Electronic Components Datasheet Search |
|
MAX3314ESA Datasheet(PDF) 4 Page - Maxim Integrated Products |
|
MAX3314ESA Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 6 page Detailed Description RS-232-Compatible Drivers The transmitter is an inverting level translator that con- verts CMOS-logic levels to EIA/TIA-232-compatible lev- els. It guarantees data rates up to 460kbps with worst-case loads of 3k Ω in parallel with 1000pF. When SHDN is driven low, the transmitter is disabled and put into 3-state mode. The transmitter input does not have a pull-up resistor. Connect to ground if unused. RS-232-Compatible Receivers The MAX3314’s receiver converts RS-232 signals to CMOS-logic output levels. The receiver is rated to sig- nals up to ±25V. The MAX3314’s receiver will remain active during shutdown mode. MAX3314 Shutdown Mode In shutdown mode, the transmitter output is put into high impedance. This reduces the supply current to 1µA. The time required to exit shutdown is less than 2.5µs. Table 1 is the shutdown logic truth table. Applications Information Capacitor Selection The capacitor type used is not critical for proper opera- tion; either polarized or nonpolarized capacitors are acceptable. If polarized capacitors are used, connect polarity as shown in the Typical Operating Circuit. Bypass VCC and V- to ground with at least 0.1µF. Transmitter Output When Exiting Shutdown Figure 1 shows the transmitter output when exiting shut- down mode. The transmitter is loaded with 3k Ω in par- allel with 1000pF. The transmitter output displays no ringing or undesirable transients as the MAX3314 comes out of shutdown. Note that the transmitter is enabled only when the magnitude of V- exceeds approximately -3V. High Data Rates The MAX3314 maintains minimum RS-232-compatible ±3.7V transmitter output voltage even at high data rates. Figure 2 shows a transmitter loopback test circuit. Figure 3 shows the loopback test result at 120kbps, and Figure 4 shows the same test at 250kbps. Chip Information TRANSISTOR COUNT: 128 460kbps, 1µA, RS-232-Compatible Transceiver 4 _______________________________________________________________________________________ SHDN TRANSMITTER OUTPUT RECEIVER OUTPUT L High-Z Active H Active Active Table 1. Shutdown Logic Truth Table Figure 1. Transmitter Output When Exiting Shutdown or Powering Up 1 µs/div SHDN TOUT 5V/div 0 1.5V/div 0 TIN = GND TIN = VCC Figure 2. Loopback Test Circuit 0.1 µF SHDN TOUT RIN TIN ROUT VCC GND 5k Ω +5V MAX3314 CAPACITORS MAY BE POLARIZED OR NONPOLARIZED. 0.1 µF -5V 1000pF V- |
Similar Part No. - MAX3314ESA |
|
Similar Description - MAX3314ESA |
|
|
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 |