MT88V32AP Mitel, MT88V32AP Datasheet

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MT88V32AP

Manufacturer Part Number
MT88V32AP
Description
0.3-15V; 15mA; 8 x 4 high performance video switch array. For high-end video routing and switching, medical instrumentation, automatic test equipment (ATE), multi-media communication
Manufacturer
Mitel
Datasheet
1.MT88V32AP.pdf (14 pages)

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Features
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Description
The MT88V32 is a digitally programmable (TTL levels)
8 4 crosspoint switch that is designed to control wide-
band analog (video) signal.
STROBE2
STROBE1
32 bidirectional CMOS "T" switches in an 8 4
non-blocking array
Break-before-make switching configuration
Fast setup & hold times for switch programming
3dB bandwidth of 200MHz
Low feedthrough and crosstalk, better than -80dB
at 5MHz
Very low differential gain and phase errors
12Vpp bipolar signal capability
On-state resistance 75
V
Switch control through 2-stage latches
Orthogonal Xi and Yi pin connections for
optimized PCB layout
Latch readback capability for monitoring
High-end video routing and switching
Medical instrumentation
Automatic test equipment (ATE)
Multi-media communication
EE
GND
=-7V
MR
AX0-AX1
1st Stage Latches
2nd Stage Latches
"T" Switch Array
Address Decode
Y0-Y7
(max) for V
8x4
AY0-AY2
Figure 1 - Functional Block Diagram
DD
=+5V,
VDD
8 x 4 High Performance Video Switch Array
VEE
Control
Logic
I/O
VSS
Each of the 32 nodes of the switching matrix has a T-
switch, see Fig.1. This grounds the nodes of all open
connections, which greatly reduces feedthrough
noise. In order to reduce crosstalk, individual analog
signal lines are isolated by interleaving them with
ground lines.
The two stage programmable latch system allows
the state of all switching nodes to be updated
simultaneously. The next state of the switch is written
into the first stage of the latches through individual
write cycles. These changes will not affect the
current state of the switch. The STROBE2 control
input is used to load the state of all first stage latches
to the second stage latches, which updates the
complete matrix. Therefore, all 32 switching nodes
are updated simultaneously.
The MT88V32 supports separate analog (V
digital (V
to select an optimum analog signal bias point.
DD
R/W
DATA
X0
X1
X2
X3
CS
MT88V32AP
) voltage references. This allows the user
Ordering Information
-40° to 85° C
Preliminary Information
ISSUE 1
T-Switch Configuration
Yi
44 Pin PLCC
GND
MT88V32
Xi
August 1993
EE
) and
3-51

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MT88V32AP Summary of contents

Page 1

... VDD VEE VSS R/W I/O Control DATA Logic CS AY0-AY2 Figure 1 - Functional Block Diagram MT88V32 Preliminary Information ISSUE 1 August 1993 Ordering Information MT88V32AP 44 Pin PLCC -40° to 85° voltage references. This allows the user Yi Xi GND T-Switch Configuration ) and 3-51 ...

Page 2

MT88V32 * Connects toV EE Pin Description Pin #* Name GND Analog Ground. Connect to system ground for crosstalk noise isolation. Pins 3 and 39 8, 10, are not bonded internally. 12, 14, 16, 18, 20, ...

Page 3

Preliminary Information Functional Description The state of the MT88V32 switching matrix is updated through a simple parallel interface. This interface provides access to 32 two stage latches, which determines the state (open/ close) of each switching array ...

Page 4

MT88V32 AX1 AX0 AY2 ...

Page 5

Preliminary Information Wideband Input Buffers Figure 3 - High Frequency Switching Applications Figures 4, 5 and 6 show methods of interfacing the MT88V32 to Motorola and Intel microcontrollers. The address decoding for these configurations is in Table ...

Page 6

MT88V32 MC6800/ 6802/6809 VMA R/W Notes: for the MC6802 2 will be E. for the MC6809 2 will be E and VMA will be the OR’ed product of Q and E. Figure ...

Page 7

Preliminary Information 8031/8051 8085 (P0 (P0 (P2 ALE WR RD Figure 7 - Typical On-state Resistance (R AD0 5 74HCT574 ...

Page 8

MT88V32 Figure 8 - Single Channel Feedthrough (all crosspoints open) Figure 9 - Single Channel Crosstalk (one crosspoint closed) Figure 10 - All Channel Crosstalk (all crosspoints closed) 3-58 Preliminary Information ...

Page 9

Preliminary Information between this reference chrominance signal determines colour hue. 7) Differential Phase Error - (measured in degrees phase change in the chrominance signal due to a change in luminance amplitude. 8) Differential Gain Error - percentage) is ...

Page 10

MT88V32 Figure 12 - Typical Differential Phase vs. Ramp Voltage Figure 13 - Typical Differential Gain vs. Ramp Voltage 3-60 Preliminary Information ...

Page 11

Preliminary Information Absolute Maximum Ratings Parameter 1 Supply Voltage 2 Analog Input Voltage 3 Digital Input Voltage 4 Continuous Current (any analog I/O terminal) 5 Storage Temperature 6 Operating Temperature 7 Package Power Dissipation * Exceeding these values may cause ...

Page 12

MT88V32 DC Electrical Characteristics Voltages are with respect to V =5V, V =-7V Characteristics 1 Input logic "1" level 2 Input logic "0" level 3 Input leakage (digital pins) 4 Data output high voltage 5 Data output ...

Page 13

Preliminary Information AC Electrical Characteristics V =0V =50pF unlesss otherwise stated. Also applicable for Characteristics 1 DATA to STROBE1 setup 2 DATA to STROBE1 hold STROBE1 setup 4 CS ...

Page 14

MT88V32 css1 t STROBE1 t ass1 ADDRESS DATA t rwss1 R/W t s2s1 STROBE2 on SWITCH off STATUS t csov CS t rwov R/W t aov ADDRESS DATA High Z Note: STROBE1 is disabled when R/W is ...

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