Electronic Components Datasheet Search |
|
ICL3310ECA-T Datasheet(PDF) 4 Page - Intersil Corporation |
|
ICL3310ECA-T Datasheet(HTML) 4 Page - Intersil Corporation |
4 / 10 page 4 Detailed Description The ICL3310E operates from a single +3V to +5.5V supply, guarantees a 250kbps minimum data rate, requires only four small external 0.1 µF capacitors, features low power consumption, and meets all ElA RS-232C and V.28 specifications. The circuit is divided into three sections: The charge pump, the transmitters, and the receivers. Charge-Pump Intersil’s new ICL3310E utilizes regulated on-chip dual charge pumps as voltage doublers, and voltage inverters to generate ±5.5V transmitter supplies from a VCC supply as low as 3.0V. This allows these devices to maintain RS-232 compliant output levels over the ±10% tolerance range of 3.3V powered systems. The efficient on-chip power supplies require only four small, external 0.1 µF capacitors for the voltage doubler and inverter functions over the full VCC range. The charge pumps operate discontinuously (i.e., they turn off as soon as the V+ and V- supplies are pumped up to the nominal values), resulting in significant power savings. Transmitters The transmitters are proprietary, low dropout, inverting drivers that translate TTL/CMOS inputs to EIA/TIA-232 output levels. Coupled with the on-chip ±5.5V supplies, these transmitters deliver true RS-232 levels over a wide range of single supply system voltages. All transmitter outputs disable and assume a high impedance state when the device enters the powerdown mode (see Table 2). These outputs may be driven to ±12V when disabled. All devices guarantee a 250kbps data rate for full load conditions (3k Ω and 1000pF), VCC ≥ 3.0V, with one transmitter operating at full speed. Under more typical conditions of VCC ≥ 3.3V, RL = 3kΩ, and CL = 250pF, one transmitter easily operates at 900kbps. Transmitter inputs float if left unconnected (there are no pull- up resistors), and may cause ICC increases. Connect unused inputs to GND for the best performance. Receivers The ICL3310E contains standard inverting receivers that three-state via the SHDN control line. Receivers driving powered down peripherals must be disabled to prevent current flow through the peripheral’s protection diodes (see Figures 2 and 3). Transmitter Propagation Delay Transmitter Input to Transmitter Output, CL = 1000pF tPHL Full - 0.6 3.5 µs tPLH Full - 0.7 3.5 µs Receiver Propagation Delay Receiver Input to Receiver Output, CL = 150pF tPHL Full - 0.2 1 µs tPLH Full - 0.3 1 µs Transmitter Output Enable Time From SHDN Rising Edge to TOUT = ±3V 25 - 50 - µs Transmitter Output Disable Time From SHDN Falling Edge to TOUT = ±5V 25 - 600 - ns Transmitter Skew tPHL - tPLH (Note 4) 25 - 100 - ns Receiver Skew tPHL - tPLH 25 - 100 - ns Transition Region Slew Rate RL = 3kΩ to 7kΩ, Measured From 3V to -3V or -3V to 3V VCC = 3.3V, CL = 150pF to 2500pF 25 4 - - V/ µs VCC = 4.5V, CL = 150pF to 2500pF 25 6 - - V/ µs ESD PERFORMANCE RS-232 Pins (TOUT, RIN) Human Body Model 25 - ±15 - kV IEC61000-4-2 Contact Discharge 25 - ±8- kV IEC61000-4-2 Air Gap Discharge 25 - ±15 - kV All Other Pins Human Body Model 25 - ±3- kV NOTE: 4. Transmitter skew is measured at the transmitter zero crossing points. Electrical Specifications Test Conditions: VCC = 3V to 5.5V, C1 - C4 = 0.1µF; Unless Otherwise Specified. Typicals are at TA = 25°C (Continued) PARAMETER TEST CONDITIONS TEMP (°C) MIN TYP MAX UNITS TABLE 2. POWERDOWN AND ENABLE LOGIC TRUTH TABLE SHDN INPUT TRANSMITTER OUTPUTS RECEIVER OUTPUTS MODE OF OPERATION H Active Active Normal Operation L High-Z High-Z Manual Powerdown ICL3310E |
Similar Part No. - ICL3310ECA-T |
|
Similar Description - ICL3310ECA-T |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |