1©2016 Integrated Device Technology, Inc Revision A January 27, 2016
General Description
The 874328I-01 is a high-performance differential ÷1 and ÷4 clock
divider and fanout buffer. The device is designed for the
frequency-division and signal fanout of high-frequency, low
phase-noise clock signals. The differential input signal is frequency
divided by ÷1 and ÷4. Three LVPECL and three LVDS output banks
are provided with a total of twenty differential outputs. The
874328I-01 is characterized to operate from a 2.5V power supply.
Guaranteed output-to-output and part-to-part skew characteristics
make the 874328I-01 ideal for those clock distribution applications
demanding well-defined performance and repeatability.
Features
One differential input LVPECL reference clock
Differential pair can accept the following differential input
levels: LVPECL, LVDS, CML, SSTL
Integrated input termination resistors
One bank of three LVPECL outputs (÷1 frequency-divided)
One bank of three LVPECL outputs (÷4 frequency-divided)
One bank of two LVPECL outputs (÷4 frequency-divided)
Two banks of three LVDS outputs (÷4 frequency-divided)
One bank of six LVDS outputs (÷4 frequency-divided)
Total of twenty differential clock outputs
Maximum input frequency: 650MHz
Maximum output frequency: 650MHz (÷1 outputs)
Maximum output frequency: 162.5MHz (÷4 outputs)
LVCMOS interface levels for all control inputs
Output skew: 70ps (maximum)
Part-to-part skew: 250ps (maximum)
Full 2.5V supply voltage
Available in lead-free (RoHS 6) package
-40°C to 85°C ambient operating temperature
Block Diagram
50 50
f
REF
÷1
÷4
CLK
nCLK
V
T
V
REF
CLK_EN
Pullup
Pullup
Pullup
Pullup
Pullup
Pullup
Pullup
QA[0:2]
nQA[0:2]
(LVPECL)
QB[0:2]
nQB[0:2]
(LVPECL)
QC[0:1]
nQC[0:1]
(LVPECL)
QD[0:2]
nQD[0:2]
(LVDS)
VEE
VCCOA
QA0
QA1
nQA1
QA2
nQA2
nQA0
CLK_EN
nQB0
QB0
QB1
nQB1
QB2
nQB2
V
CCOB
nQC1
QC1
nQC0
V
CCOC
QC0
OEF
OEE
OED
OEA
V
CC
OEC
nCLK
V
REF
VT
CLK
OEB
VEE
VCCODE
QD2
V
CCODE
QE0
nQE0
QE1
nQE1
QE2
nQE2
QD0
V
EE
nQD0
QD1
nQD1
nQD2
V
CCOF
nQF5
QF5
nQF4
QF4
nQF3
QF3
nQF2
V
EE
QF2
nQF1
QF1
nQF0
V
CCOF
QF0
V
EE
64 63 62 61 60 59 58 57 56 55
54 53 52 51 50 49
17 18 19 20 21
22
23 24 25 26 27 28 29 30 31 32
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
Pin Assignment
ICS874328I-01
64-Lead TQFP, E-Pad
10mm x 10mm x 1.0mm
package body
Y package
To p V i ew
874328I-01
Data Sheet
2.5V Differential Clock Divider/Buffer
2©2016 Integrated Device Technology, Inc Revision A January 27, 2016
874328I-01 Data Sheet
Table 1. Pin Descriptions
Number Name Type Description
1, 17, 32, 49, 64 V
EE
Power
Negative supply pins.
2V
CCOA
Power
Output power supply for Bank A outputs.
3, 4 QA0, nQA0 Output
Differential Bank A output pair. LVPECL interface levels.
5, 6 QA1, nQA1 Output
Differential Bank A output pair. LVPECL interface levels.
7, 8 QA2, nQA2 Output
Differential Bank A output pair. LVPECL interface levels.
9, 10 QB0, nQB0 Output
Differential Bank B output pair. LVPECL interface levels.
11, 12 QB1, nQB1 Output
Differential Bank B output pair. LVPECL interface levels.
13, 14 QB2, nQB2 Output
Differential Bank B output pair. LVPECL interface levels.
15 V
CCOB
Power
Output power supply for Bank B outputs.
16 CLK_EN Input Pullup Clock enable. See Table 3G for function. LVCMOS/LVTTL interface levels.
18, 31 V
CCODE
Power
Output power supply for Bank D and E outputs.
19, 20 QE0, nQE0 Output
Differential Bank E output pair. LVDS interface levels.
21, 22 QE1, nQE1 Output
Differential Bank E output pair. LVDS interface levels
23, 24 QE2, nQE2 Output
Differential Bank E output pair. LVDS interface levels
25, 26 QD0, nQD0 Output
Differential Bank D output pair. LVDS interface levels.
27, 28 QD1, nQD1 Output
Differential Bank D output pair. LVDS interface levels.
29, 30 QD2, nQD2 Output
Differential Bank D output pair. LVDS interface levels.
33 OEA Input Pullup
Output enable for Bank A outputs. See Table 3A for function.
LVCMOS/LVTTL interface levels.
34 OEB Input Pullup
Output enable for Bank B outputs. See Table 3B for function.
LVCMOS/LVTTL interface levels.
35 CLK Input
Non-inverting differential LVPECL clock input.
36 V
T
Termination
input
Input for termination. Both CLK and nCLK inputs are terminated to this pin.
See input termination information in the applications section.
37 V
REF
Output
Reference voltage output. Provides a bias voltage of V
CC
- 1.10V. Connect
the V
REF
output to V
T
if the differential input pair CLK, nCLK is AC-coupled.
Leave V
REF
open if the differential input pair CLK, nCLK is DC-coupled. See
input termination information in the applications section.
38 nCLK Input
Inverting differential LVPECL clock input.
39 OEC Input Pullup
Output enable for Bank C outputs. See Table 3C for function.
LVCMOS/LVTTL interface levels.
40 V
CC
Power
Power supply pin.
41 OED Input Pullup
Output enable for Bank D outputs. See Table 3D for function.
LVCMOS/LVTTL interface levels.
42 OEE Input Pullup
Output enable for Bank E outputs. See Table 3E for function.
LVCMOS/LVTTL interface levels.
43, 44 QC0, nQC0 Output
Differential Bank C output pairs. LVPECL interface levels.
Continued on next page.
3©2016 Integrated Device Technology, Inc Revision A January 27, 2016
874328I-01 Data Sheet
NOTE: Pullup refers to internal input resistors. See Table 2, Pin Characteristics, for typical values.
Table 2. Pin Characteristics
Function Tables
Table 3A. OEA Configuration Table
NOTE: OEA is an asynchronous control.
Table 3B. OEB Configuration Table
NOTE: OEB is an asynchronous control.
Table 3C. OEC Configuration Table
NOTE: OEC is an asynchronous control.
Table 3D. OED Configuration Table
NOTE: OED is an asynchronous control.
45, 46 QC1, nQC1 Output
Differential Bank C output pair. LVPECL interface levels.
47 V
CCOC
Power
Output power supply for Bank C outputs.
48 OEF Input Pullup
Output enable for Bank F outputs. See Table 3F for function.
LVCMOS/LVTTL interface levels.
50, 63 V
CCOF
Power
Output power supply for Bank F outputs.
51, 52 QF0, nQF0 Output
Differential Bank F output pair. LVDS interface levels.
53, 54 QF1, nQF1 Output
Differential Bank F output pair. LVDS interface levels.
55, 56 QF2, nQF2 Output
Differential Bank F output pair. LVDS interface levels.
57, 58 QF3, nQF3 Output
Differential Bank F output pair. LVDS interface levels.
59, 60 QF4, nQF4 Output
Differential Bank F output pair. LVDS interface levels.
61, 62 QF5, nQF5 Output
Differential Bank F output pair. LVDS interface levels.
Number Name Type Description
Symbol Parameter Test Conditions Minimum Typical Maximum Units
C
IN
Input Capacitance 4pF
R
PULLUP
Input Pullup Resistor 51 k
Input
OperationOEA
0 Outputs QAx/nQAx are in a high-impedance state.
1 Outputs are enabled. (Default)
Input
OperationOEB
0 Outputs QBx/nQBx are in a high-impedance state.
1 Outputs are enabled. (Default)
Input
OperationOEC
0 Outputs QCx/nQCx are in a high-impedance state.
1 Outputs are enabled. (Default)
Input
OperationOED
0 Outputs QDx/nQDx are in a high-impedance state.
1 Outputs are enabled. (Default)

874328BYI-01LF

Mfr. #:
Manufacturer:
IDT
Description:
Clock Drivers & Distribution 2.5V Differential Clock Divider/Buffer
Lifecycle:
New from this manufacturer.
Delivery:
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