 to 5 V typical)
•The driver output and the receiver input can withstand high voltages (Maximum rating: 18 V)
•Standby function (The IC enters standby mode when pin 8 goes low)
•Operating power-supply voltage range: 5 V ±0.5 V
HA12187FP
Block Diagram
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VCC |
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7 |
S1 |
1 |
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Driver output |
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– |
(current) |
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BUS (+) |
S2 |
3 |
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6 |
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8 |
BIAS |
5 |
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BUS (–) |
R 2 |
Receiver |
– |
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output |
COM |
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+ |
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Rev.2, Jun. 1999, page 2 of 23
HA12187FP
Pin Functions
Pin No. |
Symbol |
Function |
Equivalent Circuit |
1 |
S1 |
Data input |
1 |
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20 k |
2 |
R out |
Receiver output |
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SW |
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2 |
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100 |
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SW |
3 S2 Data input
3
20k
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4 |
GND |
GND |
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5BUS (–) Bus output (–) Receiver input (–)
6BUS (+) Bus output (+) Receiver input (+)
SW |
I |
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Receiver input (+) |
6 |
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VREF |
Receiver input (–) 5
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7 |
VCC |
Power supply |
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8 |
STB |
Standby control input |
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8
20 k
100 k
Rev.2, Jun. 1999, page 3 of 23
HA12187FP
Absolute Maximum Ratings (Ta = 25°C)
Item |
Symbol |
Ratings |
Unit |
Notes |
Power-supply voltage |
VCC |
7 |
V |
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Allowable power dissipation |
Pd |
400 |
mW |
Ta ≤ 85°C |
Operating temperature |
Topr |
–40 to 85 |
°C |
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Storage temperature |
Tstg |
–55 to 125 |
°C |
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Input voltage |
Vin |
–1.0 to 6.7 |
V |
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Bus input voltage |
Bus |
18 |
V |
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Note: Recommended operating power supply voltage range: 5 V ±0.5 V
Rev.2, Jun. 1999, page 4 of 23
HA12187FP
Electrical Characteristics (VCC = 5.0 V, Ta = 25°C)
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Test |
Test |
Item |
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Symbol |
Min |
Typ |
Max |
Unit |
Test Conditions |
Pin |
Circuit |
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S1 |
High-level input |
VIHS1 |
3.5 |
— |
— |
V |
V1 = 0 V |
→ 5 V, V3 = 0 V |
1 |
Figure 1 |
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voltage |
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With the potential |
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difference between pin 5 |
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and pin 6 120 mV or more |
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Low-level input |
VILS1 |
— |
— |
1.5 |
V |
V1 = 5 V |
→ 0 V, V3 = 0 V |
1 |
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voltage |
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With the potential |
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difference between pin5 |
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and pin 6 20 mV or less |
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High-level input |
IIHS1 |
— |
— |
1 |
µA |
V1 = 5 V, V3 = 0 V |
1 |
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current |
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Low-level input |
IILS1 |
— |
— |
1 |
µA |
V1 = 0 V, V3 = 0 V |
1 |
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current |
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S2 |
High-level input |
VIHS2 |
3.5 |
— |
— |
V |
V3 = 0 V |
→ 5 V, V1 = 0 V |
3 |
Figure 1 |
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voltage |
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With the potential |
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difference between pin 5 |
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and pin 6 120 mV or more |
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Low-level input |
VILS2 |
— |
— |
1.5 |
V |
V3 = 5 V |
→ 0 V, V1 = 0 V |
3 |
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voltage |
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With the potential |
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difference between 5 and |
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pin 6 20 mV or less |
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High-level input |
IIHS2 |
— |
— |
1 |
µA |
V1 = 0 V, V3 = 5 V |
3 |
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current |
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Low-level input |
IILS2 |
— |
— |
1 |
µA |
V1 = 0 V, V3 = 0 V |
3 |
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current |
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Driver |
High-level |
IOH |
3.0 |
3.8 |
4.8 |
mA |
IOH = | VOHD+ – VOHD– | / 62 Ω |
5, 6 |
Figure 1 |
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output current |
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Low-level output |
IOL |
— |
— |
1 |
µA |
Pin 5 voltage = V OP– |
5, 6 |
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leakage current |
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IOL = | VOP+ – VOP– | / RI |
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Reference |
VOP+ |
2.3 |
2.5 |
2.7 |
V |
V1 = 0 V, V3 = 0 V |
6 |
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operating |
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voltage (+) |
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Reference |
VOP– |
2.3 |
2.5 |
2.7 |
V |
V1 = 0 V, V3 = 0 V |
5 |
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operating |
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voltage (–) |
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Current drain 1 |
ICCH |
5.5 |
7.3 |
9.5 |
mA |
V1 = 5 V, V3 = 0 V |
7 |
Figure 1 |
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Current drain 2 |
ICCL |
1.7 |
2.2 |
2.7 |
mA |
V1 = 0 V, V3 = 0 V |
7 |
Figure 1 |
Rev.2, Jun. 1999, page 5 of 23
HA12187FP
Electrical Characteristics (VCC = 5.0 V, Ta = 25°C) (cont)
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Test |
Test |
Item |
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Symbol |
Min |
Typ |
Max |
Unit |
Test Condition |
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Circuit |
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Recei |
High-level input |
VIH1 |
— |
80 |
120 |
mV |
V6 = 0 |
→ |
5 V, pin 2 = 4 V |
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2 |
Figure 2 |
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voltage (1) |
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or more, V1 = 0V, V3 = 0V, |
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V5 = VOP–, VIH1 = V6 – V5 |
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Low-level input |
VIL1 |
20 |
45 |
— |
mV |
V6 = 5 |
→ |
0 V, pin 2 = 1 V |
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Figure 2 |
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voltage (1) |
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or less, V1 = 0 V, V3 = 0 V, |
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V5 = VOP–,VIL1 = V6 – V5 |
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Input hysteresis |
VIHYS1 |
10 |
35 |
60 |
mV |
VIHYS1 = VIH1 – VIL1 |
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voltage (1) |
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High-level |
VIHCOM |
4.5 |
— |
— |
V |
V5 = 0 |
→ |
5 V, pin 2 = 4 V |
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5 |
Figure 2 |
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common-mode |
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or more, V1 = 0 V, V3 = 0 |
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input voltage |
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V, V6 – V5 = 120 mV |
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Low-level |
VILCOM |
5 |
— |
— |
V |
V5 = 0 |
→ |
5 V, pin 2 = 1 V |
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5 |
Figure 2 |
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common-mode |
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or less, V1 = 0 V, V3 = 0 V, |
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input voltage |
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V6 – V5 = 20 mV |
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Receiver input |
RI |
25 |
35 |
45 |
kΩ |
V1 = 0 V, |
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5, 6 |
Figure 3 |
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resistance*1 |
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RI = |
0.6V |
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I1− I2 |
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High-level |
VOH |
4.5 |
— |
— |
V |
V1 = 5 V, V3 = 0 V |
2 |
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Figure 1 |
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output voltage |
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Low-level output |
VOL |
— |
— |
1.0 |
V |
V1 = 0 V, V3 = 0 V |
2 |
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Figure 1 |
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voltage |
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Power supply off output |
IOLEAK |
— |
— |
1 |
µA |
V CC off, V8 = 0 V, V6 = 5 V, |
5, 6 |
Figure 4 |
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leakage current |
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V1 = 0 V, V3 = 0 V, SW1 |
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on |
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STB on voltage |
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VSTBon |
— |
— |
1.5 |
V |
V8 = 5 |
→ |
0 V, V1 = 5 V, V8 |
7 |
Figure 4 |
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when ICC ≤ |
20 µA |
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STB off voltage |
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VSTBoff |
3.5 |
— |
— |
V |
V8 = 0 |
→ |
5 V, V1 = 5 V, V8 |
7 |
Figure 4 |
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when ICC ≥ |
4.5 mA |
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Standby mode current |
ICCstb |
— |
10 |
20 |
µA |
V1 = 5 V, V3 = 0 V, V8 = 0 |
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Figure 4 |
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drain |
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V |
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Standby mode leakage |
Istb-Leak |
— |
— |
1 |
µA |
V1 = 5 V, V3 = 0 V, V8 = 0 |
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5, 6 |
Figure 4 |
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current |
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V, V6 = 5 V, SW1 on |
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Delay time (L → |
H) |
DLY1 |
— |
600 |
800 |
nS |
See the operating |
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Figure 5 |
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waveform figure |
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Delay time (H → |
L) |
DLY2 |
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450 |
800 |
nS |
See the operating |
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Figure 5 |
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waveform figure |
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Note: 1. I1 is the measured current when V6 = (VOP+) + 0.3 V, and I2 is the measured current when V6 = (VOP+) – 0.3 V.
Rev.2, Jun. 1999, page 6 of 23
HA12187FP
Test Circuits
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V8 |
A |
A |
0.1 µ |
VCC |
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5 V |
5 V |
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8 |
7 |
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V1 |
A |
1 |
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6 |
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2 |
HA12187FP |
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62 Ω |
V |
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V |
47 k |
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20 p |
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5 |
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A |
3 |
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V |
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V3 |
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0 V |
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4 |
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Test Circuit 1
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V8 |
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0.1 µ |
VCC |
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5 V |
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5 V |
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8 |
7 |
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V1 |
1 |
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0 V |
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6 |
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2 |
HA12187FP |
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62 Ω |
V6 |
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V |
47 k |
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V |
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20 p |
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5 |
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3 |
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V5 |
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V3 |
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0 V |
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4 |
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Test Circuit 2
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V8 |
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0.1 µ |
VCC |
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5 V |
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5 V |
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8 |
7 |
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V1 |
1 |
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6 |
A |
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2 |
HA12187FP |
62 Ω |
V6 |
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V |
47 k |
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20 p |
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5 |
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V3 |
3 |
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0 V |
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4 |
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Test Circuit 3
Rev.2, Jun. 1999, page 7 of 23