LVCMOS/ LVTTL Fanout Buffer/
Divider
ICS87004I-03
DATA SHEET
ICS87004BGI-03 REVISION A FEBRUARY 22, 2012 1 ©2012 Integrated Device Technology, Inc.
General Description
The ICS87004I-03 is a low skew, ÷1, ÷2 ÷3, ÷4 ÷5, ÷6 ÷8, ÷16
LVCMOS/LVTTL Fanout Buffer/Divider. The ICS87004I-03 has
selectable clock inputs that accept single ended input levels. Output
enable pin controls whether the output is in the active or high
impedance state.
The ICS87004I-03 is characterized at 3.3V, 2.5V and mixed
3.3V,2.5V, 3.3V,1.8V, 2.5V,1.8V input/output supply operating
modes.Guaranteed bank, output, and part-to-part skew
characteristics make the ICS87004I-03 ideal for those applications
demanding well defined performance and repeatability.
Features
Two banks of two LVCMOS/LVTTL outputs
Selectable LVCMOS/LVTTL clock inputs
LVCMOS_CLK supports the following input types: LVCMOS,
LVTTL
Maximum output frequency: 250MHz
Output skew: 40ps (typical)
Bank skew: 20ps (typical)
Part-to-part skew: 60ps (typical)
Power supply modes:
CORE / OUTPUT
3.3V / 3.3V
3.3V / 2.5V
3.3V / 1.8V
2.5V / 2.5V
2.5V / 1.8V
-40°C to 85°C ambient operating temperature
Available in lead-free (RoHS 6) package
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
NB1
NB2
CLK1
C
LK_SEL
CLK0
NA0
NA1
NA2
V
DD
NB0
OEA
V
DDO
A
QA0
QA1
GND
QB1
QB0
V
DDO
B
GND
OEB
Block Diagram
Pin Assignment
N Output Divider
NA2:NA0
0 0 0 ÷1 (default)
0 0 1 ÷2
0 1 0 ÷3
0 1 1 ÷4
1 0 0 ÷5
1 0 1 ÷6
1 1 0 ÷8
1 1 1 ÷16
N Output Divider
NB2:NB0
0 0 0 ÷1 (default)
0 0 1 ÷2
0 1 0 ÷3
0 1 1 ÷4
1 0 0 ÷5
1 0 1 ÷6
1 1 0 ÷8
1 1 1 ÷16
0
1
3
QA0
QA1
QB0
QB1
OEB
NB2:NB0
CLK1
CLK0
CLK_SEL
Pulldown
Pulldown
Pulldown
Pulldown
Pullup
3
OEA
NA2:NA0
Pulldown
Pullup
V
DD0A
V
DD0B
ICS87004I-03
20-Lead TSSOP
6.50mm x 4.40mm x 0.925mm package body
G Package
Top View
ICS87004I-03 Data Sheet LVCMOS/LVTTL FANOUT BUFFER/DIVIDER
ICS87004BGI-03 REVISION A FEBRUARY 22, 2012 2 ©2012 Integrated Device Technology, Inc.
Table 1. Pin Descriptions
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.
Table 2. Pin Characteristics
Number Name Type Description
1V
DD
Power Power supply pin.
2, 3, 4 NA2, NA1, NA0 Input Pulldown N divider select pins for Bank A outputs. LVCMOS / LVTTL interface levels.
5, 7 CLK0, CLK1 Input Pulldown Single-ended clock inputs. LVCMOS / LVTTL interface levels.
6 CLK_SEL Input Pulldown Input clock selection. LVCMOS / LVTTL interface levels. See Table 6.
8, 9, 10 NB2, NB1, NB0 Input Pulldown N divider select pins for Bank B outputs. LVCMOS / LVTTL interface levels.
11 OEB Input Pullup
Output enable control input for Bank B outputs. LVCMOS / LVTTL interface
levels. See Table 5.
12, 16 GND Power Power supply core ground.
13 V
DDOB
Power Bank B output supply pin.
14, 15 QB0, QB1 Output Single-ended Bank B clock outputs. LVCMOS / LVTTL interface levels.
17, 18 QA1, QA0 Output Single-ended Bank A clock outputs. LVCMOS / LVTTL interface levels.
19 V
DDOA
Power Bank A output supply pin.
20 OEA Input Pullup
Output enable control input for Bank A outputs. LVCMOS / LVTTL interface
levels. See Table 4.
Symbol Parameter Test Conditions Minimum Typical Maximum Units
C
IN
Input Capacitance 4pF
R
PULLDOWN
Input Pulldown Resistor 51 k
R
PULLUP
Input Pullup Resistor 51 k
C
PD
Power Dissipation Capacitance
(per output)
V
DDOA
= V
DDOB
= 3.465V 10 pF
V
DDOA
= V
DDOB
= 2.625V 10 pF
V
DDOA
= V
DDOB
= 1.95V 10 pF
R
OUT
Output Impedance
V
DDOA
= V
DDOB
= 3.3V ± 5% 17
V
DDOA
= V
DDOB
= 2.5V ± 5% 20
V
DDOA
= V
DDOB
= 1.8V ± 0.15V 28
ICS87004I-03 Data Sheet LVCMOS/LVTTL FANOUT BUFFER/DIVIDER
ICS87004BGI-03 REVISION A FEBRUARY 22, 2012 3 ©2012 Integrated Device Technology, Inc.
Function Table
Table 3. Programmable Output Divider Function Table
NOTE: Bank A and Bank B outputs are only synchronous if the same divider value is selected (NA2:0=NB2:0).
Table 4. OEA Function Table
Table 5. OEB Function Table
Table 6. Input Clock Selection
Inputs
N Divider Value
MAX Output Frequency
(MHz)NX2 NX1 NX0
0 0 0 ÷1 (default) 250
001 ÷2 125
010 ÷3 83.333
011 ÷4 62.5
100 ÷5 50
101 ÷6 41.667
1 1 0 ÷8 31.25
111 ÷16 15.625
OEA Function
0 Bank A outputs are disabled in high-impedance state.
1 (default) Bank A outputs are enabled
OEB Function
0 Bank B outputs are disabled in high-impedance state.
1 (default) Bank B outputs are enabled
CLK_SEL Input Clock
0 (default) CLK0
1CLK1

87004BGI-03LF

Mfr. #:
Manufacturer:
IDT
Description:
Clock Buffer 4 OUT BUFFER/DIVIDER
Lifecycle:
New from this manufacturer.
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