DS275 Maxim Integrated Products, DS275 Datasheet
DS275
Specifications of DS275
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DS275 Summary of contents
Page 1
... DS275’s static power consumption. This feature is especially important for battery-powered systems such as laptop computers, remote sensors, and portable medical instruments. During an actual communication session, the DS275’s transmitter will use system power (5-12 volts) for positive transitions while still employing the receive signal for negative transitions. ...
Page 2
... Since most asynchronous communication over an RS-232 connection typically remains in a marking state when data is not being sent, the DS275 will not consume system power in this condition. System power would only be used when positive-going transitions are ...
Page 3
... RS-232 COMPATIBILITY The intent of the DS275 is not so much to meet all the requirements of the RS-232 specification as to offer a low-power solution that will work with most RS-232 ports with a connector length of less than 10 feet prime example, the DS275 will not meet the RS-232 requirement that the signal levels be at ...
Page 4
... NOTE: The capacitor stores negative charge whenever the TXD signal from the PC serial port marking data state (a negative voltage that is typically -10 volts). The top DS275’s TX charge reservoir when marking state. The capacitor will discharge to 0 volts when the TXD line ...
Page 5
... SYMBOL MIN TYP V 4.5 5 4.5 5-12 DRV 400 DRV1 I 40 CC1 I 3.8 DRV1 I 40 CC1 I 1.5 DRV2 I 10.0 CC2 I 3.8 DRV2 I 10.0 CC2 I 0.05 DRV3 DS275 MAX UNITS NOTES +0 800 100 A 3 5.0 A 100 A A 10.0 15 5.0 mA 20 ...
Page 6
... See test circuit in Figure 6. loaded ground and OUT -10 volts and see Figure 7. IN OUT HYS TH TL SYMBOL MIN TYP V 3.5 4.0 OTXH V -8.5 -9.0 OTXL I + 0.8 1 1.6 2 0.5 0.8 HYS I -1 loaded ground. OUT DS275 = 10 DRV MAX UNITS NOTES 5 + 1 3.2 mA ...
Page 7
... DYNAMIC OPERATING CURRENT TEST CIRCUIT Figure 4 STATIC OPERATING CURRENT TEST CIRCUIT Figure 5 DRIVER LEAKAGE TEST CIRCUIT Figure DS275 ...
Page 8
... PROPAGATION DELAY TEST CIRCUIT Figure 7 DS275E 14-PIN TSSOP DIM phi DS275 14-PIN MIN MAX - 1.10 0.05 - 0.75 1.05 0.18 0.30 0.09 0.18 4.90 5.10 4.40 NOM 0.65 BSC 0.25 REF 6.25 6.55 0.50 0. ...