T5744N-TGS

T5744N-TGS Datasheet


T5744

Part Datasheet
T5744N-TGS T5744N-TGS T5744N-TGS (pdf)
Related Parts Information
T5744N-TGQ T5744N-TGQ T5744N-TGQ
PDF Datasheet Preview
• Minimal External Circuitry Requirements, no RF Components on the PC Board Except Matching to the Receiver Antenna
• High Sensitivity, Especially at Low Data Rates
• SSO20 and SO20 package
• Fully Integrated VCO
• Supply Voltage 4.5V to 5.5V, Operating Temperature Range to +105°C
• Single-ended RF Input for Easy Adaptation to l/4 Antenna or Printed Antenna on PCB
• Low-cost Solution Due to High Integration Level
• Various Types of Protocols Supported i.e., PWM, Manchester and Bi-phase
• Distinguishes the Signal Strength of Several Transmitters via RSSI Received Signal

Strength Indicator
• ESD Protection According to MIL-STD. 883 4KV HBM
• High Image Frequency Suppression Due to 1 MHz IF in Conjunction with a SAW Front-
end Filter, up to 40 dB is thereby Achievable with Newer SAWs
• Power Management Polling is Possible by Means of a Separate Pin via the

Microcontroller
• Receiving Bandwidth BIF = 600 kHz

UHF ASK Receiver

T5744

The T5744 is a PLL receiver device for the receiving range of f0 = 300 MHz to 450 MHz. It is developed for the demands of RF low-cost data communication systems with low data rates and fits for most types of modulation schemes including Manchester, Bi-phase and most PWM protocols. Its main applications are in the areas of telemetering, security technology and keyless-entry systems.

Figure System Block Diagram
1 Li cell

Encoder Keys ATARx9x

UHF ASK/FSK Remote control transmitter

UHF ASK Remote control receiver

U2741B

T5744

Demod.

Data interface

Antenna

IF Amp PLL

Power amp.

Pin Configuration

Figure Pinning SO20 and SSO20
20 DATA 19 ENABLE 18 TEST 17 RSSI 16 MODE 15 DVCC 14 XTO 13 LFGND 12 LF 11 LFVCC

T5744

BR_0 1 BR_1 2 CDEM 3 AVCC 4 AGND 5 DGND 6 MIXVCC 7 LNAGND 8 LNA_IN 9

NC 10

Table Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Pin Description Symbol BR_0 BR_1 CDEM AVCC AGND DGND MIXVCC LNAGND LNA_IN NC LFVCC LF LFGND XTO DVCC

MODE

RSSI

TEST

ENABLE

DATA
2 T5744

Function Baud rate select LSB Baud rate select MSB Lower cut-off frequency data filter Analog power supply Analog ground Digital ground Power supply mixer High-frequency ground LNA and mixer RF input Not connected Power supply VCO Loop filter Ground VCO Crystal oscillator Digital power supply Selecting MHz /315 MHz Low 315 MHz USA High MHz Europe Output of the RSSI amplifier Test pin, during operation at GND Selecting operation mode Low sleep mode High receiving mode Data output

Figure Block Diagram

CDEM RSSI AVCC AGND DGND

BR_0 BR_1

ASKDemodulator and data filter

RSSI

Dem_out
Ordering Information

Extended Type Number T5744N-TKS T5744N-TKQ T5744N-TGS T5744N-TGQ

Package Information

Package SO20

Dimensions in mm

Package SSO20 SO20

Remarks Tube Taped and reeled Tube Taped and reeled
technical drawings according to DIN specifications
18 T5744

T5744

Package SSO20

Dimensions in mm
technical drawings according to DIN specifications

History
4521C-RKE-05/05
• Put datasheet in a new template
• Figure 1-1 “System Block Diagram” on page 1 changed
• New heading rows at Table “Absolute Maximum Ratings” on page 12 added
• Table “Electrical Characteristics” on page 13 changed
• Table “Ordering Information” on page 18 changed

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Datasheet ID: T5744N-TGS 519407