5V'Powered, Multichannel RS-232 - PDF Submittedto the Electrical & Electronics EngineeringProgr

Drivers/Receivers

ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued)

(Vcc - +5V ±10%, C1-C4 - O.luF. Ta - Tmin to %AX- unless otherwise noted.)

PARAMETER CONDITIONS MEN TYP MAX UNITS

EN Input Threshold Low hv!AX242 1,4 0.8 V

EN Input Threshold High MAX242 2.0 1,4 V

Operating Supply Voltage ^4.S ^5.5 ^V

No load

MAX220 0,5 2

niA

MAX222/2 32A/233A/2 42/243 4 10

Vcc Supply Current (SHDN - Vcc).

Figures 5, 6. 11,19 _{3kQ load}

both inputs

MAX220 12

MAX222/2 32A/233A/2 42/243 15

Shutdown Supply Current MAX222S42

TA - +25'C 0.1 10

TA-O'Cto+70'C 2 50 pA

Ta - -40°C to *85*C ² ^SO

TA--55°CtO+125°C 35 100

SHDN Input Leakage Current MAX 222/242 ±1 uA

SHDN Threshold Low MAX222&42 1,4 0,8 V

SHDNThreshold High MAX222&42 2.0 1.4 ^V

Transition Slew Rate

Cl - 50pF to 2500pF, RL-3ki3to7kQ, Vcc-5VTa-+2S°C measured from *3V to -3V or -3V to +3V

MAX222/2 32A/2 33Af2 42/243 6 12 30 V/ps

MAX220 1,5 3 30

Transmitter Propagation Delay TLLto RS-232 (normal operation), Figure 1

IPHLT

MAX222/232A^2 33A/2 42/243 1.3 3.5

MAX220 4 10 ps

tpLHT

MAX222/232Ar2 33A/242/243 1,5 3.5

MAX220 5 10

Receiver Propagation Delay RS-232 to TLL (normal operation), Figure 2

tPHLR

MAX222/232AI233A/242/243 0,5 1

MAX 220 0,6 3

tPLHR

MAX222/232A& 33A/2 42/243 0,6 1

MAX220 0,8 3

Receiver Propagation Delay RS-232 to TLL(shutdown). Figure 2

tPHLS MAX242 0,5 10

tPLHS ^MAX242 2.5 10

Receiver-Output EnableTime, Figure 3 tER ^MAX242 125 500 n s

Receiver-OutputDisableTim©, Figure3 tDR MAX242 160 500 n s

Transmitter-Output Enable Time (SHDN goes high). Figure 4 ^tET

MAX222/242, O.luF Caps

(Includes chargs-pump start-up) ²⁵⁰ ^{u s} Transmitter-Output Disable Time

(SHDN goes lev;). Figure 4 ^tDT MAX222/242, O.lpFcaps ^eoo ^{n s}

Transmitter + to - Propagation

Delay Difference (normal operation) tPHLT-tPLHT

MAX222/2 32A/2 33A/2 42/243 3O0

MAX220 2O00

Receiver + to - Propagation

Delay Difference (normal operation) tPHLR-tPLHR

MAX222/232A/2 33A/2 42/243 100

MAX220 225

Note 2: MAX243 R2out Is guaranteed to be low when R2in Isa 0V or is. floating.

**+5V*Powered, Multichannel RS-232**

Drivers/Receivers

TOP VIEW

ci. fT v.[T ci.[T C2'[T C2-[I KffllE

T ^ -

A U X M d ,WW2?C M4XKS4

DIP/SO

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CAPACITANCE (11F)

IIP/ICE CI a CI CI C5

MAXZ20 4 J 4.7 10 10 1./

MAXZ32 ID I.D 10 1.0 liJ

MAX23!* 0.1 0.1 0,1 0.1 0.1

T1UCM0S.

wuis

ITUCMH OUTPUTS

.SVWUI q

— 116

a, 'to

CI- WUAGECaJBLER Q+ ,1QV'10-!CM v.

C2- VOLTWiE INVERTER .6V

Tim 1 I X . "CUT

•^0-^

I§JL

^

400k-

i i l

Rlam RIIH

R&iit ZJSa.

GIID ~

6 -10V

^C4

.RS-232 COIPUIS

,RS-DZ INPUTS

Piaffe 5. fl<AX220/MAX232/}MX232A Pin Configuration and Typical Operating Circuit

TCP VIEW

|H.O EN fj cu[T v.[T ci. [T cz,[7 C2-[T v-[T R2"E

T^"

AUXLM fUlXM2

DIP/SO

Ji]SHOH n]vcc ]s]giid IT] How jT| RllM Tj]r1cut

j(i] RJcut (H.CJEN[T

ci. [7 v-rj ci-[J C2t|T G-[T v-[T 12aii! [e Raw [9 ifflwDa

WX24?

SSOP

() ARE r0RMAXH2 ONLY.

FillNUMBERS MTYPEM. CPERfllhECIBOJIT AFE FQRHPfSG PKK*GrSCM.Y.

a] SHDN HVa ja]6ND I] H.C.

m r«n

is] NX ij]T2iN

Figure 6. MAX222/MAX242 Pin Configurations andTypical Operating Circuit

^j?—

APPENDIX I

Ultrasonic Sonar Detectors

Data Pack E

Data Sheet

A range of two transducers operating at 40kHz approximately and designed for ultrasonic transmission and reception. The ultrasonic transmitter, 307-351 is capable of emitting 106dB (OdB =2x 10"*|jbar) and the receiver 307-367 has a sensitivity of -65dB(QdB = l/ybar/VVmetre).

Characteristics

Item Unit 30T-3E1 307-367

Transmitling _

sensitivity ^dB*l ¹⁰⁶ ^-

Receiving Mv

sensitivity dB*3 -65

Resonant frequency „

(transmitting) hTSV ^kHz*3 ⁴⁰⁺¹ ^-

Resonant frequency „

(receiving) ftmv ^kHzH ⁴⁰⁺¹

Directional angle o'h ^° ²⁰ Maximum input voltage Vrms 20 -

impedance ^fi

Approx.

soo

Approx, 30k

Capacitance pF ^1100+20%

Pulse rise time msec, 2,0 0.5

Maximuminputvoltage

for pulse operation Vp,p 60 -

Temperature range °c -20 to +80

Transmitting q^

selectivity

Approx.

70 ^-

Receiving Qmv

selectivity

Approx.

*lQdB=3xlO"'libar

*3 00B=lV/ubar

"3 Frequency where Banamitiing sensitivity 19 maximum

*i Frequency where receiving sensitivity 13maymium

Shape and dimensions

Unit mm

I3FT

Issued March 1997 232-2267

Ultrasonic transducers

RS stock numbers307-351,307-367

These units can be used for the transmission of continuous wave ultrasonic sound or for pulsed sound applications

Applications Burglar alarm systems Proximity switches Liquid level meters Anti-collision devices Counters for moving objects TV remote control systems.

Frequency response (transmitting)

1™

1 80

i „

f N

- -

/

1 k

^{^}

. /y

Frcqu

FI*tiiLinvv<K4ll

ncy response (receiving)

10 « «•-

232-2267

Effect of parallel capacitance Pulse response (transmitting) Pulse response (receiving)

Directionai radiation pattern

I I

•WWHI :-•

"T/-

s1 ^\

I t I

! ' 1-4-

' :

lirseui I

, i •:••;

i 1 Temperature characteristics TRANSMITTER &RECEFVER

C-.iO'o

Il'i

^„

-<G K Q 30 40 ttS HU

Tfinpfnil.irr: iT.t

The following circuits show how the transducers may Note; Thereby energises when a signalis received be used in remote control applications. Either of the from the transmitter.

transmitter circuits may be used with the receiver. The frequency of oscillation is adjusted by means of VR1 for maximum sensitivity. The CMOS circuit allows direct interfacing with logic circuitry. !n trie receiver VR2 is adjusted for maximum sensitivity.

Transmitter using S55 timer i.e.

IT1(1 n *

. » J

I •> TIMLH ' '

Receiver

Transmitter using CMOS gate i.e. 400 IB

iBYB 40 oil rmnOKtl SO*-351

Ji-

Lli *f ii H T

P-WHMTfflmirlf

The information provided in RSleahncsllilaralura is behaved lo be accurate arei rebable; however. S3 Componentsassumes no responsbihty for or omusons, or far the use d this irtoirnabon, and all use ot such intarrnauon shall be ertireJy at the user's own risk.

Noi&sponsibiliiy is assumedby RSComponents tor anyin&mgaiisilsol patentsor WJBrrioWscfihird partes whidimayrasulttern itsuss Spea&calionsshownin ES Componentstechno alliteratureale subject 10change withoutnotice

RS Components, PO Box 99, Corby, Norfnants, NN17 9RS flj An Hectrocctnpmenta Company

Telephone: 01536 201234

APPENDIXJ TLP&RLP434ARFTransmission •mjm4A&mm$4A;RFASKHybridModulesforRadioConlrol(NewVersion) TLP434AUltraSmallTransmitter Easy-Link Wireless

-Tfl®

II

pin1:OND pina:OsUIn pin3:Vcc pinA:Antenna(flFoutputJ

TTTI

Frequency315,418and433.92Mhz Modulation:ASK OperationVottngs:2-12VOC Symb-JParameterCondition-MinTypMaxUnit VceOperatingsupplyvoltage2.0-12.0V let1PeakCurrent(2V)-1.6=)mA ice2PeakCum:ni02Vj

„19AmA VbInputHighVollaqeld.na=lOOuA(High)Vcc-O.5VceVcc+0.5V V!Input1j>wVollagc[d3ta=OuA(I_oiv)--0.3V roAbsoluterrctjuencySISMhitnorfute1I4.K315315.2MIL-. POKi-OutputI'.nver-SOuhmVcc=9V-I2V16-dUm Vet=5V-C.V-14-dllm l>RDataRuleExternalKncodins5124.8K200KbpS Motet;{CraseTemperature=25°C+•2°C.TestJjiadImpedance=50ohm) ApplicationCircuit: 'topicalKey-chainTransmitteri ilaliekSeniitondueiofInc. HT12E

:ingKTI2E-18D1P,aBinary12bitEncoderfrom Vdd. RFoutpul RLP434ASAWBasedReceiver

-II TTTT TTTT

pin1:Ond pin2:DigitalDaUOutput pln3:LinearOutput/Teat pin4;Vcc pin5:Vcc pin8:Ond pin/:<&kJ ptnO:Antenna Modulation:ASK Frequency31S,41Sand433.92MhzSupplyVoltage:3.3-6.0VOC Output:Digital&Linear SymbolPju-amelcrConditionsMinT>PMa„ VccOperatingsupplyvintage3.35.0VCOV lit*OperatingCurrent

-4.5mA VdataDataOutldata=+2(X)>iAfHigh)Vcc-D-SVccV Mala=-10uAtI.«w)--0.3V ElectricalOharacieristics CharacteristicsSYMMil.Typ|MasUnit OperationRadioFrequencyFC_115.4ia.md4.1.1.92MH/. SensitivityPref-110dBm ChannelWidth-i-500Kh/ NoiseEquivalentBW4Khz ReceiverTurnOnlime5ITI5 OperationTemperatureTop-20-80c; BaseboardDataRate4.8KHz AppHcaiionCircuit: TypicalRPReceiverusingHT12D-18DIP.; HollckSemiconductorlac.Binary12bitDecoderwith8bituCltT4aRXXfrom A0 AT A2 A3 At A5 A6 A7 Vss

oicl osc2 DIN D11 DID 09 oa

Vdd f5VDC -2GNDANT DiaitalOutGND LinearOutGND VccVcc OuFRLP434A PB0Vdd PB2osc1~~§»xtal PB4Vks Relay" LaipacTechnology,Inc. 105WestBeaverCreekFtJ.Unit207RchmondKillOntarioL4B1C6Canada Tel:(905)762-1228Fax:(905)763-1737e-mail:info**laipac.comLAIPAC TECH

Voico/Spoakot SHiiaMnt«(ace-* LightControl-*^-

PBSPAD PBSPA1 PB7PA2 XXIX

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