T
R
I
Q
U
I
N
T
S E M I C O N D U C T O R , I N C .
TQ8017
16 x 16
Crosspoint
Switch
1.25 Gigabit/sec
Input
Buffers
D0..15
D0..15
O0..15
O0..15
Output
Buffers
16x16 Digital PECL
Crosspoint Switch
Matrix
64
CONFIGURE
RESET
(R2)
Sixteen 4-Bit Latches
64
(R1)
LOAD
IA0..3
Sixteen 4-Bit Addressable
Output Select Latches
VCC
VEE
4
4
4:16
Decoder
OA0..3
GND
TQ8017
Typical output waveform with
all channels driven
The TQ8017 is a non-blocking 16 x 16 digital crosspoint switch capable of
data rates greater than 1.25 Gigabits per second per port. Utilizing a fully
differential internal data path and PECL I/O, the TQ8017 offers a high data
rate with exceptional signal fidelity. The symmetrical switching and noise
rejection characteristics inherent in differential logic result in low jitter and
signal skew. The TQ8017 is ideally suited for digital video, data
Features
• >20 Gb/s aggregate BW
• 1.25 Gb/s/port NRZ data rate
• Non-blocking architecture
• 500 ps delay match
communications and telecommunication switching applications.
• Differential PECL-level data
I/O; Selectable CMOS/TTL-
level control inputs
The non-blocking architecture uses 16 fully independent 16:1 multiplexers
(see diagram on page 2), allowing each output port to be independently
programmed to any input port. The switch is configured by sequentially
loading each multiplexer’s 4-bit program latch (OA0:3) with the desired
input port address (IA0:3) and enabling the LOAD pin. When complete, the
CONFIGURE pin is strobed and all new configurations are simultaneously
transferred into the switch multiplexers. Data integrity is maintained on all
unchanged data paths.
• Low jitter and signal skew
• Fully differential data path
• Double-buffered
configuration latches
• 132-pin MQFP package
• Single +5V supply
Electrical Characteristics
Applications
Min
Max
Units
• Telecom/Datacom Switching
• Hubs and Routers
Data Rate/port
1.25
Gb/s
ps pk-pk
ps
Jitter
150
2000
500
Channel Propagation Delay
Ch-to-Ch Propagation Delay Skew
• Video Switching
ps
1
For additional information and latest specifications, see our website: www.triquint.com