on April 17th 1,766

ADM5170AP Line Driver Guide: Features, Pinout, Applications and RS-232/RS-423 Signal Conversion

This guide is all about the ADM5170AP, a special chip that helps send signals in digital communication systems. It focuses on how this chip takes basic logic signals (like TTL or CMOS) and converts them into stronger RS-232 or RS-423 signals for better transmission. It also explains how the ADM5170AP allows you to select the output mode, adjust the signal speed, and use it efficiently. It highlights how this chip makes it easier to connect and send data clearly and reliably over longer distances.

Catalog

ADM5170AP Overview

The ADM5170AP is a versatile octal line driver tailored for digital communication systems, handling data rates up to 116 kB/s. It is uniquely engineered to accept TTL or CMOS inputs, which are then inverted and translated into RS-232E or RS-423A signal levels. This flexibility is governed by the Mode Select inputs MS+ and MS–; setting both to GND initiates RS-423 operation, whereas connecting MS+ to VDD and MS– to VSS enables RS-232 operation. The output slew rate can be finely adjusted from 10 V/µs to 2.2 V/µs by connecting an external resistor between the Slew Rate Adjust (SRA) pin and GND, accommodating various cable lengths and types. The device also features outputs that can be disabled using the EN (Enable Input) pin, allowing the sharing of a common output line which enhances system design flexibility and efficiency. The ADM5170AP integrates low power CMOS technology, output short circuit protection, and TTL/CMOS compatible inputs, making it an ideal choice for high-speed modems, computer I/O ports, and logic level translation applications.

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ADM5170AP Pin Configuration

Mnemonic	Function
VDD	Power Supply Input, +10 V ± 10%.
VSS	Power Supply Input, –10 V ± 10%.
GND	Ground Pin. Must be connected to 0 V.
AI . . . HI	Digital Input to Drivers A to H.
AO . . . HO	RS-232/RS-423 Output from Drivers A to H.
EN	Enable Pin. When high, all outputs are 3-stated.
MS+, MS–	Mode Select Inputs. Used to control the output level swing. With MS+ & MS- connected to GND, RS-423A output levels are selected. With MS+ connected to VDD and MS– connected to VSS, RS-232 output levels are developed.
SRA	Slew Rate Adjust Input. An external resistor (2 kΩ to 10 kΩ) connected between this pin and GND is used to control the Output Slew Rate (10 V/µs to 2.2 V/µs).

ADM5170AP CAD Models

ADM5170AP Symbol

ADM5170AP Footprint

ADM5170AP 3D Model

ADM5170AP Features

• Eight Single-Ended Line Drivers: The ADM5170AP includes eight independent line drivers in one package, allowing for multiple channels of data transmission simultaneously. This feature is useful for complex digital communication systems that require multiple signal outputs

• Standards Compliance: This device is compliant with EIA RS-232E, RS-423A, and CCITT V.10/X.26 standards, ensuring it can operate smoothly within a range of digital communication frameworks and is compatible with international communication protocols.

• Programmable Slew Rate: You can adjust the output slew rate from 10 V/µs to 2.2 V/µs by connecting an external resistor between the Slew Rate Adjust (SRA) pin and ground. This adjustability allows for fine-tuning of signal integrity according to the characteristics of the connecting cable, reducing signal reflections and transmission errors.

• Wide Supply Voltage Range: The ADM5170AP operates with a supply voltage range from 9 V to 15 V for VDD and from –9 V to –15 V for VSS. This broad range accommodates various power supplies, enhancing the device's flexibility in different system configurations.

• Low Power CMOS Technology: Built with low power CMOS technology, the ADM5170AP reduces power consumption down to 40 mW when disabled. This feature is important for energy-saving in systems that require long operational hours and sustainability.

• 3-State Outputs: The output pins of the ADM5170AP can be disabled using the EN (Enable Input) pin. This functionality allows for the sharing of common communication lines and prevents signal interference, making it ideal for systems where multiple drivers share output pathways.

• TTL/CMOS Compatible Inputs: The line driver accepts both TTL and CMOS input levels, offering versatility in interfacing with various logic families. This feature simplifies the design process by eliminating the need for additional level shifting hardware.

• Output Short Circuit Protection: It includes built-in protection against output shorts, which enhances the reliability and durability of the device by preventing damage due to accidental short circuits during operation.

ADM5170AP Block Diagram

The block diagram of the ADM5170AP illustrates its function as an octal line driver, handling eight input-output signal channels labeled A through H. Each signal input (AI to HI) passes through a dedicated inverting line driver, which converts TTL/CMOS input signals into appropriate line driver output levels (AO to HO). These outputs can operate under either RS-232 or RS-423 standards, depending on the mode selected via the MS+ and MS– pins. The Mode Select block at the bottom of the diagram switches between RS-232 and RS-423 signaling levels.

Additionally, the diagram shows a Slew Rate Control pin (SRA), which allows the to adjust the transition rate of the output signals. This helps manage signal integrity and electromagnetic interference (EMI), particularly over longer transmission lines. The EN pin is an enable control that activates or disables all drivers simultaneously. Overall, the ADM5170AP is a versatile line driver IC used in digital communication systems, designed to support multiple standards and ensure reliable signal transmission over serial data links.

ADM5170AP Specifications

Type	Parameter
Manufacturer	Analog Devices Inc.
Packaging	Tube
Part Status	Obsolete
Type	Driver
Protocol	RS232, RS423
Number of Drivers/Receivers	8/0
Data Rate	116Kbps
Voltage - Supply	9V ~ 15V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	28-LCC (J-Lead)
Supplier Device Package	28-PLCC (11.51x11.51)
Base Product Number	ADM5170

ADM5170AP Output Mode Programming

The ADM5170AP chip has two output modes that let it work with different voltage standards for sending signals. These modes are:

1. Low Output Mode: This mode follows the RS-423A standard, which is used for straightforward, point-to-point communications. To use this mode, connect the mode select pins, labeled MS+ and MS–, directly to the ground (GND). This setup keeps the voltage levels lower and more controlled, which is good for avoiding interference when lines are close together.

2. High Output Mode: This mode matches the RS-232 standard and is suitable for scenarios where cables are long or the signal has to travel far, as it allows for stronger and higher voltage signals. To activate this mode, connect MS+ to the positive power supply (VDD) and MS– to the negative power supply (VSS). This makes the output stronger, ensuring the signal stays clear over longer distances.

Inputs				Outputs
MS+	MS–	EN	Data
GND	GND	0	0	5 V to 6 V (RS-423)
GND	GND	0	1	–5 V to –6 V (RS-423)
VDD	VSS	0	0	(VDD – 3 V) (RS-232)¹
VDD	VSS	0	1	(VSS + 3 V) (RS-232)¹
X	X	1	X	High Z

ADM5170AP Applications

High-Speed Communication Systems

The ADM5170AP is ideally suited for high-speed communication systems due to its capacity to handle data rates up to 116 kB/s. This makes it perfect for applications requiring rapid and reliable data transmission over networks.

Computer I/O Ports and Peripherals

This line driver is used extensively in interfacing computer input/output ports and peripherals. Its compatibility with TTL/CMOS levels and RS-232E/RS-423A standards ensures it can seamlessly integrate with a wide range of computer hardware, enhancing connectivity and data flow between devices.

High-Speed Modems

Given its high data rate handling and adjustable slew rate, the ADM5170AP is an excellent choice for high-speed modem applications. It helps modulate and demodulate data signals effectively, ensuring clear and consistent internet connectivity.

Printers

In printers, the ADM5170AP helps in the reliable transmission of data between the computer and the printer. Its ability to transmit data effectively over longer distances without loss ensures high-quality, fast printing operations.

Logic Level Translation

The device also plays a role in logic level translation, converting TTL or CMOS input levels into RS-232E or RS-423A output levels. This function is good in systems where devices operate at different logic levels, ensuring compatibility and effective communication across diverse electronic components.

ADM5170AP Similar Parts

• ADM560JRSZ

• ADM5170JP-REEL

• ADM560JRS

ADM5170AP Advantages

Dual Protocol Support with Mode Select

The ADM5170AP allows to select between RS-232E and RS-423A output standards using Mode Select inputs (MS+ and MS–). This dual compatibility offers flexibility in application design, accommodating various communication requirements without the need for additional components.

Eight Independent Drivers

Integrating eight single-ended line drivers into one package, the ADM5170AP minimizes the need for multiple chips, saving space and reducing complexity in system design. This integration is beneficial in environments with limited PCB real estate.

Wide Supply Voltage Range

The device's ability to operate across a wide supply voltage range (9 V to 15 V for VDD, and –9 V to –15 V for VSS) makes it adaptable to various power environments, enhancing its utility in diverse operational settings.

Low Power Consumption

Featuring low power CMOS technology, the ADM5170AP consumes less power, especially when disabled (only 40 mW). This energy efficiency makes it suitable for applications where power conservation is needed, such as battery-operated devices.

TTL/CMOS Compatible Inputs

Its compatibility with standard TTL and CMOS logic levels ensures the ADM5170AP can seamlessly interface with a broad range of digital systems, eliminating the need for level-shifting hardware and simplifying system design.

Output Short Circuit Protection

With built-in protection against output shorts, the ADM5170AP provides enhanced durability and reliability, protecting the device and the system from damage caused by accidental short circuits during operation.

ADM5170AP Packaging Dimensions

Package Dimensions

Parameter	Dimension (mm)
Body Width (Min – Max)	12.32 – 12.57
Body Length (Min – Max)	11.43 – 11.58
Body Height (Min – Max)	9.91 – 10.92
Lead Span (Min – Max)	4.19 – 4.57
Lead Pitch (Typical)	1.27
Lead Thickness (Min – Max)	0.33 – 0.53
Lead Width (Min – Max)	0.64 – 1.14
Standoff Height (Min)	0.51
Lead Shoulder Width (Min – Max)	1.07 – 1.42
Corner Radius (R) (Min – Max)	0.64 – 1.14

Package Outline

ADM5170AP Manufacturer

The ADM5170AP is manufactured by Analog Devices Inc. (ADI), a globally recognized leader in the design and production of high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. Founded in 1965 and headquartered in Wilmington, Massachusetts, ADI is known for delivering cutting-edge semiconductor solutions that serve applications across industries such as communications, industrial automation, automotive systems, and consumer electronics. ADI’s reputation for reliability and innovation is reflected in components like the ADM5170AP, which showcases the company’s focus on signal integrity, low power consumption, and system flexibility. Analog Devices ensures that every product, including the ADM5170AP, meets stringent quality and performance standards for modern electronic systems.

Conclusion

The ADM5170AP offers a well-rounded solution for digital communication applications demanding robust signal conversion and protocol flexibility. With support for RS-232E and RS-423A standards, eight independent driver channels, and features like programmable slew rate and output enable control, it simplifies design integration across a wide range of systems. Its compatibility with TTL/CMOS inputs, low power operation, and built-in short-circuit protection further enhance its utility in power-sensitive and space-constrained environments. Backed by Analog Devices' reputation for quality and innovation, the ADM5170AP is a solid choice for those seeking dependable performance in serial communication applications.

Datasheet PDF

ADM5170AP Datasheets:

Cylindrical Battery Holders.pdf