U3761MB TEMIC Semiconductors, U3761MB Datasheet
U3761MB
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U3761MB Summary of contents
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... Low Voltage Standard Telephone Circuit with 13 Memories Description TEMIC’s low voltage telephone circuit, U3761MB performs all the speech and line interface functions required in an electronic telephone set, the tone ringer, the Features Speech Circuit D Adjustable DC characteristic D Symmetrical input of microphone amplifier ...
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... U3761MB Block Diagram / Applications 470 2 (23) Preliminary Information VDD Figure 1. TELEFUNKEN Semiconductors Rev. A2, 23-Apr-97 ...
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... U3761MB OUT 30 GND 12 29 RCK MIC VRING MIC VRIAC MICO 15 26 AGC THA 17 RDC 24 ST TIN 18 23 PRIVACY RECO 1 MUTE 20 21 RECO 2 21 VBG RECIN 22 U3761MB SSO44 Mask MODE HKS VDD 33 OUT 32 31 RCK 30 VRING 29 VRIAC 28 AGC 27 THA PRIVACY 24 RECO 1 23 ...
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... U3761MB Pin Description SDIP40 SSO44 Symbol C2– Earth 34 MFO MFO 9 12 GND 4 (23) Preliminary Information Configuration Keyboard input PD PD Earth key Not connected A built-in inverter provides oscillation with an inexpensive 3.579545 MHz crystal or ceramic PD resonator 40P 40P PD PD 40P 40P PD Output of DTMF ...
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... VI amplifier Ê 1V 50K PD 50K Ê 1V Ê Ê VI Transmit pre-amp output which is Ê Ê normally capacitively coupled to Pin TIN Ê 1V Ê 16K PD Positive supply voltage input to the device. The current through this 16V PD pin is modulated by the transmit signal. PD U3761MB Function 5 (23) ...
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... U3761MB SDIP40 SSO44 Symbol 14 17 RDC AGC RDC 16 18 TIN MUTE MUTE 19 21 VBG 20 22 RECIN 22 24 RECO1 RECO2 RECO1 21 23 RECO2 RECO2 RECO1 6 (23) Preliminary Information Configuration Ê VL Ê Ê Ê 5.6K Ê Ê TIN 16V Ê Ê PD Ê VI 16V ...
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... PD 50V PD Ê Ê 3.4V Ê Ê 0.8V Ê U3761MB Function Input for handset mute The output of the sidetone cancellation signal, which requires a balanced impedance times the subscribers line impedance to be connected to Pin VL. Ringer threshold adjustment The range of transmit and receive gain variations between short and ...
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... U3761MB SDIP40 SSO44 Symbol 30 32 OUT VRING OUT 31 33 VDD VDD 32 36 HKS HKS B MODE MODE Mask 8 (23) Preliminary Information Configuration Buzzer output 200 30V 6.5K PD 50V PD Ê VL Supply output for dialer part Ê Hook switch input. HKS = 1: On-hook state. Chip in sleep mode, no operation ...
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... The R/P key can execute the redial function only as the first key-in after off-hook; otherwise, it executes the pause function. TELEFUNKEN Semiconductors Rev. A2, 23-Apr-97 Preliminary Information Configuration R /T: and pulse-to-tone key M3: One-touch memory D F1, F2, F3: Flash keys D2 , ..., Dn Dn BUSY, Come ON HOOK U3761MB Function Keyboard input OFF HOOK , R/P 9 (23) ...
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... U3761MB Number Store OFF HOOK , ..., 1. If the sequence of the dialed digits D1, D2, ..., Dn has not finished 2. D1, D2, ..., Dn will be stored in memory location and dialed out. OFF HOOK , D1, D2, ..., Dn will be stored in memory location but will not be dialed out R/P and /T keys can be stored as a digit in memory. ...
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... Rev. A2, 23-Apr-97 Preliminary Information IDP t PDP Low Oscillation Figure 2. Pulse mode normal dialing t KRD R/P t K10 IDP IDP t PDP Low Oscillation Figure 3. Pulse mode auto dialing U3761MB t KRD 2 t KID t t IDP IDP t PDP Oscillation 13402 t<t OHD t IDP 13403 11 (23) ...
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... U3761MB HKS KEY IN DP T/P MUTE MASK DTMF OSC HKS KEY KID DTMF t TD T/P MUTE MASK DP Oscillation OSC 12 (23) Preliminary Information t KRD R/P t K10 IDP IDP t PDP Low Oscillation Figure 4. Pulse mode auto dialing ITP ITP High Figure 5. DTMF mode normal dialing ...
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... DTMF T/P MUTE MASK DP OSC TELEFUNKEN Semiconductors Rev. A2, 23-Apr-97 Preliminary Information t t<t KRD OHD R/P t KID ITP High Oscillation Figure 6. DTMF mode auto dialing KRD OHD R/P t KID ITP High Oscillation Figure 7. DTMF mode auto dialing U3761MB t ITP 13406 13407 13 (23) ...
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... U3761MB Access Pause OFF HOOK , The pause function can be stored in memory. 2. The pause function is executed in normal dialing and redialing. HKS KEY KID T/P MUTE MASK DTMF OSC 14 (23) Preliminary Information , R ..., R PDP t P Low Oscillation Figure 8. Pause function Dn’ t IDP PDP ...
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... The Earth pin will go high 400 ms and the pause time will be added when the Earth key is pressed. It can be stored as a digit in Memory and has not the first priority. TELEFUNKEN Semiconductors Rev. A2, 23-Apr-97 Preliminary Information : , ..., D1’ (Tone) */ IDP t P Oscillation Figure 9. Pulse-to-tone operation U3761MB , D2’ , ..., Dn’ 13409 15 (23) ...
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... U3761MB Flash ( F3) OFF HOOK , The dialer will execute flash break and all the flash pause time before the next digits is dialed out. 2. The flash key can be stored as a digit in memory, however, only one flash will be releases to users. 3. The system will return to the initial state after the flash pause time is finished. ...
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... D G –0 – 4 nF, V 0.8 ear RECO = 1.3 gen rms ear max G 60 SPRIV U3761MB = 25 C, unless otherwise specified amb Typ. Max. Unit 1.5 V 4.0 V 4 120 k 47.8 48.8 dB 0.5 dB 0.5 dB –6 – – 72 dBmp dBm –4 dBm 3 dB ...
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... U3761MB DC Characteristics Dialer 3.58 MHz, all outputs unloaded, S9b DD2 OSC Parameters Test Conditions / Pins Memory rentention current HKS = 1, V Pre-emphases Column/Row DTMF distortion output sink current Keyboard input drive current Keyboard input sink current Keyboard resistance F1, F2, F3, E ...
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... Symbol Min. I 2.1 RING V RON V ROFF f 937 RON 1H f 752 out out t off t off Figure 11. Turn off delay time SDIP40 SSO44 SSO44 tape and reel U3761MB Typ. Max. Unit 3.8 mA 23.5 V 5.6 V 1010 1083 Hz 808 868 12.5 14 12459 Package 19 (23) ...
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... U3761MB Basic Test Circuit IDC AC I/O AC I/O IN TESTER 12633 20 (23) Preliminary Information TO TESTER Ê TO TELEFUNKEN Semiconductors Rev. A2, 23-Apr-97 ...
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... Gain change when muted + + log VRECO GRM 20 (Mute VL VGEN = 100 mV/1 kHz open open Input impedance of microphone amplifier + (s6 closed) – (S6 open) TX-mode: VMIC = 3 mV/1 kHz open TELEFUNKEN Semiconductors Rev. A2, 23-Apr-97 Preliminary Information + 20 mA mA) + log VRECO inactive)–20 (Mute VL U3761MB active) 21 (23) ...
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... U3761MB Packaging Information Package SDIP40 Dimensions in mm 37.4 36.9 33.782 1 Package SSO44 Dimensions in mm 18.05 17.80 0.3 0.8 16 (23) Preliminary Information 4.9 4.3 0.7 3.3 0.38 0.20 0.53 0.48 1.778 technical drawings according to DIN specifications 2.35 0.25 0.10 23 technical drawings according to DIN ...
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... TEMIC against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone 7131 67 2831, Fax number 7131 67 2423 TELEFUNKEN Semiconductors Rev. A2, 23-Apr-97 Preliminary Information unauthorized use. U3761MB 23 (23) ...