Details, datasheet, quote on part number: MA589
PartMA589
Category
Description
CompanyZarlink Semiconductor
DatasheetDownload MA589 datasheet
Quote
Find where to buy
 
  

 

Features, Applications
THIS DOCUMENT IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS
LD/DTMF SWITCHABLE DIALLERS WITH DEDICATED KEYS FOR 20 MEMORIES

The MA589 family are keypad switchable LD/DTMF dialler devices with a last number redial facility and twenty 24-digit memories, each with its own dedicated dialling key. Three operating modes are available: LD only mode, DTMF only mode and LD mode with the ability to switch temporarily to DTMF mode from the keypad during a call. This last mode enables subscribers to access such services as home banking Mixed LD and DTMF numbers can also be stored in memory. The-MA589 devices are pin compatible with the GPS switchable dialler families MA547, MA585 and MA587 - providing a complete range of telephone features within a single PCB and circuit design. Metal mask and pin selectable options are available to service specific requirements of particular countries and customers.

FEATURES

Selectable Loop-Disconnect or DTMF Modes Keypad Switchable LD to DTMF 20 X24-Digit Memories, each with Dedicated Key 24 Digit Last Number Redial Selectable Make/Break Ratios 2:1 and 3:2 Uses Inexpensive 560kHz Ceramic Resonator Battery-less operation - Low Power CMOS Mask Programmable Options to suit Application Timed Break Recall (Flash) and Earth Recall

Pin number Pin name NC IMP SELECT MASK OSC OUT OSC IN FILT IN FILT OUT HSW VSS VDD PAUSE OUT MF OUT MUTE ROW6 ROW7 Function Not connected 'Loop disconnect' dialling output LD/DTMF selection, IDP and B/M radio programming Output to disable speech circuit during pulse dialling and recall (see note 1) Connections for 560kHz ceramic resonator Unity gain amplifier input and output for DTMF tone filtering Hookswitch input - a logic 1 at this pin is used to indicate 'Off-hook' Negative supply Positive supply Active high output indicating a pause when dialling from memory Unfiltered DTMF output Output active during keying and tone transmission (see note 2)

1. MASK may be used to disconnect the whole speech circuit in order to maintain the break condition whilst on-hook and during a TBR (Timed Flash) operation. 2. MUTE is provided to disable the microphone while maintaining the loop condition during DTMF transmission.

Power-on When power is applied to the chip, a power-on reset circuit operates and ensures that the last number redial store is cleared and all logic is reset. The power-on reset circuit is designed such that if the chip supply voltage drops to a level at which the LNR store may be corrupted, it will always, under all conditions, clear the store when power is restored, so that corrupt data is not retained. Hookswitch Operation The HSW input is used to inform the MA589 of whether the telephone on or off hook. Logic `0' is recognised as on-hook, Logic `1' is recognised as off-hook. When the HSW input rises from to `1' the off-hook state is recognised immediately and keypad inputs are accepted. However, when the HSW input falls from to `0' the onhook state is not recognised for 200300ms. This is so that short line breaks of less than 200ms, such as line reversals applied bv the exchange, are ignored. In this case the IMP and MASK outputs will go low immediately the HSW input goes low in order to preserve current, but will resume normal operation immediately HSW goes high. On-hook state In the on-hook state all chip outputs are set low, the oscillator circuit is inhibited and no key inputs are accepted. This conserves supply current so that the LNR store contents may be retained.

Off-hook state When the HSW input goes high, the MASK output immediately goes to the logic `1' level and remains there until going on-hook or signalling a TBR, (see timing diagram). COLUMN outputs also go high until a key is pressed. The oscillator circuit remains inactive until a key is pressed, and is normally off whenever timing functions are not required. Keypad Operation A single contact, normally open keypad is required. When off-hook the COLUMN outputs are normally held high and the ROW inputs are low. When a key is pressed this connects a COLUMN output to a ROW input and the ROW input is pulled high. This action initiates keyboard scanning. During keyboard scanning, the COLUMN outputs are normally low but generate scanning pulses at 7ms intervals on each output in sequence. A key is accepted as valid when, two successive scanning pulses from the same COLUMN are seen on a ROW input. Hence, the minimum bounce-free key closure period which is necessary to guarantee detection is about 14ms (plus the oscillator start-up time if it was not already running). Simultaneous key depressions If two keys are pressed simultaneously (i.e a second key is pressed before the first has been verified) neither key will be accepted until both keys are released and the correct key is pressed again.


 

Some Part number from the same manufacture Zarlink Semiconductor
MA6116
MA805
MA805
MA8055
MA808
MA808
MA8112
MA818
MA8251
MA8255
MA828
MA838
MA857
MCT83000
MCT83100
MCT83100
MD4330B
MDS105AL Description = 5-Port 10/100 MBS Ethernet Switch ;; Package Type = PQFP ;; No. Of Pins = 208
MDS108AL Description = 9-Port 10/100 MBS Ethernet Switch ;; Package Type = PQFP ;; No. Of Pins = 208
MDS112CG
MDS112CG
Same catergory

Am29LV642D : . 128 Megabit x 16-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/O Control s Two 64 Megabit in a single 11 mm Fortified BGA package (Note: will be described for each internal Am29LV640D) s Two Chip Enable pins Two CE# pins to control selection of each internal Am29LV640D devices s Single power supply operation to 3.6 volt read, erase,.

KBU8 : . Plastic material used carries Underwriters Laboratory Flammability Classification 94V-0 This series is UL listed under the Recognized Component Index, file number E54214 High case dielectric strength of 1500 VRMS Ideal for printed circuit boards High forward surge current capability High temperature soldering guaranteed: 250C/10 seconds, 0.375 (9.5mm).

UFT3005 : Zener Voltage Regulator Diode.

ZHCS756TA : Diode Schottky Sot-23. SOT23 SILICON HIGH CURRENT SCHOTTKY BARRIER DIODE "SuperBAT" ISSUE 1- NOVEMBER 1997 : Low V F High Current Capability APPLICATIONS: - DC converters Mobile telecomms PCMCIA PARTMARK DETAIL: S76 7 PARAMETER Continuous Reverse Voltage Forward Current (Continuous) Forward Voltage = 750mA Average Peak Forward Current; D.C. = 50% Non Repetitive Forward Current.

M2034D6QCN : 3.2 x 5.0 x 1.3 mm Hcmos Compatible Surface Mount Oscillators. 20 ppm stability Tri-state or standby function Ideal for WLAN and IEEE802.11 Applications Low power applications MtronPTI reserves the right to make changes to the product(s) and service(s) described herein without notice. No liability is assumed as a result of their use or application. Please see www.mtronpti.com for our complete offering and detailed.

AD9381/PCB : HDMI Display Interface. Internal HDCP keys HDMI interface Supports high bandwidth digital content protection RGB to YCbCr 2-way color conversion V/3.3 V power supply 100-lead Pb-free LQFP RGB and YCbCr output formats Digital video interface HDMI 1.1, DVI 1.0 150 MHz HDMI receiver Supports high bandwidth digital content protection (HDCP 1.1) Digital audio interface HDMI 1.1-compatible.

08052F2M7B20D : Surface-mount Ceramic Multilayer Capacitors. Five standard sizes High capacitance per unit volume Supplied in tape on reel NiSn terminations. QUICK REFERENCE DATA Rated voltage UR (DC) Capacitance range (E6 series) Tolerance on capacitance Test voltage (DC) for 1 minute: Sectional s APPLICATIONS Consumer electronics, for example: - Tuners - Television receivers - Video recorders - All types of cameras.

KKX485D : Low-power, Slew-rate-limited Rs-485/rs-422 Transceivers. General The KKX485 is low-power transceivers for RS-485 and RS422 communication. IC contains one driver and one receiver. The driver slew rates of the KKX485 is not limited, allowing them to transmit to 2.5Mbps. These transceivers draw between 120A and 500A of supply current when unloaded or fully loaded with disabled drivers. All parts operate from.

GDZJ11 : Axial LEAD Zener Diodes. 500mW Power Dissipation Ideally Suited for Automated Assembly Processes Pb free product are available 99% Sn above can meet Rohs environment substance directive request Case: Molded Glass DO-35 Terminals: Solderable per MIL-STD-202G, Method 208 Polarity: See Diagram Below Approx. Weight: 0.13 grams Mounting Position: Any Ordering information: Suffix.

APTGF660U60D4 : Single Switch NPT IGBT Power Module. Application Welding converters Switched Mode Power Supplies Uninterruptible Power Supplies Motor control Non Punch Through (NPT) fast IGBT - Low voltage drop - Low tail current - Switching frequency to 50 kHz - Soft recovery parallel diodes - Low diode VF - Low leakage current - Avalanche energy rated - RBSOA and SCSOA rated Kelvin emitter for easy.

MR0A08ACTS35C : 64K x 16-bit 3.3-v Asynchronous Magnetoresistive RAM. Freescale Semiconductor Data Sheet: Advance Information Introduction The a 1,048,576-bit magnetoresistive random access memory (MRAM) device organized as 65,536 words of 16 bits. The MR0A16A is equipped with chip enable (E), write enable (W), and output enable (G) pins, allowing for significant system design flexibility without bus contention. Because.

102.1947 : SEALING CAP, MATING FACE OF RECEPTACLE. s: Series: - ; Accessory Type: Sealing Cap ; For Use With: Mating Face of the Receptacles ; Connector Shell Size: - ; Connector Body Material: -.

D38999/26KJ19PN : Stainless Steel Free Hanging (In-Line) Circular Connectors, Interconnect Plug, Male Pins; CONN PLUG 19POS STRAIGHT W/PINS. s: Connector Type: Plug, Male Pins ; Shell Size - Insert: 25-19 ; Mounting Type: Free Hanging (In-Line) ; Fastening Type: Threaded ; : Shielded ; Packaging: Bulk ; Number of Positions: 19 ; Termination: Crimp ; Shell Material, Finish:.

770365-1 : Free Hanging (In-Line) Rectangular - Housing Connectors, Interconnect Male or Female; CONN PLUG HSNG 2POS FREE HANGING. s: Color: Natural ; Contact Termination: Crimp ; Contact Type: Male or Female ; Mounting Type: Free Hanging (In-Line) ; Number of Rows: 1 ; Pitch: 0.248" (6.30mm) ; Packaging: Bulk ; Connector Type: Plug ; Fastening Type: Detent Lock.

FLL171ME : L BAND, GaAs, N-CHANNEL, RF SMALL SIGNAL, JFET. s: Polarity: N-Channel ; V(BR)DSS: 15 volts ; Number of units in IC: 1.

MBRB760-G : 7.5 A, SILICON, RECTIFIER DIODE. s: Rectifier Configuration / Technology: Schottky ; Package: D2PAK, GREEN, PLASTIC, D2PAK-3 ; Number of Diodes: 1 ; IF: 7500 mA ; RoHS Compliant: RoHS.

 
0-C     D-L     M-R     S-Z