SFFS448 March 2022 ISO7041 , ISO7041-Q1
4.1 16-QSOP (SSOP) Package
Figure 4-1 shows the ISO7041/ISO7041-Q1 pin diagram for 16-QSOP pakcage. For a detailed description of the device pins please refer to the Pin Configuration and Functions section in the ISO7041/ISO7041-Q1 data sheet.
Figure 4-1 Pin Diagram (common for 16-QSOP
Packages)Table 4-2 Pin FMA for Device Pins
Short-Circuited to Ground
| Pin Name | Pin No. | Description of Potential Failure Effect(s) | Failure Effect Class |
|---|---|---|---|
| VCC1 | 1 | No power to the device on side-1. Observe that the absolute maximum ratings for all pins of the device are met; otherwise device damage may be plausible. OUTD state undetermined. | A |
| GND1 | 2 | Device continues to function as expected. | D |
| INA | 3 | Input signal shorted to ground, so output (OUTA) stuck to low. Communication from INA to OUTA corrupted. | B |
| INB | 4 | Input signal shorted to ground, so output (OUTB) stuck to low. Communication from INB to OUTB corrupted. | B |
| INC | 5 | Input signal shorted to ground, so output (OUTC) stuck to low. Communication from INC to OUTC corrupted. | B |
| OUTD | 6 | OUTD stuck low. Data communication from IND to OUTD lost. Device damage possible if IND is driven high for extended period of time. | A |
| EN1 | 7 | Refresh is enabled. | D |
| GND1 | 8 | Device continues to function as expected. Normal operation. | D |
| GND2 | 9 | Device continues to function as expected. Normal operation. | D |
| EN2 | 10 | Refresh is enabled. | D |
| IND | 11 | Input signal shorted to ground, so output (OUTD) stuck to low. Communication from IND to OUTD corrupted. | B |
| OUTC | 12 | OUTC stuck low. Data communication from INC to OUTC lost. Device damage possible if INC is driven high for extended period of time. | A |
| OUTB | 13 | OUTB stuck low. Data communication from INB to OUTB lost. Device damage possible if INB is driven high for extended period of time. | A |
| OUTA | 14 | OUTA stuck low. Data communication from INA to OUTA lost. Device damage possible if INA is driven high for extended period of time. | A |
| GND2 | 15 | Device continues to function as expected. Normal operation. | D |
| VCC2 | 16 | No power to the device on side-2. OUTA/OUTB/OUTC pins state undetermined. | B |
Table 4-3 Pin FMA for Device Pins
Open-Circuited
| Pin Name | Pin No. | Description of Potential Failure Effect(s) | Failure Effect Class |
|---|---|---|---|
| VCC1 | 1 | Operation undetermined. Either device is unpowered and OUTA/OUTB/OUTC=default logic state, OUTD=undetermined or through internal ESD diode on INA/INB/INC pin, device can power up if any IN is driven to logic high. If IN has current sourcing capability to provide regular operating current of device, ESD diode conducts that current and device damage plausible. | A |
| GND1 | 2 | Device gets return ground through pin8. Normal operation. | D |
| INA | 3 | No communication to INA channel possible. OUTA stuck to default state (High for ISO7041/ISO7041-Q1 and Low for ISO7041F/ISO7041F-Q1). | B |
| INB | 4 | No communication to INB channel possible. OUTB stuck to default state (High for ISO7041/ISO7041-Q1 and Low for ISO7041F/ISO7041F-Q1). | B |
| INC | 5 | No communication to INC channel possible. OUTC stuck to default state (High for ISO7041/ISO7041-Q1 and Low for ISO7041F/ISO7041F-Q1). | B |
| OUTD | 6 | State of OUTD undetermined. Data communication from IND to OUTD lost. | B |
| EN1 | 7 | The device outputs are in an undetermined and unknown state. | B |
| GND1 | 8 | Device gets return ground through pin2. Normal operation. | D |
| GND2 | 9 | Device gets return ground through pin15. Normal operation. | D |
| EN2 | 10 | The device outputs are in an undetermined and unknown state. | B |
| IND | 11 | No communication to IND channel possible. OUTD stuck to default state (High for ISO7041/ISO7041-Q1 and Low for ISO7041F/ISO7041F-Q1). | B |
| OUTC | 12 | State of OUTC undetermined. Data communication from INC to OUTC lost. | B |
| OUTB | 13 | State of OUTB undetermined. Data communication from INB to OUTB lost. | B |
| OUTA | 14 | State of OUTA undetermined. Data communication from INA to OUTA lost. | B |
| GND2 | 15 | Device gets return ground through pin9. Normal operation. | D |
| VCC2 | 16 | Device unpowered on side-2 and state of OUTA/OUTB/OUTC undetermined. | B |
Table 4-4 Pin FMA for Device Pins
Short-Circuited to Adjacent Pin
| Pin Name | Pin No. | Shorted to | Description of Potential Failure Effect(s) | Failure Effect Class |
|---|---|---|---|---|
| VCC1 | 1 | GND1 | No power to the device on side-1. Observe that the absolute maximum ratings for all pins of the device are met; otherwise device damage may be plausible. | A |
| GND1 | 2 | INA | Input signal shorted to ground, so output (OUTA) stuck to low. Communication from INA to OUTA corrupted. | B |
| INA | 3 | INB | Communication corrupted for either INA or INB channel. | B |
| INB | 4 | INC | Communication corrupted for either INA or INB channel. | B |
| INC | 5 | OUTD | Communication corrupted for either or both channels. With opposite logic state on both channels, high current can flow between supply and ground and cause possible device damage. | A |
| OUTD | 6 | EN1 | Refresh is disabled if OUTD is a logic high. | A |
| EN1 | 7 | GND1 | Refresh is enabled. | B |
| GND1 | 8 | EN1 | Already considered in above row. | B |
| GND2 | 9 | EN2 | Refresh is enabled. | B |
| EN2 | 10 | IND | Refresh is disabled is IND is a logic high. | B |
| IND | 11 | OUTC | Communication corrupted for either or both channels. With opposite logic state on both channels, high current can flow between supply and ground and cause possible device damage. | A |
| OUTC | 12 | OUTB | Communication corrupted for either or both channels. With opposite logic state on both channels, high current can flow between supply and ground and cause possible device damage. | A |
| OUTB | 13 | OUTA | Communication corrupted for either OUTA or OUTB channel. Device damage possible if INA and INB try to drive opposite logic state for extended duration creating a short between supply and ground on side-2. | A |
| OUTA | 14 | GND2 | OUTA stuck low. Data communication from INA to OUTA lost. Device damage possible if INA is driven high for extended period of time. | A |
| GND2 | 15 | VCC2 | No power to the device on side-2. OUTA/OUTB/OUTC pins state undetermined. | B |
| VCC2 | 16 | GND2 | Already considered in above row. | B |
Table 4-5 Pin FMA for Device Pins Short-Circuited to
supply
| Pin Name | Pin No. | Description of Potential Failure Effect(s) | Failure Effect Class |
|---|---|---|---|
| VCC1 | 1 | No effect. Normal operation. | D |
| GND1 | 2 | This can create potential difference between pin2 and pin8, causing high current to flow in device and potential device damage. | A |
| INA | 3 | INA pin stuck high. Communication corrupted. OUTA state high. | B |
| INB | 4 | INB pin stuck high. Communication corrupted. OUTB state high. | B |
| INC | 5 | INC pin stuck high. Communication corrupted. OUTC state high. | B |
| OUTD | 6 | OUTD stuck high. Data communication from INC to OUTC lost. Device damage possible if IND is driven low for extended period of time. | A |
| EN1 | 7 | Refresh is disabled. | B |
| GND1 | 8 | This can create potential difference between pin2 and pin8, causing high current to flow in device and potential device damage. | A |
| GND2 | 9 | This can create potential difference between pin9 and pin15, causing high current to flow in device and potential device damage. | A |
| EN2 | 10 | Refresh is disabled. | B |
| IND | 11 | IND pin stuck high. Communication corrupted. OUTD state high. | B |
| OUTC | 12 | OUTC stuck high. Communication disrupted. If INC is low for extended duration, OUTC being stuck high creates a short and can damage the device. | A |
| OUTB | 13 | OUTB stuck high. Communication disrupted. If INB is low for extended duration, OUTB being stuck high creates a short and can damage the device. | A |
| OUTA | 14 | OUTA stuck high. Communication disrupted. If INA is low for extended duration, OUTA being stuck high creates a short and can damage the device. | A |
| GND2 | 15 | This can create potential difference between pin9 and pin15, causing high current to flow in device and potential device damage. | A |
| VCC2 | 16 | Device continues to function as expected. Normal operation. | D |