mxl1344a Maxim Integrated Products, Inc., mxl1344a Datasheet
mxl1344a
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mxl1344a Summary of contents
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... LTC1344A, LTC1543, and LTC1544, but for proper operation the entire Maxim chipset must be used without substituting other manu- facturer's parts on a chip-by-chip basis. The MXL1344A is available in a 24-pin SSOP package and is specified for the 0°C to +70°C commercial tem- perature range. LL ...
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Multiprotocol, Software-Selectable Cable Terminator ABSOLUTE MAXIMUM RATINGS All Voltages to GND Unless Otherwise Noted Supply Voltages V ........................................................................-0. .........................................................................+0.3V to -7V EE Logic Input Voltages M0, M1, M2, DCE/DTE, LATCH.............................-0.3V to +6V Termination Network Inputs ...
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Multiprotocol, Software-Selectable (V = +5V -5V +25°C, unless otherwise noted V.11 OR V.35 DIFFERENTIAL-MODE IMPEDANCE vs. TEMPERATURE 106.0 105 -7V CM 105 104 +7V ...
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... V EE works and expensive relays required for multiprotocol termination, saving space and cost. The MXL1344A terminator is designed to form a com- (Figure 3). Each plete +5V cable- or software-selectable multiprotocol DTE/DCE interface port when used with the MXL1543 and MXL1544/MAX3175 transceivers. The MXL1344A terminator can use the V MXL1543 charge pump, simplifying system design ...
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... Figure 3. Block Diagram chipset must be used without substituting other manu- facturer's parts on a chip-by-chip basis. Termination Modes The termination networks in the MXL1344A can be set to one of three modes, V.11, V.35, or high impedance (high-Z). As shown in Figure 4, in V.11 mode, switch S1 _______________________________________________________________________________________ R3 = 127Ω AMMETER = ± ...
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... No Cable 1 Note: Z Indicates high impedance high and 0 = low. Z, V.11, and V.35 refer to termination modes (Figure 4.) The state of the MXL1344A’s mode-select pins, M0, M1, M2, and DCE/DTE determines the mode of each of the six termination networks. Table 1 shows a cross-ref- erence of termination mode and select pin state for ...
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... EE 0.1µ Cable Terminator MXL1344A 21 LATCH SYSTEM PROPRIETARY CONNECTOR CONNECTOR INTERCONNECT DTE CABLE 2 TXD A 14 TXD B 24 SCTE A 11 SCTE B 15 TXC A 12 TXC B 17 RXC A 9 RXC B 3 RXD A ...
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... DCE/DTE interface port when used with the MXL1543 and MXL1544/MAX3175 differential driver/receivers. The MXL1344A terminator is designed to use the V power generated by the MXL1543’s charge pump and will meet all data sheet specifications when connected as illustrated in Figure 5. The mode-selection tables of ...
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... The resistor, although not required, prevents reflections from corrupting transmit- ted data. In Figure 7, the MXL1344A is used to terminate the V.11 receiver on the MXL1543. Internal to the MXL1344A closed and S2 is open to present a 104Ω typical dif- ferential resistance and high-Z common-mode imped- ance ...
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... Most industry-standard V.28 receivers (including the MXL1543) do not require external termination because the receiver includes an internal 5kΩ termination resis- tor. When the MXL1344A is placed in V.28 mode, all six of the termination networks are placed in a high-Z mode. In high-Z mode, the MXL1344A termination net- works will not interfere with the MXL1543's internal 5kΩ ...
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... Figure 11. DTE-to-DCE X.21 Interface ______________________________________________________________________________________ A R5 30kΩ R8 MXL1344A 5kΩ R6 10kΩ 127Ω R7 10kΩ R4 30kΩ B GND DTE MXL1543 MXL1344A MXL1344A 104Ω D1 TXD 104Ω D2 SCTE D3 104Ω R1 TXC 104Ω R2 RXC 104Ω R3 RXD MXL1544/MAX3175 D1 RTS D2 DTR ...
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Multiprotocol, Software-Selectable Cable Terminator Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without ...