ICL3221 INTERSIL [Intersil Corporation], ICL3221 Datasheet
ICL3221
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ICL3221 Summary of contents
Page 1
... Both devices also include noninverting always- active receivers for “wake-up” capability. The ICL3221, ICL3223 and ICL3243, feature an automatic powerdown function which powers down the on-chip power- supply and driver circuits. This occurs when an attached ...
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... TOP VIEW C1 C1 3-2 ICL3221 thru ICL3243 PKG. NO. M16.209 M16.173 M20.209 M18.3 E18.3 M20.173 M20.209 E20.3 M20.173 M16.209 M16.3 E16.3 M16.173 M28.209 M28.3 M28.173 M28.209 M28.3 M28.173 FORCEOFF V CC GND T1 OUT ...
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... T2 8 OUT OUT ICL3232 (PDIP, SOIC, SSOP, TSSOP) TOP VIEW C1 C1- 3 C2 OUT 3-3 ICL3221 thru ICL3243 20 SHDN GND 17 T1 OUT OUT GND ...
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... FORCEOFF Active low to shut down transmitters and on-chip power supply. This overrides any automatic circuitry and FORCEON (see Table 2). FORCEON Active high input to override automatic powerdown circuitry thereby keeping transmitters active. (FORCEOFF must be high). Typical Operating Circuits TTL/CMOS LOGIC LEVELS 3-4 ICL3221 thru ICL3243 FUNCTION outputs. OUTB ICL3221 +3.3V + ...
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... Typical Operating Circuits TTL/CMOS LOGIC LEVELS TTL/CMOS LOGIC LEVELS 3-5 ICL3221 thru ICL3243 (Continued) ICL3222 +3. C2 OUT OUT SHDN GND 16 ICL3223 +3. C1+ ...
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... Typical Operating Circuits TTL/CMOS LOGIC LEVELS 3-6 ICL3221 thru ICL3243 (Continued) ICL3232 +3. C2 OUT OUT GND 0 0 OUT 7 T2 OUT ...
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... Typical Operating Circuits TTL/CMOS LOGIC LEVELS 3-7 ICL3221 thru ICL3243 (Continued) ICL3241 +3. C2 OUTB 20 R2 OUTB 19 R1 OUT OUT OUT ...
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... Typical Operating Circuits TTL/CMOS LOGIC LEVELS CONTROL LOGIC 3-8 ICL3221 thru ICL3243 (Continued) ICL3243 +3. C2 OUTB 19 R1 OUT OUT OUT ...
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... ICL3232) Output Voltage Low I OUT Output Voltage High I OUT AUTOMATIC POWERDOWN (ICL3221, ICL3223, ICL3243 Only, FORCEON = GND, FORCEOFF = V Receiver Input Thresholds to ICL32XX Powers Up (See Figure 6) Enable Transmitters Receiver Input Thresholds to ICL32XX Powers Down (See Figure 6) Disable Transmitters INVALID Output Voltage Low ...
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... Loaded with 2.5mA Each OUT OUT C = 1000pF, One Transmitter Switching L t PHL = 150pF L t PLH PLH PLH C = 200pF to 2500pF 200pF to 1000pF L ICL3221 - ICL3243 ICL3221 - ICL3243 ICL3221 - ICL3232 ICL3241 - ICL3243 ICL3221 - ICL3243 TEMP MIN TYP MAX UNITS Full - 0.6 1.2 ...
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... EN input high (see next section, and Figures 2 and 3). The ICL3221, ICL3223, and ICL3243 utilize a two pin approach where the FORCEON and FORCEOFF inputs determine the IC’s mode. For always enabled operation, = 0V) ...
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... X NOTE: 4. Applies only to the ICL3241 and ICL3243. 3-12 ICL3221 thru ICL3243 are floating (but pulled to GND by the internal receiver pull down resistors), the INVALID logic detects the invalid levels and drives the output low. The power management logic then uses this indicator to power down the interface block. ...
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... RS-232 CHIP MANAGEMENT FIGURE 5. CIRCUIT TO PREVENT AUTO POWERDOWN FOR ICL324X Automatic Powerdown (ICL3221/23/43 Only) Even greater power savings is available by using the devices which feature an automatic powerdown function. When no valid RS-232 voltages (see Figure 6) are sensed on any receiver input for 30 s, the charge pump and transmitters powerdown, thereby reducing supply current ...
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... FIGURE 7. AUTOMATIC POWERDOWN AND INVALID TIMING DIAGRAMS The time to recover from automatic powerdown mode is typically 100 s. Receiver ENABLE Control (ICL3221/22/23/41 Only) Several devices also feature an EN input to control the receiver outputs. Driving EN high disables all the inverting (standard) receiver outputs placing them in a high impedance state ...
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... RS-232 receiver 0 C1 C1- ICL32XX + C2 C2 OUT R OUT EN SHDN FORCEOFF FIGURE 10. TRANSMITTER LOOPBACK TEST CIRCUIT 3-15 ICL3221 thru ICL3243 5V/DIV OUT T1 OUT R1 OUT V - OUT CURRENT) OUT+ 5V/DIV OUT R1 OUT V+ + Interconnection with 3V and 5V Logic C 3 ...
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... OUT OUT 4000 5000 235kbps 120kbps 20kbps 4000 5000 FIGURE 16. SUPPLY CURRENT vs LOAD CAPACITANCE 3.5 NO LOAD ALL OUTPUTS STATIC 3.0 ICL3221 - ICL3232 2.5 2.0 1.5 1.0 0.5 ICL324X 0 2.5 3.0 3.5 4.0 4.5 SUPPLY VOLTAGE (V) FIGURE 17. SUPPLY CURRENT vs SUPPLY VOLTAGE -SLEW +SLEW 5 0 1000 2000 3000 LOAD CAPACITANCE (pF) FIGURE 14. SLEW RATE vs LOAD CAPACITANCE ...
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... METALLIZATION: Type: Metal 1: AISi(1%) Å Thickness: Metal 1: 8k Type: Metal 2: AISi (1%) Å Thickness: Metal 2: 10k SUBSTRATE POTENTIAL (POWERED UP): GND 3-17 ICL3221 thru ICL3243 PASSIVATION: Type: Silox Thickness: 13k TRANSISTOR COUNT: ICL3221: 286 ICL3222: 338 ICL3223: 357 ICL3232: 296 ICL324X: 464 PROCESS: Si Gate CMOS Å ...