GTL2009PW,112 NXP Semiconductors, GTL2009PW,112 Datasheet - Page 6

• Manufacturer Part Number: GTL2009PW,112
• Description: IC 3-BIT FREQ COMPARATOR 16TSSOP
• Manufacturer: NXP Semiconductors

Specifications of GTL2009PW,112

• Package / Case: 16-TSSOP
• Applications: Compares FSB Frequency Inputs
• Interface: GTL, TTL
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Product: Digital Comparators
• Output Type: Complementary
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Maximum Operating Temperature: 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-3064-5; 935278365112; GTL2009PW

Philips Semiconductors
8. Application design-in information
9397 750 13556
Product data sheet
8.1 Frequently asked questions
Question 1: When the GTL2009 is unpowered, the LVTTL inputs may be pulled up to
3.3 V and we want to make sure that there is no leakage path to the power rail under this
condition. Are the LVTTL inputs high-impedance when the device is unpowered and will
there be any leakage?
Answer 1: When the device is unpowered, the LVTTL inputs will be in a high-impedance
state and will not leak to V
unpowered.
Question 2: What is the condition of the GTL and LVTTL output pins when the device is
unpowered?
Answer 2: The open-drain GTL outputs will not leak to the power supply if they are pulled
HIGH or allowed to float while the device is unpowered. The GTL inputs will also not leak
to the power supply under the same conditions. The LVTTL totem pole outputs, however,
are not open-drain type outputs and there will be current flow on these pins if they are
pulled HIGH when V
Fig 3. Application diagram
front-side bus
common
V
TT
DD
Rev. 01 — 22 September 2005
is at ground.
DD
if they are pulled HIGH or LOW while the device is
R
2R
V
VREF
BO3
BO2
BO1
AO2
AO1
V
DD
SS
3-bit GTL Front-Side Bus frequency comparator
1BI1
1BI2
1BI3
2BI1
2BI2
2BI3
1AI
2AI
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
56
slot A occupied
slot B occupied
PROCESSOR
PROCESSOR
GTL2009
A
B
002aaa998
V
6 of 17
TT