This website uses cookies. By using this site, you consent to the use of cookies. For more information, please take a look at our Privacy Policy.

Images are for reference only,

See Technical Specifications

SN75C189D

Quadruple Low-Power Line Receiver

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

SN75C189D
Datasheet:

SN75C189D Datasheet (PDF)
Type:

Receiver
Protocol:

RS232
Number of Drivers/Receivers:

0/4
Receiver Hysteresis:

330 mV
EDA/CAD Models:

Request Free CAD Models for SN75C189D

Email: [email protected]

Skype: live:.cid.ab6b29428937b76

Tel: +852 95804164

SN75C189D General Description

The SN75C189 and SN75C189A are low-power, bipolar, quadruple line receivers that are used to interface data terminal equipment (DTE) with data circuit-terminating equipment (DCE). These devices have been designed to conform to TIA/EIA-232-F.

The SN75C189 has a 0.33-V typical hysteresis, compared with 0.97 V for the SN75C189A. Each receiver has provision for adjustment of the overall input threshold levels. This is achieved by choosing external series resistors and voltages to provide bias levels for the response-control pins. The output is in the high logic state if the input is open circuit or shorted to ground.

These devices have an on-chip filter that rejects input pulses of less than 1-us duration. An external capacitor can be connected from the control pins to ground to provide further input noise filtering for each receiver.

The SN75C189 and SN75C189A have been designed using low-power techniques in a bipolar technology. In most applications, these receivers interface to single inputs of peripheral devices such as UARTs, ACEs, or microprocessors. By using sampling, such peripheral devices usually are insensitive to the transition times of the input signals. If this is not the case, or for other uses, it is recommended that the SN75C189 and SN75C189A outputs be buffered by single Schmitt input gates or single gates of the HCMOS, ALS, or 74F logic families.

The SN75C189 and SN75C189A are characterized for operation from 0°C to 70°C.

Texas Instruments, IncMicrosoft.AspNetCore.Mvc.Localization.LocalizedHtmlString

Key Features

Meet or Exceed the Requirements of TIA/EIA-232-F and ITU Recommendation V.28
Low Supply Current.420 uA Typ
Preset On-Chip Input Noise Filter
Built-in Input Hysteresis
Response and Threshold Control Inputs
Push-Pull Outputs
Functionally Interchangeable and Pin-to-Pin Compatible With Texas Instruments SN75189/SN75189A and Motorola MC1489/MC1489A
Package Options Include Plastic Small-Outline (D) and Shrink Small-Outline (DB) Packages, and Standard Plastic (N) DIP

Specifications

Category	Integrated Circuits (ICs)InterfaceDrivers, Receivers, Transceivers	Series	-
Type	Receiver	Protocol	RS232
Number of Drivers/Receivers	0/4	Duplex	-
Receiver Hysteresis	330 mV	Data Rate	-
Voltage - Supply	4.5V ~ 6V	Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount	Base Product Number	75C189