ICS9DB423BGLFT IDT, Integrated Device Technology Inc, ICS9DB423BGLFT Datasheet - Page 15

• Manufacturer Part Number: ICS9DB423BGLFT
• Description: IC PC CLOCK 3.3V 28-TSSOP
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Bufferr

Specifications of ICS9DB423BGLFT

• Input: Clock
• Output: Clock
• Frequency - Max: 400MHz
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 28-TSSOP
• Frequency-max: 400MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 9DB423BGLFT

DIF_STOP#
The DIF_STOP# signal is an active-low asynchronous input that cleanly stops and starts the DIF outputs. A valid clock must
be present on SRC_IN for this input to work properly. The DIF_STOP# signal is de-bounced and must remain stable for two
consecutive rising edges of DIF# to be recognized as a valid assertion or de-assertion.
DIF_STOP# - Assertion
Asserting DIF_STOP# causes all DIF outputs to stop after their next transition (if the control register settings allow the output
to stop). When the DIF_STOP# drive bit is ‘0’, the final state of all stopped DIF outputs is DIF = High and DIF# = Low. There
is no change in output drive current. DIF is driven with 6xI
DIF_STOP# drive bit is ‘1’, the final state of all DIF output pins is Low. Both DIF and DIF# are not driven.
DIF_STOP# - De-assertion (transition from '0' to '1')
All stopped differential outputs resume normal operation in a glitch-free manner. The de-assertion latency to active outputs is
2-6 DIF clock periods, with all DIF outputs resuming simultaneously. If the DIF_STOP# drive control bit is ‘1’ (tri-state), all
stopped DIF outputs must be driven High (>200 mV) within 10 ns of de-assertion.
IDT
DIF_STOP_1 (Stop_Mode = Driven, PD_Mode = Driven)
DIF_STOP_2 (Stop_Mode = Tristate, PD_Mode = Driven)
9DB423B
Four Output Differential Buffer for PCIe for Gen 1, Gen 2 and QPI
®
Four Output Differential Buffer for PCIe Gen 1, Gen 2 and QPI
DIF# (Free Running)
DIF (Free Running)
DIF# (Free Running)
DIF# (Stoppable)
DIF (Free Running)
DIF (Stoppable)
DIF# (Stoppable)
DIF (Stoppable)
DIF_Stop#
PWRDWN#
DIF_Stop#
PWRDWN#
REF.
DIF# is not driven, but pulled low by the termination. When the
15
1mS
1mS
1437 Rev C - 01/27/11