ICS8305AGT IDT, Integrated Device Technology Inc, ICS8305AGT Datasheet
ICS8305AGT
Specifications of ICS8305AGT
Related parts for ICS8305AGT
ICS8305AGT Summary of contents
Page 1
LOW SKEW, 1-TO-4 MULTIPLEXED DIFFERENTIAL/ LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER General Description The ICS8305 is a low skew, 1-to-4, Differential/ ICS LVCMOS-to-LVCMOS/LVTTL Fanout Buffer and a member of the HiPerClockS™ family of High HiPerClockS™ Performance Clock Solutions from IDT. The ICS8305 has ...
Page 2
ICS8305 LOW SKEW, 1-TO-4 MULTIPLEXED DIFFERENTIAL/LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER Table 1. Pin Descriptions Number Name GND CLK_EN 5 CLK 6 nCLK 7 CLK_SEL 8 LVCMOS_CLK 10, 12, 14, 16 Q3, Q2, Q1, ...
Page 3
ICS8305 LOW SKEW, 1-TO-4 MULTIPLEXED DIFFERENTIAL/LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER Function Tables Table 3. Control Input Function Table OE CLK_EN After CLK_EN switches, the clock outputs are disabled or enabled following a ...
Page 4
ICS8305 LOW SKEW, 1-TO-4 MULTIPLEXED DIFFERENTIAL/LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER Absolute Maximum Ratings NOTE: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are stress specifications only. Functional operation of product at these conditions ...
Page 5
ICS8305 LOW SKEW, 1-TO-4 MULTIPLEXED DIFFERENTIAL/LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER Table 4B. LVCMOS/LVTTL DC Characteristics, T Symbol Parameter CLK_EN, CLK_SEL, OE Input High V IH Voltage LVCMOS_CLK CLK_EN, CLK_SEL, OE Input Low V IL Voltage LVCMOS_CLK CLK_EN, CLK_SEL, OE Input I IH ...
Page 6
ICS8305 LOW SKEW, 1-TO-4 MULTIPLEXED DIFFERENTIAL/LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER AC Electrical Characteristics Table 5A. AC Characteristics, V Parameter Symbol f Output Frequency MAX LVCMOS_CLK; Propagation NOTE 1A tp Delay, LH CLK/nCLK; Low to High NOTE 1B tsk(o) Output Skew; NOTE 2, ...
Page 7
ICS8305 LOW SKEW, 1-TO-4 MULTIPLEXED DIFFERENTIAL/LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER Table 5C. AC Characteristics, V Parameter Symbol f Output Frequency MAX LVCMOS_CLK; Propagation NOTE 1A tp Delay, LH CLK/nCLK; Low to High NOTE 1B tsk(o) Output Skew; NOTE 2, 6 tsk(pp) Part-to-Part ...
Page 8
ICS8305 LOW SKEW, 1-TO-4 MULTIPLEXED DIFFERENTIAL/LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER Additive Phase Jitter The spectral purity in a band at a specific offset from the fundamental compared to the power of the fundamental is called the dBc Phase Noise. This value is ...
Page 9
ICS8305 LOW SKEW, 1-TO-4 MULTIPLEXED DIFFERENTIAL/LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER Parameter Measurement Information 1.65V±5% V DD, V DDO LVCMOS C 25pF* L *For t /t measurement only -1.65V± 3.3V Core/3.3V LVCMOS Output Load AC Test Circuit 2.4V±0.09V 0.9V±0.075V V DD ...
Page 10
ICS8305 LOW SKEW, 1-TO-4 MULTIPLEXED DIFFERENTIAL/LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER Parameter Measurement Information, continued Part 1 V DDO Qx 2 Part 2 V DDO Qy 2 tsk(pp) Part-to-Part Skew 80% 20% Clock t Outputs R Output Rise/Fall Time IDT™ / ICS™ LVCMOS/LVTTL ...
Page 11
ICS8305 LOW SKEW, 1-TO-4 MULTIPLEXED DIFFERENTIAL/LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER Application Information Recommendations for Unused Input and Output Pins Inputs: LVCMOS_CLK Input For applications not requiring the use of a clock input, it can be left floating. Though not required, but for ...
Page 12
ICS8305 LOW SKEW, 1-TO-4 MULTIPLEXED DIFFERENTIAL/LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER Differential Clock Input Interface The CLK /nCLK accepts LVDS, LVPECL, LVHSTL, SSTL, HCSL and other differential signals. Both signals must meet the V V input requirements. Figures show interface ...
Page 13
ICS8305 LOW SKEW, 1-TO-4 MULTIPLEXED DIFFERENTIAL/LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER Schematic Example This application note provides general design guide using ICS8305 LVCMOS buffer. Figure 4 shows a schematic example of the ICS8305 LVCMOS clock buffer. In this example, the input is VDD ...
Page 14
ICS8305 LOW SKEW, 1-TO-4 MULTIPLEXED DIFFERENTIAL/LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER Reliability Information θ Table 6. vs. Air Flow Table for a 16 Lead TSSOP JA Linear Feet per Minute Single-Layer PCB, JEDEC Standard Test Boards Multi-Layer PCB, JEDEC Standard Test Boards NOTE: ...
Page 15
ICS8305 LOW SKEW, 1-TO-4 MULTIPLEXED DIFFERENTIAL/LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER Ordering Information Table 8. Ordering Information Part/Order Number Marking 8305AG 8305AG 8305AGT 8305AG 8305AGLF 8305AGLF 8305AGLFT 8305AGLF NOTE: Parts that are ordered with an "LF" suffix to the part number are the ...
Page 16
... C IDT™ / ICS™ LVCMOS/LVTTL FANOUT BUFFER Description of Change Ordering Information table - corrected Part/Order Number typo from ICS88305AGT to ICS8305AGT. Added Additive Phase Jitter to AC Characteristics Tables. Added Additive Phase Jitter Section. Pin Description Table - corrected CLK_EN description. Features Section - added 1.5V output to Supply Mode bullet and added Lead-Free buttlet ...
Page 17
ICS8305 LOW SKEW, 1-TO-4 MULTIPLEXED DIFFERENTIAL/LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales 800-345-7015 408-284-8200 Fax: 408-284-2775 Corporate Headquarters Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United ...