19-1879; Rev 0; 12/00 MAX3170 Evaluation Kit Features The MAX3170 evaluation kit (EV kit) combines Maxim’s multiprotocol clock/data transceiver (MAX3170), control transceiver (MAX3171), and cable terminator (MAX3172) chips. This chipset forms a complete software-selectable data terminal equipment (DTE) or data communications equipment (DCE) interface port. ♦ Industry’s First Single +3.3V Supply Multiprotocol Chipset The MAX3170, MAX3171, and MAX3172 chipset supports V.28 (RS-232), V.11 (RS-449/V.36, EIA-530, EIA530A, X.21), and V.35 protocols. Compliance for NET1, NET2, TBR-1, and TBR-2 has been certified by TUV Telecom Services, Inc. Internal charge pumps allow this kit to operate from a single +3.3V supply. The MAX3170 EV kit was designed to take advantage of the chipset’s flow-through pinout. This kit includes a 40-pin header (logic signals), a female DB25 connector (protocol signals), three SMA connectors (high-speed logic signals), and scope probe connectors for measuring the high-speed data signals (logic and protocol signals). ♦ Industry’s First Multiprotocol Chipset with True Failsafe Receivers ♦ Programmable Transceiver Supports V.28 (RS-232) V.11 (RS-449/V.36, EIA-530, EIA-530A, X.21) V.35 ♦ Certified TBR-1 and TBR-2 Compliant ♦ Certified NET1 and NET2 Compliant ♦ Programmable Cable Termination (MAX3172) ♦ Receiver Control Line Deglitching ♦ Fully Assembled and Tested Ordering Information PART TEMP. RANGE MAX3170EVKIT 0°C to +70°C Component List DESIGNATION C1, C2, C5, C6, C7, C10 C3, C4, C8, C9 QTY 6 4 DESCRIPTION 3.3µF, 10V X7R ceramic capacitors (1206) Taiyo Yuden LMK316BJ335ML 1.0µF, X5R ceramic capacitors (0805) Taiyo Yuden LMK212BJ105MG C11, C12, C13 3 100pF ceramic capacitors (0805) C14, C15, C17 3 0.1µF ceramic capacitors (0805) C16 1 47µF, 6.3V tantalum capacitor AVX TAJD476M006 D1, D2, D3, D5, D6, D9 6 Red LEDs D4, D7, D8, D10, D11, D12 6 Green LEDs DESIGNATION QTY DESCRIPTION D13–D16 4 Yellow LEDs JU1–JU7, JU12 8 3-pin headers JU8–JU11, JU14–JU17, JU19 9 2-pin headers None 17 Shunts J1 1 40-pin header (2×20) 0.1in center J2 1 DB25 right-angle female connector AMP 747846-4 J3, J4, J5 3 R1, R2, R3 3 SMA connectors (PC edge mount) EFJohnson 142-0701-801 49.9Ω ±1% resistors (0805) R8–R23 16 100Ω ±5% resistors (0805) ________________________________________________________________ Maxim Integrated Products 1 For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Evaluates: MAX3170/MAX3171/MAX3172 General Description Evaluates: MAX3170/MAX3171/MAX3172 MAX3170 Evaluation Kit Component List (continued) DESIGNATION QTY DESCRIPTION RXD/TXD, RXC/SCTE, TXC/N/A, N/A/TXC, SCTE/RXC, TXD/RXD, RXDA/TXDA, RXDB/TXDB, RXCA/SCTEA, RXCB/SCTEB, TXCA/TXCA, TXCB/TXCB, SCTEA/RXCA, SCTEB/RXCB, TXDA/RXDA, TXDB/RXDB 16 U1 1 MAX3170CAI (clock/data transceiver) (28 SSOP) U2 1 MAX3171CAI (control transceiver) (28 SSOP) U3 1 MAX3172CAI (terminator) (28 SSOP) U4, U5 2 Scope probe connectors (top mount) Specialty Conn 33JR135-1 light, indicating no-cable mode. All board labels, including all of the labels for the LEDs, follow the same label format. The board label format includes a top label which corresponds to DCE mode, and a bottom label which corresponds to DTE mode. 3) The green LEDs are attached to the receiver logic outputs of the MAX3170 and MAX3171. The LEDs will light when the receiver logic outputs are a logic high. Verify that all green LEDs light when no signals are attached to the DB25 connector. Note: The receivers have the true fail-safe feature allowing zero differential voltage to be a valid state, which forces the receiver outputs high. 4) The red LEDs are attached to the transmitter logic inputs of the MAX3170 and MAX3171. The LEDs will light when the transmitter logic inputs are a logic high. Verify that none of the red LEDs light when no signals are connected to the 40-pin header. 74HC240 (LED inverting drivers) Quick Start The MAX3170 EV kit is extremely flexible and has several settings for both the ICs as well as the board. The ICs have been put into no-cable mode, as the default mode. In no-cable mode the user is able to program the desired protocol with an external controller connected to the 40-pin header. The one exception is the INVERT signal, which does not have an internal pullup and is connected as a logic low for the default setting. The default mode settings are shown in Tables 1–4. By default, the SMA connectors (J3, J4, and J5) are terminated with 50Ω and the control transmitter input lines are all tied low. 1) Connect a single +3.3V ±5% power supply to VCC and GND located at the lower-left corner of the MAX3170 EV kit board. Detailed Description The MAX3170 EV kit was designed to take advantage of the chipset’s flow-through pinout. The logic signals have all been routed to the 40-pin header (located on the left side of the EV kit board), and the protocol signals have all been routed to the female DB25 connector (located on the right side of the board). Various connectors have been added to the MAX3170 EV kit to aid in taking quality measurements. Leave JU19 unconnected when measuring the supply current of the chipset. Scope probe connectors have been added to measure the high-speed signals of the transmitter and receiver inputs and outputs of the MAX3170. The scope probe connectors located on the left side of the board are connected to the logic input and output signals. The scope probe connectors located on the right side of the board are connected to the protocol input and output signals. Three SMA connectors also have been provided for driving the MAX3170’s highspeed transmitter inputs. The 16 LEDs across the top of the board are logic indicators. The red LEDs indicate the state of the transmitter inputs, the green LEDs indicate the state of the receiver outputs, and the yellow LEDs indicate the state of the protocol and the protocol termination modes of the MAX3170 and MAX3171. The LEDs will light up when their corresponding signals are logic high. 2) The yellow LEDs indicate the protocol mode of the chipset. The LEDs will light when the corresponding signal is a logic high. Verify that all yellow LEDs 2 _______________________________________________________________________________________ MAX3170 Evaluation Kit MODE No cable M2 M1 M0 DCE/DTE T1 T2 T3 R1 R2 R3 1 1 1 1 Z Z Z Z Z Z Z = High impedance. Note: Shaded areas share a single IC pin. Table 2. MAX3171 Default Mode MODE No cable M2 M1 M0 DCE/DTE T1 T2 T3 R1 R2 R3 1 1 1 1 Z Z Z Z Z Z T4 Z R4 Z Z = High Impedance. Note: Shaded areas share a single IC pin. Table 3. MAX3172 R4/T4 Default Mode MODE M2 1 No cable M1 1 M0 1 DCE/DTE 1 INVERT 0 Z = High impedance. Table 4. MAX3172 Default Termination Mode MODE No cable M2 M1 M0 DCE/DTE INVERT R1 R2 R3 R4 R5 1 1 1 1 0 V.11 V.11 V.11 V.11 V.11 Configuration The following is a step-by-step procedure to configure the MAX3170 EV kit. The MAX3170 EV kit is extremely flexible and has several settings for both the ICs, as well as the board. The logic signals have all been routed to the 40-pin header on the left side of the board. The protocol signals have all been routed to the female DB25 connector on the right side of the board. The chipset protocol modes can be configured to support V.28 (RS-232), V.11 (RS-449/V.36, EIA-530, EIA530A, X.21), and V.35 protocols. All chipset logic inputs, LED power, and shield ground connection are jumper selectable. The board includes SMA connectors (J3, J4, and J5) with optional 50Ω termination. The board settings will be separated in the following sections: chipset protocol modes, clock/data transmitter input settings, control transmitter input settings, SMA termination, and power/ground. 1) Connect a single +3.3V ±5% power supply to VCC and GND located at the lower-left corner of the MAX3170 EV kit board. 2) Chipset protocol modes: View the desired chipset protocol mode using the MAX3170, MAX3171, and MAX3172 selection mode tables (Tables 5–8). Connect the jumpers to the corresponding state depending on whether the mode lines will be controlled by an external controller or pin-strapped to a known state using Tables 9 and 10. Unlike the other IC protocol mode lines (M2, M1, M0, and DCE/DTE), the INVERT line does not have a pullup. _______________________________________________________________________________________ 3 Evaluates: MAX3170/MAX3171/MAX3172 Table 1. MAX3170 Default Mode Evaluates: MAX3170/MAX3171/MAX3172 MAX3170 Evaluation Kit 3) Clock/data transmitter input settings: with 50Ω, to the corresponding state using Table 13. Leave unused transmitter input lines terminated so the line is pulled down in a known state. When using SMA termination, avoid connecting JU1, JU2, and JU3 to VCC. Connect the clock/data jumpers to the corresponding state using Table 11. Force the inputs of all unused transmitters low so their corresponding LED indicators will be off. 6) Power/ground: 4) Control transmitter input settings: Connect the power and ground jumpers according to the desired operation using Table 14. Leave JU19 unconnected (open) when measuring the supply current of the chipset. Connect the control jumpers to the corresponding state using Table 12. Force the inputs of all unused transmitters low so their corresponding LED indicators will be off. 5) SMA termination: Connect the termination jumpers, depending on whether the signal source needs to be terminated Table 5. MAX3170 Mode Selection MODE V.11 M2 M1 M0 DCE/DTE T1 T2 T3 R1 R2 R3 0 0 0 0 V.11 V.11 Z V.11 V.11 V.11 RS-530A 0 0 1 0 V.11 V.11 Z V.11 V.11 V.11 RS-530 0 1 0 0 V.11 V.11 Z V.11 V.11 V.11 X.21 0 1 1 0 V.11 V.11 Z V.11 V.11 V.11 V.35 1 0 0 0 V.35 V.35 Z V.35 V.35 V.35 RS-449/V.36 1 0 1 0 V.11 V.11 Z V.11 V.11 V.11 V.28/RS-232 1 1 0 0 V.28 V.28 Z V.28 V.28 V.28 No cable 1 1 1 0 Z Z Z Z Z Z V.11 0 0 0 1 V.11 V.11 V.11 Z V.11 V.11 RS-530A 0 0 1 1 V.11 V.11 V.11 Z V.11 V.11 RS-530 0 1 0 1 V.11 V.11 V.11 Z V.11 V.11 X.21 0 1 1 1 V.11 V.11 V.11 Z V.11 V.11 V.35 1 0 0 1 V.35 V.35 V.35 Z V.35 V.35 RS-449/V.36 1 0 1 1 V.11 V.11 V.11 Z V.11 V.11 V.28/RS-232 No cable 1 1 1 1 0 1 V.28 V.28 V.28 Z V.28 V.28 1 1 Z Z Z Z Z Z Z = High impedance. Note: Shaded areas share a single IC pin. 4 _______________________________________________________________________________________ MAX3170 Evaluation Kit Evaluates: MAX3170/MAX3171/MAX3172 Table 6. MAX3171 Mode Selection MODE M2 0 M1 0 M0 0 DCE/DTE 0 T1 V.11 T2 V.11 T3 Z R1 V.11 R2 V.11 R3 V.11 RS-530A 0 0 1 0 V.11 V.10 Z V.11 V.10 V.11 RS-530 0 1 0 0 V.11 V.11 Z V.11 V.11 V.11 X.21 0 1 1 0 V.11 V.11 Z V.11 V.11 V.11 V.35 1 0 0 0 V.28 V.28 Z V.28 V.28 V.28 RS-449/V.36 1 0 1 0 V.11 V.11 Z V.11 V.11 V.11 V.28/RS-232 1 1 0 0 V.28 V.28 Z V.28 V.28 V.28 No cable 1 1 1 0 Z Z Z Z Z Z V.11 V.11 0 0 0 1 V.11 V.11 V.11 Z V.11 V.11 RS-530A 0 0 1 1 V.11 V.10 V.11 Z V.10 V.11 RS-530 0 1 0 1 V.11 V.11 V.11 Z V.11 V.11 X.21 0 1 1 1 V.11 V.11 V.11 Z V.11 V.11 V.35 1 0 0 1 V.28 V.28 V.28 Z V.28 V.28 RS-449/V.36 1 0 1 1 V.11 V.11 V.11 Z V.11 V.11 V.28/RS-232 1 1 0 1 V.28 V.28 V.28 Z V.28 V.28 No cable 1 1 1 1 Z Z Z Z Z Z Z = High impedance. Note: Shaded areas share a single IC pin. _______________________________________________________________________________________ 5 Evaluates: MAX3170/MAX3171/MAX3172 MAX3170 Evaluation Kit Table 7. MAX3172 R4/T4 Mode Selection MODE M2 M1 M0 DCE/DTE INVERT T4 R4 V.11 0 0 0 0 0 Z V.10 RS-530A 0 0 1 0 0 Z V.10 RS-530 0 1 0 0 0 Z V.10 X.21 0 1 1 0 0 Z V.10 V.35 1 0 0 0 0 Z V.28 RS-449/V.36 1 0 1 0 0 Z V.10 V.28/RS-232 1 1 0 0 0 Z V.28 No cable 1 1 1 0 0 Z Z V.11 0 0 0 1 0 V.10 Z RS-530A 0 0 1 1 0 V.10 Z RS-530 0 1 0 1 0 V.10 Z X.21 0 1 1 1 0 V.10 Z V.35 1 0 0 1 0 V.28 Z RS-449/V.36 1 0 1 1 0 V.10 Z V.28/RS-232 1 1 0 1 0 V.28 Z No cable 1 1 1 1 0 Z Z V.11 0 0 0 0 1 V.10 Z RS-530A 0 0 1 0 1 V.10 Z RS-530 0 1 0 0 1 V.10 Z X.21 0 1 1 0 1 V.10 Z V.35 1 0 0 0 1 V.28 Z RS-449/V.36 1 0 1 0 1 V.10 Z V.28/RS-232 1 1 0 0 1 V.28 Z No cable 1 1 1 0 1 Z Z V.11 0 0 0 1 1 Z V.10 RS-530A 0 0 1 1 1 Z V.10 RS-530 0 1 0 1 1 Z V.10 X.21 0 1 1 1 1 Z V.10 V.35 1 0 0 1 1 Z V.28 RS-449/V.36 1 0 1 1 1 Z V.10 V.28/RS-232 1 1 0 1 1 Z V.28 No cable 1 1 1 1 1 Z Z Z = High impedance. 6 _______________________________________________________________________________________ MAX3170 Evaluation Kit Evaluates: MAX3170/MAX3171/MAX3172 Table 8. MAX3172 Termination Mode Selection M2 M1 M0 DCE/DTE INVERT R1 R2 R3 R4 R5 V.11 (Unterminated) MODE 0 0 0 0 X Z Z Z Z Z RS-530A 0 0 1 0 X Z Z V.11 V.11 V.11 RS-530 0 1 0 0 X Z Z V.11 V.11 V.11 X.21 0 1 1 0 X Z Z V.11 V.11 V.11 V.35 1 0 0 0 X V.35 V.35 V.35 V.35 V.35 RS-449/V.36 1 0 1 0 X Z Z V.11 V.11 V.11 V.28/RS-232 1 1 0 0 X Z Z Z Z Z No cable 1 1 1 0 X V.11 V.11 V.11 V.11 V.11 V.11 (Unterminated) 0 0 0 1 X Z Z Z Z Z RS-530A 0 0 1 1 X Z Z Z V.11 V.11 RS-530 0 1 0 1 X Z Z Z V.11 V.11 X.21 0 1 1 1 X Z Z Z V.11 V.11 V.35 1 0 0 1 X V.35 V.35 V.35 V.35 V.35 RS-449/V.36 1 0 1 1 X Z Z Z V.11 V.11 V.28/RS-232 1 1 0 1 X Z Z Z Z Z No cable 1 1 1 1 X V.11 V.11 V.11 V.11 V.11 Z = High impedance. Table 9. Chipset Protocol Mode Jumper Settings JUMPER SIGNAL (BUS) JU14 DCE/DTE STATE Open* Closed JU15 M2 Open* Closed JU16 M1 Open* Closed JU17 M0 Open* Closed FUNCTION Logic high. (Internal pullup in IC.) DCE/DTE line can be driven by signal applied to J1-30 (40-pin header). Logic low Logic high. (Internal pullup in IC.) M2 line can be driven by signal applied to J1-32 (40-pin header). Logic low Logic high. (Internal pullup in IC.) M1 line can be driven by signal applied to J1-34 (40-pin header). Logic low Logic high. (Internal pullup in IC.) M0 line can be driven by signal applied to J1-36 (40-pin header). Logic low *Default jumper setting. _______________________________________________________________________________________ 7 Evaluates: MAX3170/MAX3171/MAX3172 MAX3170 Evaluation Kit Table 10. Invert Mode Jumper Settings JUMPER JU12 SIGNAL INVERT FUNCTION STATE 1-2* Logic high 2-3 Logic low Open Apply signal to J1-38 (40-pin header) *Default jumper setting. Table 11. Clock/Data Transmitter Input Jumper Settings JUMPER DCE/DTE JU1 RXD/TXD JU2 RXC/SCTE JU3 TXC/N/A STATE 1-2 2-3 Open* 1-2 2-3 Open* 1-2 2-3 Open* FUNCTION Logic high Logic low Apply signal to SMA connector J3 Logic high Logic low Apply signal to SMA connector J4 Logic high Logic low Apply signal to SMA connector J5 *Default jumper setting. Table 12. Control Transmitter Input Jumper Settings JUMPER DCE/DTE JU4 CTS/RTS JU5 DSR/DTR JU6 DCD/N/A JU7 LL/N/A STATE 1-2 2-3* Open 1-2 2-3* Open 1-2 2-3* Open 1-2 2-3* Open FUNCTION Logic high Logic low Apply signal to J1-14 (40-pin header) Logic high Logic low Apply signal to J1-16 (40-pin header) Logic high Logic low Apply signal to J1-18 (40-pin header) Logic high Logic low Apply signal to J1-26 (40-pin header) *Default jumper setting. 8 _______________________________________________________________________________________ MAX3170 Evaluation Kit Evaluates: MAX3170/MAX3171/MAX3172 Table 13. Termination settings JUMPER DCE/DTE JU8 RXD/TXD JU9 RXC/SCTE JU10 TXC/ N/A STATE Open Closed* Open Closed* Open Closed* FUNCTION Unterminated Terminated with 50Ω Unterminated Terminated with 50Ω Unterminated Terminated with 50Ω *Default jumper setting. Table 14. Power/Ground Jumper Settings JUMPER NAME JU11 SHIELD JU19 LED ANODE STATE Open Closed* Open Closed* FUNCTION DB25 cable shield (J2-1) disconnected from signal ground DB25 cable shield (J2-1) shorted to signal ground LED anode is floating LED anode is connected to VCC *Default jumper setting. _______________________________________________________________________________________ 9 J1–1 J1–3 J1–5 J1–7 J1–9 J1–11 J1–13 J1–15 J1–17 J1–19 J1–21 J1–14 J1–16 J1–18 J1–20 J1–22 J1–24 J1–23 J1–25 J1–27 J1–29 J1–31 J1–33 J1–35 J1–37 J1–39 J1–40 SMA CONNECTORS J1–12 J1–8 J1–10 J1–6 J1–4 J1–2 J1–38 J1–30 J1–32 J1–34 J1–36 J1–26 J1–28 JU7 1 2 3 J3 J4 R1 JU8 49.9Ω R2 49.9Ω R3 49.9Ω J5 JU9 JU10 VCC JU4 1 2 3 3 JU1 1 2 JU12 1 2 3 INVERT JU5 1 2 3 JU6 1 2 3 3 1 2 C3 1.0µF N/A/LL LL/N/A CTS/RTS DSR/DTR DCD/N/A N/A/DCD DTR/DSR RTS/CTS Figure 1. MAX3170 EV Kit Schematic (Sheet 1 of 2) 10 ______________________________________________________________________________________ C11 100pF C13 100pF C12 100pF C7 3.3µF R3OUT R2OUT R1OUT T3IN T2IN T1IN V+ C2+ C2V- VCC 3 2 1 27 28 12 19 7 8 26 24 17 5 6 7 8 9 10 11 12 13 14 2 3 4 1 MAX3171 U2 VCC 27 M0 M1 M2 DCE/DTE INVERT R3C R2C T4IN R4OUT V+ VR1C 4 C1+ C1- 9, 18, 22 GND R1A U3 R1B MAX3172 R2A R2B R3A R3B R4A R4B R5A R5B T4OUT R4INA VCC 24 23 22 21 20 19 18 17 16 15 28 25 20 14 13 11 10 5 6 25 23 15 16 21 24 23 22 21 20 19 18 17 16 15 28 25 C10 3.3µF T1OUTA T1IN T1OUTB T2IN T2OUTA T3IN T2OUTB R1OUT R2OUT T3OUTA/R1INA R3OUT T3OUTB/R1INB MO R2INB M1 R2INA M2 R3INA DCE/DTE GND R3INB 26 V+ C2+ C2V- C1+ C1- C5 3.3µF C17 0.1µF T1OUTA T1OUTB T2OUTA T2OUTB T3OUTA/R1INA T3OUTB/R1INB R2INB R2INA R3INA R3INB MAX3170 U1 27 VCC MO M1 M2 DCE/DTE GND 26 SCOPE PROBES CONNECTORS 11 12 13 14 10 8 7 6 5 2 3 4 1 TXD/RXD C8 1.0µF C2 3.3µF C1 3.3µF 9 C6 3.3µF JU15 JU16 JU17 SCTE/RXC N/A/TXC TXC/N/A RXC/SCTE 1 2 3 RXD/TXD M2 M1 M0 JU2 JU3 JU14 DCE/DTE C9 1.0µF C4 1.0µF C16 47µF JU11 J2–4 J2–19 J2–20 J2–23 J2–8 J2–10 J2–22 J2–6 J2–5 J2–13 J2–2 J2–14 J2–24 J2–11 J2–15 J2–12 J2–9 J2–17 J2–3 J2–16 J2–18 J2-25 J2-21 J2-1 J2-7 RXDA/TXDA RXDB/TXDB RXCA/SCTEA RXCB/SCTEB TXCA/TXCA TXCB/TXCB SCTEB/RXCB SCTEA/RXCA TXDA/RXDA TXDB/RXDB Evaluates: MAX3170/MAX3171/MAX3172 N/C N/C MAX3170 Evaluation Kit MAX3170 Evaluation Kit Evaluates: MAX3170/MAX3171/MAX3172 VCC JU19 C14 0.1µF R8 100Ω C15 0.1µF R16 100Ω D1 U4-A 20 1 RXD/TXD RXC/SCTE TXC/N/A N/A/TXC 2 18 4 16 14 6 8 R9 100Ω R10 100Ω 10 D3 R11 100Ω D4 R12 100Ω D5 DCD/N/A N/A/DCD DTR/DSR RTS/CTS 2 18 4 16 14 6 8 R13 100Ω 11 9 13 7 5 10 R14 100Ω 19 D6 D7 3 74HC240 D10 R18 100Ω D11 R19 100Ω D12 R20 100Ω D13 R21 100Ω D14 R22 100Ω D15 R23 100Ω D16 U5-B 19 15 17 R17 100Ω 12 74HC240 U4-B DSR/DTR CTS/RTS TXD/RXD SCTE/RXC 20 1 D2 12 74HC240 D9 U5-A R15 100Ω D8 DCE/DTE M2 M1 M0 11 9 13 7 5 15 17 3 74HC240 Figure 1. MAX3170 EV Kit Schematic (Sheet 2 of 2) ______________________________________________________________________________________ 11 Evaluates: MAX3170/MAX3171/MAX3172 MAX3170 Evaluation Kit 2.0" 2.0" Figure 2. MAX3170 EV Kit Component Placement Guide— Top Layer (Silkscreen) Figure 3. MAX3170 EV Kit Component Placement Guide— Top Layer (Component Side) 2.0" Figure 4. MAX3170 EV Kit PC Board Layout—Inner Layer 2 (GND) 12 ______________________________________________________________________________________ MAX3170 Evaluation Kit 2.0" Figure 5. MAX3170 EV Kit PC Board Layout—Inner Layer 3 (VCC) Figure 6. MAX3170 EV Kit PC Board Layout—Bottom Layer (Solder Side) 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 notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________13 © 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. Evaluates: MAX3170/MAX3171/MAX3172 2.0"