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Hello, Please ask a question about DS8024 Datasheet
# Example questions:
➢ What is the typical slew rate for the vcc pin when transitioning up or down with a capacitance of 300nf?
➢ What is the typical value range for the integrated pullup resistor on the i/o, aux1, and aux2 pins?
➢ What is the maximum frequency for the i/o lines?
| Part No. | DS8024 |
| Manufacturer | MAXIM |
| Size | 356 Kbytes |
| Pages | 15 pages |
| Description | Smart Card Interface |
1. General DC Operating Conditions (VDD = 3.3V, TA = +25°C)
️· Supply Voltage (VDD): Not explicitly stated, but the conditions assume 3.3V.
️· Operating Temperature (TA): +25°C (standard temperature for testing)
2. Clock and Data Signal Parameters
️· Maximum Clock Frequency (fIOMAX): 1 MHz
️· I/O Falling Edge Delay (tD(IO-IOIN)): 200 ns
️· Pullup Pulse Active Time (tPU): 100 ns
️· Input Capacitance (CI): 10 pF
3. I/O, AUX1, AUX2 Pins (Active & Inactive)
️· Output Low Voltage (VOL): 0V to 0.3V
️· Output High Voltage (VOH): 0.75 x VDD up to VDD + 0.1V. (So, roughly 2.475V to 3.43V)
️· Output Rise/Fall Time (tOT): 0.1 μs
️· Input Low Voltage (VIL): -0.3V to +0.8VDD
️· Input High Voltage (VIH): 1.5VDD
️· Input Low Current (IIL): 700 μA (at VIL = 0V)
️· Input High Current (IIH): 20 μA (at VIH = VDD)
️· Integrated Pullup Resistor (RPU): 9-11 kΩ (19 kΩ in one instance)
️· Current When Pullup Active (IPU): -1 mA
4. I/OIN, AUX1IN, AUX2IN Pins (General)
️· Output Low Voltage (VOL): 0V to 0.3V
️· Output High Voltage (VOH): 0.75 x VDD up to VDD + 0.1V.
️· Output Rise/Fall Time (tOT): 0.1 μs
️· Input Low Voltage (VIL): -0.3V to +0.8VDD
️· Input High Voltage (VIH): 1.5VDD
️· Input Low Current (IIL): 600 μA (at VIL = 0V)
️· Input High Current (IIH): 10 μA (at VIH = VDD)
️· Integrated Pullup Resistor (RPU): 9-11 kΩ
️· Current When Pullup Active (IPU): -1 mA
Key Takeaways and Observations:
️· Pullup Resistors: These pins have integrated pullup resistors, which is important for signal integrity and power saving when the pins are not actively driven.
️· Voltage Levels: The input/output voltage levels are tightly coupled to the supply voltage (VDD), making the interface relatively straightforward to interface with.
️· Timing Requirements: The timing specifications (tD(IO-IOIN), tPU, tIT) are critical for ensuring reliable communication.
️· Input Currents: The specified input currents, both high and low, define how much current the interface is consuming.
️· Note 3: Keep in mind that "Note 3" will clarify some of the testing and operational conditions.
1. General DC Operating Conditions (VDD = 3.3V, TA = +25°C)
️· Supply Voltage (VDD): Not explicitly stated, but the conditions assume 3.3V.
️· Operating Temperature (TA): +25°C (standard temperature for testing)
2. Clock and Data Signal Parameters
️· Maximum Clock Frequency (fIOMAX): 1 MHz
️· I/O Falling Edge Delay (tD(IO-IOIN)): 200 ns
️· Pullup Pulse Active Time (tPU): 100 ns
️· Input Capacitance (CI): 10 pF
3. I/O, AUX1, AUX2 Pins (Active & Inactive)
️· Output Low Voltage (VOL): 0V to 0.3V
️· Output High Voltage (VOH): 0.75 x VDD up to VDD + 0.1V. (So, roughly 2.475V to 3.43V)
️· Output Rise/Fall Time (tOT): 0.1 μs
️· Input Low Voltage (VIL): -0.3V to +0.8VDD
️· Input High Voltage (VIH): 1.5VDD
️· Input Low Current (IIL): 700 μA (at VIL = 0V)
️· Input High Current (IIH): 20 μA (at VIH = VDD)
️· Integrated Pullup Resistor (RPU): 9-11 kΩ (19 kΩ in one instance)
️· Current When Pullup Active (IPU): -1 mA
4. I/OIN, AUX1IN, AUX2IN Pins (General)
️· Output Low Voltage (VOL): 0V to 0.3V
️· Output High Voltage (VOH): 0.75 x VDD up to VDD + 0.1V.
️· Output Rise/Fall Time (tOT): 0.1 μs
️· Input Low Voltage (VIL): -0.3V to +0.8VDD
️· Input High Voltage (VIH): 1.5VDD
️· Input Low Current (IIL): 600 μA (at VIL = 0V)
️· Input High Current (IIH): 10 μA (at VIH = VDD)
️· Integrated Pullup Resistor (RPU): 9-11 kΩ
️· Current When Pullup Active (IPU): -1 mA
Key Takeaways and Observations:
️· Pullup Resistors: These pins have integrated pullup resistors, which is important for signal integrity and power saving when the pins are not actively driven.
️· Voltage Levels: The input/output voltage levels are tightly coupled to the supply voltage (VDD), making the interface relatively straightforward to interface with.
️· Timing Requirements: The timing specifications (tD(IO-IOIN), tPU, tIT) are critical for ensuring reliable communication.
️· Input Currents: The specified input currents, both high and low, define how much current the interface is consuming.
️· Note 3: Keep in mind that "Note 3" will clarify some of the testing and operational conditions.
| Part No. | DS8024 |
| Manufacturer | MAXIM |
| Size | 356 Kbytes |
| Pages | 15 pages |
| Description | Smart Card Interface |
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