DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
The SN75498 9-channel digit driver is similar to the SN75492 but with some key differences:
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• Operates from lower VCC voltages, as low as 2.7 V • MOS- and TTL-compatible inputs • Low standby power |
The
SN75498 is preferred on designs running on 3 batteries and is typically found
in designs without additional segment drivers (TMS0803).
QUICK-LINK to Display Drivers.
TI-2550-II, etc.
| Item | Min | Typ | Max | Unit | Comments |
| VSS | 2.7 | 3.6 | 6.6 | V | |
| IL | 100 | mA | |||
| IL | 0.2 | mA | Output Leakage Current | ||
| VIL | -8.5 | 0 | V | Low-level Input Voltage | |
| VIH | 2.7 | VSS | V | High-level Input Voltage |
The SN75498 was manufactured in a 10 um metal gate Bipolar process (metal width = 0.4 mil / 10 um, metal spacing = 0.4 mil / 10 um).
The die size of the SN75498 is approximately tbd mils * tbd mils / tbd mm * tbd mm.
The SN75498 uses a standard 0.3” wide 20-pin DIP (Dual In-line Package with a 0.1” / 2.54 mm lead pitch).
| Pin | IO | Function | Pin | IO | Function |
| 1 | V | GND | 20 | V | VSS |
| 2 | O | Digit output 1 | 19 | I | Digit input 1 |
| 3 | O | Digit output 2 | 18 | I | Digit input 2 |
| 4 | O | Digit output 3 | 17 | I | Digit input 3 |
| 5 | O | Digit output 4 | 16 | I | Digit input 4 |
| 6 | O | Digit output 5 | 15 | I | Digit input 5 |
| 7 | O | Digit output 6 | 14 | I | Digit input 6 |
| 8 | O | Digit output 7 | 13 | I | Digit input 7 |
| 9 | O | Digit output 8 | 12 | I | Digit input 8 |
| 10 | O | Digit output 9 | 11 | I | Digit input 9 |
If you have additions to the above datasheet please email: joerg@datamath.org.
© Joerg Woerner, February 02, 2001. No reprints
without written permission.
