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EM91810A/B EM91810A/B
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
GENERAL DESCRIPTION
The EM91810A/B are Tone/Pulse switchable dialer which are fabricated in CMOS technology with wide operating voltage for both tone and pulse mode, and consumes very low memory retention current in ON-HOOK state. EM91810A/B also provide SDO (serial data output) function to drive LCD driver (EM32100, EM32116, EM32117) and voice synthesizer. FEATURES * * * * * * * * Tone/pulse switchable dialer. One 32-digit last number redial memory. Pulse to tone (PT) is provided for PBX operation. Flash key is available. Minimum tone duration is 98ms or 83ms. Minimum intertone pause is 98ms or 83ms. Uses 3.579545 MHz crystal or ceramic resonator. Many options can be selected. Mode (10 PPS ; 20 PPS ; Tone) M/B ratio (40 : 60 ; 33 : 66) Pause time (3.6s) Flash function (RESET) PT pause time (3.6s) Flash time (600ms; 300ms; 100ms; or 80ms). Mixed dialing. Handfree function is provided for speaker phone application. Power on reset circuit is provided. Package in DIP18 or DIP20. SDO function that is supported to drive LCD driver (EM32100) and voice synthesizer to indicate dialing number. Key tone function is provided.
*
* * * * * *
PIN ASSIGNMENTS
EM91810A
C2 C3 C4 C1 OSCI OSCO XMUTE VSS SDO 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 R3 R2 R1 R4 TONE PO HKS VDD KT C2 C3 C4 C1 OSCI OSCO XMUTE V SS HFI SDO
EM91810B
1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 R3 R2 R1 R4 TONE PO HKS VDD HFO KT
* This specification are subject to be changed without notice.
10.1.1997
1
EM91810A/B
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
KEYBOARD ASSIGNMENT C1 1 4 7 *or*/T C2 2 5 8 0 C3 3 6 9 # C4 PT F P RD 1). PT 2). F 3). RD 4). P 5). */T : In pulse mode, execute PT function. : Flash key. : Redial key. : Pause key. : In pulse mode, execte PT function In tone mode, execte "*" key.
R1 R2 R3 R4
FUNCTIONAL BLOCK DIAGRAM
XMUTE SDO HFO V DD
PULSE GENERATOR
COL1
OUTPUT INTERFACE CKT.
COLUMN INTERFACE CKT.
KT
PO
COL2 COL3 COL4
KERNEL CONTROL CKT.
DECODER & DATA LATCH LNB MEMORY
OSCI OSCO
OSC.
DIVIDER
ROW1 ROW2 ROW3 ROW4
ROW INTERFACE CKT.
ROW/COLUMN PROGRAMMING COUNTER
D/A CONVERTER INPUT INTERFACE CKT.
TONE
DIALING SIGNAL OPTION :
a]:Flash time: Row3 Row4 flash time(ms)
NR NR R R NR R NR R 600 300 100 80 UR UR NR R PULSE PULSE 10PPS 10PPS 40:60 33:66 b).
Row1 Row2 MODE PULSE RATE
R R NR NR NR R NR R TONE TONE PULSE PULSE 20PPS 20PPS
HKS
V SS
HFI
M/B
40:60 33:66
c]:Tone function: Col1
NR R
Tone Duration
98 ms 83 ms
inter-Tone Pause
98 ms 83 ms
d]:Key type select Col2 *or*/T select
NR R * */T
Note: NR:no resistance. R : A resistance connect to Vss (820K typically) UR: A resistance connect to VDD
10.1.1997 2
* This specification are subject to be changed without notice.
EM91810A/B
TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
PIN DESCRIPTION
Symbol C1 C2 C3 C4 Function Provides keyboard scanning . a. Keyboard scanning: HKS pin is LOW, the column group stays in "HIGH" stays and row group stays in "LOW" state. The key pad is compatible with the standard dual contact matrix keyboard (as Figure 1b.), the inexpensive single contact keyboard (as Figure 1a.), and electronic input (as Figure 1c.). When HKS is "low", a valid key entry is defined by related Row & Column connection or by electronic input; (as show in Figure 1c). Activation of two or more keys will result in no response, except for single key. To avoid keyboard bouncing error, this chip provides built-in debounce circuit. (The debounce time = 20 ms.) Row Column
R1 R2 R3 R4
Figure 1a : Single contact form keyboard configuration Row Column Figure 1b : Dual contact form keyboard configuration Row Column
V DD V SS V DD V SS
Figure 1c : Electronic signal input keyboard configuration OSCI OSCO Oscillator input & Oscillator output pins. The 3.579545 MHz oscillator is formed by a built-in inverter inside of this chip and by connecting a 3.579545 MHz crystal or a ceramic resonator across the OSCI and OSCO pins. (built-in feedback resistor and capacitor) When HKS is "low", a valid key-in may turn on this oscillator and generates a 3.579545 MHz clock. Mute output pins. NMOS open drain output structure. The output is in "low" state during dialing sequence (both Pulse and Tone mode) otherwise this pin is "high-impedance" . Long (continue) Mute. Negative power supply pin. Positive power supply pin. Hook switch input pin. When the handset is in ON-HOOK state, this pin must be pulled "high" in order to disable the dialing operation and decrease the power consumption. When in OFF-HOOK state, the HKS pin must be pulled "low" state for all function operation. Pulse output signal pin. NMOS open drain output structure. The output is "low" during pulse dialing and Flash operation, otherwise this output is "floating".
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XMUTE
VSS VDD HKS
PO
* This specification are subject to be changed without notice.
EM91810A/B
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
Symbol TONE
Function Dual Tone Multi-frequency output pin. In TONE mode, when a entry of digit key (include * , # key), this pin will sent out a corresponding DTMF signal. The TONE pin provides minimum tone duration (tTD),& minimum intertone pause time to support rapid key-in. If key-in time is less than tTD , DTMF signal will last for tTD , otherwise the tone duration will last as long as the key is pressed. Handfree input control pin. Toggle input sturcture, falling edge trigger. It is used to enable and disable Handfree function. With waveshaped by a built-in Schmit trigger, the bounce of input can be eliminated by external R, C debounce circuit. A built-in pull up resistor is 200K typical. Handfree output pin. Inverter output structure (normally "low", active "high"). When a HFI pin is active, Handfree function will be enabled (HFO=1) or disabled (HFO=0). When the Handfree function is enable (HFO=1), after OFF-HOOK action, it can reset Handfree function and HFO pin return to "low" state. Serial data output pin. NMOS open drain output structure. When there is a valid entry on keyboard, this pin will output a serial data. This serial data is designed to drive LCD driver to display dialing number on LCD screen or drive voice synthesizer to announce dialing number to speaker. Key tone output pin for key pad input. The key tone duration is the same as the key pressed time. No matter at Tone mode or pulse mode. Inverter output structure.
HFI
HFO
SDO
KT
FUNCTION DESCRIPTION Keyboard Operation Symbol definitions: a). : OFF-HOOK or enable Hand Free function. b). : ON-HOOK or disable Hand Free function. c). : Input level from low to high. d). : Input level from high to low. e). D1.....Dn : Digit key; 1,2,3,4,5,6,7,8,9,0,*,# (C1.....Cn is same as D1.....Dn ). f). DP1... DPn : Pulse digit ; 1,2,3,4,5,6,7,8,9,0, (CP1... CPn is same as DP1... DPn). g). D t1....Dtn : Tone digit ; 1,2,3,4,5,6,7,8,9,0,*, # (Ct1....Ctn is same as Dt1....Dtn). h). tF : Flash time. i). t P : Pause time. j). t PT : Pulse to Tone wait time. k). tFP : Pause time for flash. l). t RP : Pause time for redial. m). LNB : Last number redial buffer.
* This specification are subject to be changed without notice.
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EM91810A/B
TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
A. Normal Dialing 1. Digit Dialing Procedure : D1,D2 . . . . . ., Dn Dial out : Dt1, Dt2 . . . . . . ., Dtn in tone mode Dial out : Dp1, Dp2 . . . . . ., Dpn in pulse mode LNB : D1, D2 . . . . . . Dn 2. Dialing with flash key Procedure : F,D1,D2 . . . . . ., Dn Dial out : tF, Dt1,Dt1 . . . . . . ., Dtn in tone mode Dial out : tF,Dp1,Dp1 . . . . . . ., Dpn in pulse mode LNB : D1, D2 . . . . . . . Dn 3. Dialing with PT key Procedure : D1, D2 . . . . . .,PT, . . . . . , Dn Dial out : Dp1, Dp2, . . . . tPT, . . . . . , Dtn in pulse mode LNB : D1, D2 . . . . . ,PT, . . . . Dn Note : If key in digit over maximum digit stored in LNB, then RD is inhibited even after on/off hook. B. Mixed dialing Procedure : D1, D2 . . . . . .,PT, D9,D10, . . . . . , Dn Dial out : Dp1, Dp2, . . . . tPT, Dt9,Dt10 . . . . . , Dtn LNB : D1, D2 . . . . . ,PT, D9,D10 . . . . Dn C. Redial LNB : D1, D2 . . . . . Dn Procedure : RD Dial out : Dt1, Dt2, . . . . Dtn in tone mode Dial out : Dp1, Dp2, . . . . Dpn in pulse mode Note : If key in digit over maximum digit stored in LNB, then RD is inhibited. D. Pause Function Procedure Dial out Dial out LNB : D1, D2, . . . .Dn, P, C1 . . . . .Cn : Dt1, Dt2, . . . . Dtn , tp, Ct1 . . . . . . . . . Ctn in tone mode : Dp1, Dp2, . . . . Dpn,tp, Cp1 . . . . . . . . .Cpn in pulse mode : D1, D2 . . . . . Dn, P, C1, C2 . . . . . . . . . .Cn
E. Flash Function 1. Reset Procedure Dial out Dial out LNB : D1, D2, . . . .Dn, F, C1 . . . . .Cn : Dt1, Dt2, . . . . Dtn , tF,Ct1 . . . . . . . . . Ctn in tone mode : Dp1, Dp2, . . . . Dpn, tF,Cp1 . . . . . . . . .Cpn in pulse mode : C1, C2 . . . . . Cn
* This specification are subject to be changed without notice.
10.1.1997
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EM91810A/B
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
Handfree function operation: A). To execute Handfree function : When HFO = "low", HFI pin is active , the Handfree function will be enabled (HFO="HIGH"). B). Reset Handfree function: a. OFF-HOOK action. b. When HFO="high", a HFI pin is active again , the Handfree function will be reset (HFO="LOW"). Operating flow chart of Handfree
ON HKS (0) INITIAL
OFF HF HF ON
ON HKS (1) HF LINE
OFF HKS
ON HF OFF HF
(2)
OFF HKS (3) HF LINE
STATE NO. (0) INITIAL STATE (1) ON HKS HF LINE (2) OFF HKS LINE (3) OFF HKS HF LINE
PO F F F F
XMUTE F F F F
HFO 0 1 0 1
* Note : ON : ON HKS OFF : OFF HKS HF : Depress HF key
* F : Floating (Hi-impedance) SDO (Serial Data Output) function The SDO is serial data output which format is the same with UART protocol. SDO function is designed to drive LCD driver and voice synthesizer to display dialing number on LCD screen and announce it to speaker. The SDO signal consists of two start bits, six data bits and two stop bits.
0 Start bit 1 Bit0 LSB Bit1 Bit2 Bit3 Bit4 MSB Bit5 0 1 Stop bit
Data bits
The frequency of every bit is 256Hz (about 3.9 ms) There are two categories of dialing data, and representation of serial data is as the following: (b5,b4=0,0) Digit key Key 1 2 3 4 5 6 7 8 9 0 * # P P-T b3b2b1b0 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 Display 1 2 3 4 5 6 7 8 9 0 P (b5,b4=1,0) Function key Key HF F b3b2b1b0 1010 1111 Display F
Note : */T key at pulse mode display " " at tone mode display " "
* This specification are subject to be changed without notice.
10.1.1997
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EM91810A/B
TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
TEST CIRCUIT
1
V+ A
Operation current
2
A
DP DP DT
V+
Standby current
V KEY BOARD
DD
MODE V
V DD VSS
HKS
HKS
SS
3
.
COUNTER AND AC METER TONE 10K
Tone output voltage
V+
4
V+ SPECTRUM ANALYZER
TONE V DD
Tone distortion
V DD
KEYBOARD ENTRY
10K
V
HKS
KEYBOARD VSS
ENTRY
HKS
VSS
** DIST.(dB)= 20log
(V1)**2+(V2)**2+..+(Vn)**2 (VL)**2+(VH)**2
a. V1....Vn are extraneous frequencies (ie, inter modulation and harmonic) components in the 500Hz to 3400Hz band. b. VL,VH are the individual frequency components of the DTMF signal c. Whether keyboard is pushed refer to the TONE mode time diagram 6
A V +
5
Pulse output sink current(
V+ open drain structure) VDD
Flash Key HKS
Keypad input
A V
VEXT
PO
VDD ROW HKS VSS MODE
R* C*
VSS
7
VDD Column A HKS VSS
V+
R* C* MODE
Isink=I/(1-Duty Cycle) I is the net DC current measured from ampere meter. R* , C* mean others column and row.
* This specification are subject to be changed without notice.
10.1.1997
7
EM91810A/B
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
ABSOLUTE MAXIMUM RATINGS (Ambient Temperature is 25C, All voltage referenced to VSS. )
Parameter Power Supply Voltage Input Voltage Range Operating Temperature Storage Temperate Power Dissipation Sym. VDD VIN TOPR TSTO PD Ratings 6.0 -0.3 ~ VDD + 0.3 0 ~ 50 -55 ~125 500 Unit V V C C mw
ELECTRICAL CHARACTERISTICS (I) (Ambient Temperature is 25C, All voltage referenced to VSS , VDD = 2.5V,
unless otherwise noted.) (General purpose specification, fosc. = 3.579545 MHz)
Parameter Operating Voltage
Sym. VDD
Conditions Tone Pulse Memory retension Tone OFF-HOOK, Keypad entry Pulse ON-HOOK, No Keypad entry ON-HOOK, VDD = 1.0V
Min. 2.5 2.0 1.0 VSS 0.7VDD
Typ. 0.6 0.2 0.1 0.1 0.5 10 400 20 200 -
Max. 5.5 5.5 5.5 2 0.5 1 0.2 0.3VDD VDD 1 0.1 30 800 -
Unit V mA mA A A V V A mA A A A ms K mA mA
Operating Current Standby Current Memory retention current Control pin input voltage XMUTE pin leakage current sink current HKS pin input current Keyboard scanning pin drive current sink current Key-in debounce time HFI pin input resistor HFO pin drive current sink current
Iop Is Imr Vil Vih Imth Imtl Ihks Ikbd Ikbs t DB Rhfi
Vxmute = 6.0V Vxmute = 0.5V Vhks = 2.5V *Vn = 0V, *Vn = 2.5V, Vhfi=0
0.2 4 200 0.5 0.5
Ihdoh Vhfo = 2.0V Ihdol Vhfo = 0.5V
* Vn : Input voltage of any keyboard scanning pin (Row group, Column group).
* This specification are subject to be changed without notice.
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8
EM91810A/B
TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
ELECTRICAL CHARACTERISTICS (II) (Ambient Temperature is 25C, All voltage referenced to VSS , VDD = 2.5V,
unless otherwise noted.) (Pulse mode specification, fosc. = 3.579545 MHz)
Parameter Pulse output pin,SDO pin leakage current sink current Pulse rate Make/Break ratio Pre-digit Pause Inter-digit Pause
Sym. Ipoh Ipol fpr TM:TB tPDP tIDP
Conditions Vpo = 2.5V Vpo = 0.5V
Min. 0.5 -
Typ. 10 20 40:60 33:66 40 33 800 500
Max. 0.1 -
Unit uA mA pps pps % % ms ms ms ms
M/B ratio = 40:60 M/B ratio = 33:66 Pulse rate = 10pps Pulse rate = 20pps
ELECTRICAL CHARACTERISTICS (III) (Ambient Temperature is 25C, All voltage referenced to VSS , VDD = 2.5V,
unless otherwise noted.) (TONE mode specification, fosc. = 3.579545 MHz)
Parameter TONE output pin DC level sink current AC level Load resistor DTMF signal: pre-emphasis *distortion Minimum tone duration Minimum intertone pause
Sym. Vdc Itl Vdtmf Rl twist Dist. tTD tITP
Conditions VDD = 2.0V~5.5V Vdtmf = 0.5V Row group, RL = 10K Dist. -23dB VDD = 2.0~5.5V, Column-Row group RL = 10K Auto redial Auto redial
Min.
Typ.
Max. 0.7VDD 170 3 -23 -
Unit V mA mVrms K dB dB ms ms
0.5VDD 0.2 130 155 10 1
-
-
2 -30 98/83 98/83
* Distortion (dB) = 20 log { [(V12 + V22 + V32+...+Vn) 1/2 ] / [(VL2 + VH 2) 1/2 ]}. VL , VH : Row group and Column group signal. V1 ,V2 ,...., Vn : Harmonic signal (BW = 300 Hz~ 3500 Hz).
* Actual frequency output (fosc. = 3.579545 MHz) KEYBOARD SCANNING PIN STANDARD (Hz) R1 f1 697 R2 f2 770 R3 f3 852 R4 f4 941 C1 f5 1209 C2 f6 1336 C3 f7 1477 * This specification are subject to be changed without notice.
OUTPUT (Hz) 699 766 848 948 1216 1332 1472
DEVIATION (%) +0.28 -0.52 -0.47 +0.74 +0.57 -0.30 -0.34
10.1.1997 9
EM91810A/B
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
HKS KEY IN
3 2 3
t DB XMUTE
PO TONE
t ITP
t ITP
t ITP
tTD
OSCO
SDO - - - - - - High impedance NORMAL DIALING
Figure 2: Tone Mode Timing Diagram
HKS KEY IN
3 2 3
t DB XMUTE
t PDP
t IDP
t IDP
t IDP
tM
PO TONE OSCO SDO - - - - - - High impedance NORMAL DIALING
tB
tM
Figure 3: Pulse Mode Timing Diagram * This specification are subject to be changed without notice.
10.1.1997 10
EM91810A/B
TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
HKS
3 2
P->T
KEY IN t DB XMUTE
3
t PDP
PO TONE
tIDP
t IDP
Tpt t ITP
OSCO SDO - - - - - - High impedance
Figure 4: Timing Waveform for mixed dialing Operation (by PT key entry)
HKS KEY IN
1 2 RD
t DB
XMUTE
PO
t
ITP
t
ITP
t ITP
TONE OSCO
tD
tITP
SDO
- - - - - - High impedance AUTO DIALING
Figure 5: Tone Mode Redial Timing Diagram * This specification are subject to be changed without notice.
10.1.1997 11
EM91810A/B
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
HKS KEY IN XMUTE XMUTE
3 2 RD
t
DB
t IDP
PO TONE OSCO
t IDP
t
IDP
t
IDP
SDO
- - - - - - High impedance Figure 6: Pulse Mode Redial Timing Diagram
HKS KEY IN 3 t DB 2 P 3
*PULSE MODE: XMUTE
t PDP
PO TONE OSCO *TONE MODE: XMUTE PO TONE OSCO
t IDP
t IDP
TP
tIDP
t DB
Tp t ITP t ITP t ITP
SDO
- - - - - - High impedance
Figure 7: Pause key operating timing * This specification are subject to be changed without notice.
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EM91810A/B
TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
HKS KEY IN F t DB XMUTE PO
TF
TONE OSCO
SDO
- - - - - - High impedance Figure 8: Flash key operation timimg
HKS KEY IN 2
SDO TTbbb SS012 0 101 bbbTT 3 4 5 SP SP 00000 1
Figure 9: SDO operation timimg
* This specification are subject to be changed without notice.
10.1.1997
13
EM91810A Application Example
IN4004*4 22M 100K HOOK SW ON MPSA92 OFF IN4148 240K 330K ZNR 120V 2K2 2K7 MPSA42 IN4148 Z.D. 5V1 IN4148
APPLICATION CIRCUIT
Tip
Ring
* This specification are subject to be changed without notice.
100/16V 220K 100K .1 470K C945 13 11 100 16V
PO
VDD
1 100K 12
HKS TONE
14
EM91810A
KT XMUTE SDO
10 7
4 C1 1 2 C2 3 C3
2 WIRE TO 4 WIRE SPEECH NETWORK
C4
1 4 7 * 0 PT F P R/P
2 5 8
3 6 9 #
16 17 18 15
LCD Driver
R1 R2 R3 R4 OSCI OSCO
5 6 8
TO HANDSEET
VSS
LCD PANEL 1.5V
VDD
TONE 20PPS 20PPS
3.579545MHz 820k*6
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
10.1.1997
EM91810A/B
14
IN4004*4 100K MPSA92 IN4148
22M
Tip
HOOK ON
ZNR 120V
330K
2K2 200K IN4148 470K C945 + .1 .02 5V1 200 100 16V C945 + 100K 1 0.1F 240K
APPLICATION CIRCUIT
Ring
13 14
3K3 HKS DD 47K C945 PO
16
TONE
V
TONE
20PPS
TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
10.1.1997
10PPS
* This specification are subject to be changed without notice.
15 100K 9
HFI HF KEY XMUTE .1
47K
EM91810B
7 KT HFO 11 12 2 TO 4 WIRE SPEECH NETWORK & AUDIO AMPLIFIER
HFO 5
OSCI 3.579545 MHz
6
OSCO
TO HANDSET 10 SDO
LCD Driver 1.5V LCD PANEL
R1 R2 R3 R4
18 19 20 17
1 4 7 *
2 5 8 0
3 6 9 #
P T F P RD
VSS C4 C3 C2
8 3 2 1
C1
4
SW
820K*6
VDD
.001
EM91810A/B
15
EM91810A/B
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
PACKAGE INFORMATION
Example : EM (1) 91215 P (2) (3) (1) ELAN MICRO. pefix (2) Type number (3) Package code: PPDIP KSkinny RSDIP 18/20/28 Lead Plastic Package
E1
1
E
D
A
A1 L
C B eB e B1
18 PDIP
DIM A A1 B B1 C D E E1 e eB L MILIMETERS MIN. MAX. 5.334 0.381 0.356 0.558 1.150 1.778 0.204 0.381 22.35 23.37 7.620 8.255 6.096 7.112 2.286 2.794 10.92 2.921 4.064
20 PDIP
INCHES MILIMETERS INCHES MIN. MAX. DIM MIN. MAX. MIN. MAX. .210 A 5.334 .210 .015 A1 0.381 .015 .014 .022 B 0.356 0.558 .014 .022 .045 .070 B1 1.150 1.778 .045 .070 .008 .015 C 0.204 0.381 .008 .015 .880 .920 D 25.40 26.67 1.000 1.050 .300 .325 E 7.620 8.255 .300 .325 .240 .280 E1 6.096 7.112 .240 .280 .090 .110 e 2.286 2.794 .090 .110 .430 eB 10.92 .430 .115 .160 L 2.921 4.064 .115 .160 MILIMETERS DIM MIN. MAX. A 6.350 A1 0.381 B 0.356 0.558 B1 1.016 1.778 C 0.204 0.381 D 35.56 37.85 E 15.24 15.88 E1 13.21 14.73 e 2.286 2.794 eB 17.78 L 2.921 5.080
28 PDIP
INCHES MIN. MAX. .250 .015 .014 .022 .040 .070 .008 .015 1.400 1.490 .600 .625 .520 .580 .090 .110 .700 .115 .200
* This specification are subject to be changed without notice.
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16
EM91810A/B
TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
22/24 Lead Plastic Package-Skinny
E1
1
E
D
A
A1 L
C B eB e B1
22 PDIP (skinny)
DIM A A1 B B1 C D E E1 e eB L MILIMETERS MIN. MAX. 4.752 0.381 0.356 0.558 1.27 1.778 0.204 3.556 25.90 26.67 7.620 8.255 6.223 6.604 2.286 2.794 8.382 10.16 2.921 4.064 INCHES MIN. MAX. .180 .015 .014 .022 .050 .070 .008 .014 1.02 1.05 .300 .325 .245 .260 .090 .110 .330 .400 .115 .160 DIM A A1 B B1 C D E E1 e eB L
24 PDIP (skinny)
MILIMETERS MIN. MAX. 4.572 0.381 0.356 0.558 1.27 1.778 0.204 0.381 31.24 32.26 7.620 8.255 6.223 6.731 2.286 2.794 8.636 9.652 2.921 4.064 INCHES MIN. MAX. .180 .015 .014 .022 .050 .070 .008 .015 1.23 1.270 .300 .325 .245 .265 .090 .110 .340 .380 .115 .160
* This specification are subject to be changed without notice.
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EM91810A/B
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
42 SDIP Package
E1
E
D
A A2 C A1 L
D1 B eB e B1
42 SDIP
DIM A A1 A2 B B1 C D E1 e eB D1 L MILIMETERS MIN. MAX. 5.08 0.381 3.937 4.191 0.356 0.559 0.914 1.116 0.204 0.304 36.70 37.34 13.84 14.10 1.727 1.829 15.24 17.78 0 0.127 2.921 3.429 INCHES MIN. MAX. 0.200 0.015 0.155 0.165 0.014 0.022 0.036 0.044 0.008 0.012 1.445 1.470 0.545 0.555 0.068 0.072 0.600 0.70 0 0.005 0.115 0.135
* This specification are subject to be changed without notice.
10.1.1997
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