LTC2845CUHF Linear Technology, LTC2845CUHF Datasheet
LTC2845CUHF
Specifications of LTC2845CUHF
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LTC2845CUHF Summary of contents
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... The LTC2845 operates from a 3.3V supply and supplies provided by the LTC2846. This part is available in a 36-lead SSOP and 38-lead (7mm x 5mm) QFN package. The LTC2845 and LTC2847 in QFN packages offer the smallest multiprotocol serial port available. , LTC and LT are registered trademarks of Linear Technology Corporation. DCD DTR RTS RXD ...
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... 5V 3.3V 8V CONDITIONS RS530, RS530-A, X.21 Modes, No Load RS530, RS530-A, X.21 Modes, Full Load V.28 Mode, No Load V.28 Mode, Full Load No-Cable Mode ORDER PART TOP VIEW NUMBER LTC2845CUHF LTC2845IUHF D3/R1 A D3/ UHF PART 22 ...
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ELECTRICAL CHARACTERISTICS ture range, otherwise specifications are at T (Notes 2, 3) SYMBOL PARAMETER I V Supply Current (DCE Mode All Digital Pins = GND Supply Current (DCE Mode All ...
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LTC2845 ELECTRICAL CHARACTERISTICS ture range, otherwise specifications are at T (Notes 2, 3) SYMBOL PARAMETER V.11 Receiver V Input Threshold Voltage TH V Input Hysteresis TH I Input Current ( Input Impedance Rise ...
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ELECTRICAL CHARACTERISTICS ture range, otherwise specifications are at T (Notes 2, 3) SYMBOL PARAMETER V.28 Receiver V Input Low Threshold Voltage THL V Input High Threshold Voltage TLH V Receiver Input Hysterisis TH R Receiver Input Impedance ...
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LTC2845 PIN FUNCTIONS (G-36/QFN-38 Packages) V (Pins 1, 19/Pins 17, 36): Positive Supply for the CC Transceivers. Connect to V Pin 8 on LTC2846 supply. Connect capacitor to ground. V ...
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W BLOCK DIAGRA 10k 10k 20k 10k 10k 20k 20k 10k 10k 20k ...
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LTC2845 W U ODE SELECTIO MODE NAME M2 M1 Not Used (Default V.11 RS530A 0 0 RS530 RS449/V. V.28/RS232 Cable 1 1 Not Used (Default ...
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U W SWITCHI WAVEFOR PLH – A 50% – OD2 B – –V OD2 t PLH ...
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LTC2845 U U APPLICATIONS INFORMATION Overview The LTC2846/LTC2845 or LTC2847/LTC2845 form the core of a complete software-selectable DTE or DCE inter- face port that supports the RS232, RS449, EIA530, EIA530- A, V.35, V.36 or X.21 protocols. Cable termination is provided ...
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U U APPLICATIONS INFORMATION Mode Selection The interface protocol is selected using the mode select pins M0, M1 and M2 (see the Mode Selection table). For example, if the port is configured as a V.35 interface, the mode selection pins ...
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LTC2845 U U APPLICATIONS INFORMATION The V.10 receiver configuration in the LTC2845 is shown in Figure 13. In V.10 mode switch S3 inside the LTC2845 is turned off. The noninverting input is disconnected inside the LTC2845 receiver and connected to ...
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U U APPLICATIONS INFORMATION V.28 (RS232) Interface A typical V.28 unbalanced interface is shown in Figure 16. A V.28 single-ended generator output A with ground C is connected to a single-ended receiver with input A ' nected to A, ground ...
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LTC2845 U U APPLICATIONS INFORMATION LTC2846 V.35 DRIVER 124 S2 Figure 20. V.35 Driver No-Cable Mode The no-cable mode ( D4ENB = 1, R4EN = 0) is intended for the case when the cable is ...
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U TYPICAL APPLICATIONS TXD SCTE TXC RXC RXD Figure 23. Controller-Selectable Multiprotocol DTE Port with DB-25 Connector L1 D1 MBR0520 5.6 H ...
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LTC2845 U TYPICAL APPLICATIONS RXD RXC TXC SCTE TXD Figure 24. Controller-Selectable DCE Port with DB-25 Connector MBR0520 5.6 ...
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U TYPICAL APPLICATIONS DTE_TXD/DCE_RXD DTE_SCTE/DCE_RXC DTE_TXC/DCE_TXC DTE_RXC/DCE_SCTE DTE_RXD/DCE_TXD DCE/DTE Figure 25. Controller-Selectable Multiprotocol DTE/DCE Port with DB-25 Connector L1 D1 MBR0520 5.6 ...
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LTC2845 PACKAGE DESCRIPTION 7.8 – 8.2 0.42 0.03 RECOMMENDED SOLDER PAD LAYOUT 5.00 – 5.60** (.197 – .221) 0.09 – 0.25 0.55 – 0.95 (.0035 – .010) (.022 – .037) NOTE: 1. CONTROLLING DIMENSION: MILLIMETERS MILLIMETERS 2. DIMENSIONS ARE IN ...
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... DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. U ...
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... Signals, Generates the Required 5V and 8V Supplies for LTC2846 and Companion Parts 3-Driver/3-Receiver with Termination for Data and Clock Signals. Seperate Supply for Digital Interface Works Down to 3.3V www.linear.com TXC SCTE TXD RXC LTC2846 LT/TP 0703 1K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2002 *OPTIONAL 2845 TA01 sn2845 2845fs ...