HAMMOND 1590B

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Item Description: BOX ALUM 4.41X2.38X1.22" UNPTD

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1 + $5.33630






Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

W91590 SERIES
24-MEMORY TONE/PULSE SWITCHABLE DIALER
WITH HANDFREE, HOLD AND LOCK FUNCTIONS
Publication Release Date: July 1995
- 1 - Revision A3
GENERAL DESCRIPTION
The W91590 series dialers Si-gate CMOS IC tone/pulse switchable dialers with a 24-channel
automatic dialing memory, including a 16-digit × 3 emergency dialing memory, a 16-digit × 20
channel repertory memory that provides one-touch and three-touch dialing, and a 32-digit mercury
memory. These dialers also provide flash, clear, hold, and one-key redial functions.
FEATURES
DTMF/Pulse switchable dialer
32-digit LNB (last number buffer) memory (both tone and pulse mode)
32-digit mercury memory (tone/pulse mode)
16-digit × 3 one-touch direct repertory memory (tone/pulse mode)
16-digit × 20 direct or indirect repertory memory (tone/pulse mode)
Uses 9 × 5 keyboard
Flash time: 98 mS, 305 mS, or 600 mS (selectable by keypad option)
Pause time: 3.6 sec.
Pause PT (pulse-to-tone) can be stored as a digit in memory
Minimum tone output duration: 93 mS
Minimum intertone pause: 93 mS
On-chip power-on reset
Uses 3.579545 MHz crystal or ceramic resonator
Packaged in 22, 24 or 28-pin plastic DIP
The different dialers in the W91590 series are shown in the following table:
TYPE NO. PULSE
(ppS)
MEMORY MERCURY
MEMORY
HOLD HANDFREE LOCK
FUNCTION
PACKAGE
W91590 10 20 - - - - 22
W91590L 10 20 - - - Yes 22
W91590A 10 20 - - Yes - 24
W91590AL 10 20 - - Yes Yes 24
W91590B 10/20 24 Yes Yes Yes - 28
W91590BL 10/20 24 Yes Yes Yes Yes 28
W91590C 10/20 24 Save Memory Yes Yes - 28
W91590CL 10/20 24 Save Memory Yes Yes Yes 28
W91590 SERIES
- 2 -
PIN CONFIGURATIONS
R2
R1
R4
1
2
3
4
5 18
19
20
21
22C1
C3
C4
C5
C2
C6
C7
6
7
8
9 14
15
16
17
MODE
DTMF
10
11 12
13
XT
R3
V
DD
V
SS
R5
XT
T/P MUTE
HKS
DP/C9
NC
R2
R1
R4
1
2
3
4
5 20
21
22
23
24C1
C3
C4
C5
C2
C6
C7
6
7
8
9 16
17
18
19
MODE
DTMF
10
11
12
13
14
15
XT
HFO
R3
V
DD
V
SS
R5
XT
T/P MUTE
HFI
HKS
DP/C9
NC
R2
R1
R4
1
2
3
4
5 24
25
26
27
28
C1
C3
C4
C5
C2
C6
C7
6
7
8
9 20
21
22
23
MODE
DTMF
10
11
12 17
18
19
XT
R3
V
DD
V
SS
R5
XT
DP/C9
HKS
13
14 15
16
HFO
T/P MUTE
HFI
C8
KT
DRS
HPM MUTE
NC
W91590
W91590A
W91590B/C
R2
R1
R4
1
2
3
4
5 18
19
20
21
22C1
C3
C4
C5
C2
C6
C7
6
7
8
9 14
15
16
17
MODE
DTMF
10
11 12
13
XT
R3
V
DD
V
SS
R5
XT
T/P MUTE
HKS
DP/C9
LOCK
R2
R1
R4
1
2
3
4
5 20
21
22
23
24C1
C3
C4
C5
C2
C6
C7
6
7
8
9 16
17
18
19
MODE
DTMF
10
11
12
13
14
15
XT
HFO
R3
V
DD
V
SS
R5
XT
T/P MUTE
HFI
HKS
DP/C9
LOCK
R2
R1
R4
1
2
3
4
5 24
25
26
27
28C1
C3
C4
C5
C2
C6
C7
6
7
8
9 20
21
22
23
MODE
DTMF
10
11
12 17
18
19
XT
R3
V
DD
V
SS
R5
XT
DP/C9
HKS
13
14 15
16
HFO
T/P MUTE
HFI
C8
KT
DRS
HPM MUTE
W91590BL/CL
W91590AL
W91590L
LOCK
W91590 SERIES
Publication Release Date: July 1995
- 3 - Revision A3
PIN DESCRIPTION
SYMBOL 22-PIN 24-PIN 28-PIN I/O FUNCTION
Column-
Row
Inputs
17
&
1822
17
&
2024
18
&
2428
I The keyboard input may be from either the
standard 9 × 5 keyboard or an inexpensive
single contact (form A) keyboard. Electronic
input from a µC can also be used.
A valid key entry is defined by a single row
being connected to a single column.
XT,
XT
9, 10 9, 10 11, 12 I, O A built-in inverter provides oscillation with an
inexpensive 3.579545 MHz crystal or
ceramic resonator.
T/P
MUTE
11 11 13 O
The T/P
MUTE
is a conventional CMOS
N-channel open drain output.
The output transistor is switched on during
pulse and tone mode dialing sequence and
flash break. Otherwise, it is switched off.
HPM
MUTE
- - 23 O The HPM MUTE is a conventional inverter
output. During pulse dialing, flash, hold, and
mercury mute functions, this pin will output
an active high. It remains in a low state at all
other times.
MODE 15 17 19 I Pulling mode pin to VSS places the dialer in
tone mode.
Pulling mode pin to VDD places the dialer in
pulse mode (M/B = 2:3).
Leaving mode pin floating places the dialer
in pulse mode (M/B = 1:2).
HKS
12 14 16 I Hook switch input.
HKS
= 1: On-hook state. Chip in sleeping
mode, no operation.
HKS
= 0: Off-hook state. Chip enabled for
normal operation.
HKS
pin is pulled to VDD by internal resistor.
DP
/
C9
13 15 17 O N-channel open drain dialing pulse output
(Figure 1).
Flash key causes
DP
to go active when in
pulse mode and tone mode.
NC 17
(W91590)
19
(W91590A)
22
(W91590B/C)
- No connection.
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