LTC1344A Linear Technology, LTC1344A Datasheet
LTC1344A
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LTC1344A Summary of contents
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... A data bus latch feature allows sharing of the select lines between multiple interface ports. The LTC1344A is similar to the LTC1344 except for a difference in the Mode Selection table. The LTC1344A is available in a 24-lead SSOP. , LTC and LT are registered trademarks of Linear Technology Corporation. ...
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... Input Voltage (Logic Inputs) .................... (V – 0.3V Input Voltage (Load Inputs) .................................. 18V Power Dissipation .............................................. 600mW Operating Temperature Range LTC1344AC ............................................ LTC1344AI ......................................... – Storage Temperature Range ................ – 150 C Lead Temperature (Soldering, 10 sec)................. 300 C ELECTRICAL CHARACTERISTICS 5 – ...
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... V.35 Common Mode Inpedance vs Negative Supply Voltage ( 154 153 152 151 150 – 5.4 – 5.2 – 5.0 – 4.8 – 4.6 V VOLTAGE (V) EE 1344 G08 LTC1344A V.11 or V.35 Differential Mode Impedance vs Supply Voltage ( 105 104 103 4.6 4.8 5.0 5.2 5.4 V VOLTAGE (V) CC 1344 G03 V.35 Common Mode Impedance ...
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... M2 (Pin 23): TTL Level Mode Select Input 1. The data latched when LATCH is high. M1 (Pin 24): TTL Level Mode Select Input 2. The data on 5.25V latched when LATCH is high. LTC1344A R3 124 A, B 1344 F01 Figure 2. V.35 Common Mode Impedance Measurement C LTC1344A R1 51 124 R2 51 ...
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... LTC1344A R1 51 124 R2 51.5 B V.35 Mode Figure 3. LTC1344A Modes LTC1344A V. V. V.11 V. V.11 V.35 Z V.35 V.35 V.35 V. V.11 V. ...
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... In V.10 mode, both switches S1 and S2 are turned off so the only cable termination is the input impedance of the V.10 receiver GENERATOR Z Figure 5. V.10 Interface Using the LTC1344A V.11 (RS422) Termination A typical V.11 balanced interface is shown in Figure 6. A V.11 differential generator with outputs A and B with ' con- ground C is connected to a differential receiver with ' ground C V ...
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... V.35 differential generator with outputs A and B with ground C is connected to a differential receiver with ' ground C V.35 interface requires a T-network termination at the receiver end and the generator end. In V.35 mode both switches S1 and S2 in the LTC1344A are turned on as shown in Figure 11. ' con- The differential impedance measured at the connector must be 100 terminals A input impedance of the V ...
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... The LATCH Pin The LATCH pin (21) allows the select lines (M0, M1, M2 and DCE/DTE shared with multiple LTC1344As, each with its own LATCH signal. When the LATCH pin is held low the select line input buffers are transparent. When ...
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... INVERT DCE/DTE LTC1344A C8 100pF LTC1344A 21 LATCH DTE TXD A 14 TXD B 24 SCTE A 11 SCTE B 15 TXC A 12 TXC B 17 RXC A 9 RXC B ...
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... R4 CABLE WIRING FOR MODE SELECTION MODE PIN 18 PIN 21 D4 V.35 PIN 7 PIN 7 RS449, V.36 NC PIN 7 RS232 PIN INVERT C8 100pF LTC1344A 21 LATCH DTE TXD A 14 TXD B 24 SCTE A 11 SCTE B 15 TXC A 12 ...
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... DWG # 05-08-1640 – 8 0.0256 (0.65) BSC 0.010 – 0.015 (0.25 – 0.38) LTC1344A 0.318 – 0.328* (8.07 – 8.33 0.301 – 0.311 (7.65 – 7.90) 0.068 – 0.078 (1.73 – 1.99) 0.002 – 0.008 (0.05 – 0.21) G24 SSOP 0595 ...
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... McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear-tech.com DCE/DTE are shared by both chips. Each driver output and receiver input is connected to one of the LTC1344A termination ports. Each electrical protocol can then be chosen using the digital select lines. 100pF 100pF ...