Semiconductor
CD22101, CD22102
x 4 x 2 Crosspoint Switch
with Control Memory
CD22101 and CD22102 crosspoint switches consist of
4 x 4 x 2 arrays of crosspoints (transmission gates) with a
4-line to 16-line decoder and 16 latch circuits. Any one of
the sixteen crosspoint pairs can be selected by applying
the appropriate four-line address, corresponding
crosspoints in each array are turned on and off
simultaneously. Any number of crosspoints can be turned
on simultaneously.
In the CD22101, the selected crosspoint pair can be
turned on or off by applying a logic ONE or ZERO,
respectively, to the data input, and applying a ONE to the
strobe input. When the device is “powered up”, the states
of the 16 switches are indeterminate. Therefore, all
switches must be turned off by putting the strobe high,
data-in low, and then addressing all switches in
succession.
The selected pair of crosspoints in the CD22102 is turned
on by applying a logic ONE to the K
A
(set) input while a
logic ZERO is on the K
B
input, and turned off by applying
a logic ONE to the K
B
(reset) input while a logic ZERO is
on the K
A
input. In this respect, the control latches of the
CD22102 are similar to SET/RESET flip-flops. They differ,
however, in that the simultaneous application of ONEs to
the K
A
and K
B
inputs turns off (resets) all crosspoints. All
crosspoints in both devices must be turned off as V
DD
is
applied.
February 1999
Features
[ /Title
(CD22
101,
CD221
02)
/Sub-
ject
(CMO
S4x4
x2
Cross-
point
Switch
with
Con-
trol
Mem-
ory)
/
Author
()
/Key-
words
(Har-
ris
Semi-
con-
ductor,
Tele-
com,
SLICs,
SLACs
, Tele-
phone,
Tele-
phony,
WLL,
Wire-
less
T
CMOS 4
E PRODUC
NT
OBSOLET
PLACEME
ENDED RE
47
O RECOMM cations 1-800-442-77
N
l Appli
om
Call Centra : centapp@harris.c
or email
Description
• Low ON Resistance . . . . . . . . . . . . 75Ω (Typ) at V
DD
= 12V
• “Built - In” Latched Inputs
• Large Analog Signal Capability . . . . . . . . . . . . . . .
±V
DD
/2
• Switch Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . 10MHz
• Matched Switch Characteristics
∆R
ON
= 8Ω (Typ) at V
DD
= 12V
• High Linearity - 0.25% Distortion (Typ) at f = 1kHz,
V
IN
= 5V
P-P
, V
DD
- V
SS
= 10V, and R
L
= 1kΩ
• Standard CMOS Noise Immunity
Applications
• Telephone Systems
• PBX
• Studio Audio Switching
• Multisystem Bus Interconnect
Ordering Information
PART
NUMBER
CD22101E
CD22101F
CD22102E
TEMP.
RANGE (
o
C)
-40 to 85
-55 to 125
-40 to 85
PACKAGE
24 Ld PDIP
24 Ld CERDIP
24 Ld PDIP
PKG. NO.
E24.6
F24.6
E24.6
Pinouts
CD22101
(PDIP, SBDIP)
TOP VIEW
B 1
C 2
X2' 3
Y1' 4
Y2' 5
X4' 6
X3' 7
Y4' 8
Y3' 9
X1' 10
D 11
VSS 12
24 VDD
23 A
22 X2
21 Y1
20 Y2
19 X4
18 X3
17 Y4
16 Y3
15 X1
14 DATA
13 STROBE
B 1
C
2
Functional Diagram
CD22102
(PDIP)
TOP VIEW
24 VDD
22 X2
21 Y1
20 Y2
19 X4
18 X3
17 Y4
16 Y3
15 X1
14 K
A
13 K
B
IN (OUT)
16
ADDRESS
23 A
DECODER
LATCH
16
CONTROL
IN (OUT)
16
4X4
SWITCH
OUT (IN)
X2' 3
Y1' 4
Y2' 5
X4' 6
X3' 7
Y4' 8
Y3' 9
X1' 10
D 11
VSS 12
4X4
SWITCH
OUT (IN)
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
©
Harris Corporation 1999
File Number
2871.3
4-193
HARRIS [ HARRIS CORPORATION ]
