DS90UB903QSQX/NOPB National Semiconductor, DS90UB903QSQX/NOPB Datasheet - Page 13

• Manufacturer Part Number: DS90UB903QSQX/NOPB
• Description: IC SER/DESER 10-43MHZ 18B 40LLP
• Manufacturer: National Semiconductor

Specifications of DS90UB903QSQX/NOPB

• Function: Serializer
• Data Rate: 900Mbps
• Input Type: LVCMOS
• Output Type: CML
• Number Of Inputs: 1
• Number Of Outputs: 1
• Voltage - Supply: 1.71 V ~ 1.89 V, 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 40-WFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

RECOMMENDED INPUT TIMING REQUIREMENTS
f
t
t
t
t
t
t
t
t
t
C
SWITCHING CHARACTERISTICS
f
t
t
t
t
t
t
t
t
t
t
SCL
LOW
HIGH
HD:STA
SU:STA
HD:DAT
SU:DAT
SU:STO
r
f
SCL
LOW
HIGH
HD:STA
SU:STA
HD:DAT
SU:DAT
SU:STO
f
BUF
TIMEOUT
Symbol
b
Bidirectional Control Bus AC Timing Specifications (SCL, SDA) - I
Compliant (Figure 4)
Over recommended supply and temperature ranges unless otherwise specified.
SCL Clock Frequency
SCL Low Period
SCL High Period
Hold time for a start or a repeated start
condition
Set Up time for a start or a repeated
start condition
Data Hold Time
Data Set Up Time
Set Up Time for STOP Condition
SCL & SDA Rise Time
SCL & SDA Fall Time
Capacitive load for bus
SCL Clock Frequency
SCL Low Period
SCL High Period
Hold time for a start or a repeated start
condition
Set Up time for a start or a repeated
start condition
Data Hold Time
Data Set Up Time
Set Up Time for STOP Condition
SCL & SDA Fall Time
Bus free time between a stop and start
condition
NACK Time out
Parameter
(Note
11)
f
Serializer MODE = 0 – R/W
Register 0x05 = 0x40'h
Deserializer MODE = 0 – READ
Register 0x06 b[6:4] = 0x00'h
Serializer MODE = 0 – R/W
Register 0x05 = 0x40'h
Deserializer MODE = 0 – READ
Register 0x06 b[6:4] = 0x00'h
Serializer MODE = 0 – R/W
Register 0x05 = 0x40'h
Deserializer MODE = 0 – READ
Register 0x06 b[6:4] = 0x00'h
Serializer MODE = 0
Register 0x05 = 0x40'h
Serializer MODE = 0
Register 0x05 = 0x40'h
Serializer MODE = 0
Serializer MODE = 0
Serializer MODE = 1
Deserializer MODE = 1
Register 0x06 b[2:0]=111'b
SCL
(Note
= 100 kHz
12)
Conditions
13
Min
250
250
4.7
4.0
4.0
4.7
4.0
4.7
4.0
4.0
4.7
4.0
4.7
>0
0
0
Typ
100
100
25
1
2
C
1000
Max
3.45
3.45
100
300
400
300
www.national.com
Units
kHz
kHz
ms
pF
µs
µs
µs
µs
µs
ns
µs
ns
ns
µs
µs
µs
µs
µs
ns
µs
ns
µs