CY29940 Cypress Semiconductor, CY29940 Datasheet
CY29940
Available stocks
Related parts for CY29940
CY29940 Summary of contents
Page 1
... Document #: 38-07283 Rev. *B 2.5V or 3.3V, 200-MHz, 1:18 Clock Distribution Buffer Description The CY29940 is a low-voltage 200-MHz clock distribution buff- er with the capability to select either a differential LVPECL or a LVCMOS/LVTTL compatible input clock. The two clock sources can be used to provide for a test clock as well as the primary system clock ...
Page 2
... PECL Input Clock I, PD PECL Input Clock I, PD External Reference/Test Clock Input VDDC O Clock Outputs I, PD Clock Select Input. When LOW, PECL clock is selected and when HIGH TCLK is selected. 3.3V or 2.5V Power Supply for Output Clock Buffers 3.3V or 2.5V Power Supply Common Ground CY29940 Description Page ...
Page 3
... A Min. Typ. Max 2.0 V –200 500 1000 V – 1 – 1 3.3V 2.4 DDC = 2.5V 1.8 DDC 5 285 335 200 240 ( VDD/2) transmission lines CY29940 Unit. 0 µA 200 µA mV – 0.6 V – 0 Page ...
Page 4
... Min. Typ. Max. 200 t 2.0 3.2 PHL t 2.1 3.4 PLH t 1.9 3.1 PHL t 2.0 3.2 PLH t 2.5 5.2 PHL t 2.6 5 PLH t 2.5 5 PHL t 2.6 5 PLH t 1.9 3 PHL t 2.0 3.2 PLH t 1.8 2.9 PHL t 1.8 3.1 PLH t 2.5 4 PHL t 2.5 4 PLH t 2.3 3.8 PHL t 2.3 3.8 PLH 150 200 1.4 2.2 1.2 1.7 850 750 0.3 1.1 0.3 1.2 CY29940 Units MHz Page ...
Page 5
... Pulse Generator ohm Figure 1. LVCMOS_CLK CY29940 Test Reference for V Differential Pulse Generator ohm Figure 2. PECL_CLK CY29940 Test Reference for V PECL_CLK V PECL_CLK Figure 3. Propagation Delay (TPD) Test Reference LVCMOS_CLK Figure 4. LVCMOS Propagation Delay (TPD) Test Reference Document #: 38-07283 Rev. *B ...
Page 6
... Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. Package Type Industrial, –40°C to +85°C Industrial, –40°C to +85°C CY29940 Production Flow Commercial, 0°C to 70°C Commercial, 0°C to 70°C ...
Page 7
... Document Title: CY29940 2.5V or 3.3V, 200-MHz, 1:18 Clock Distribution Buffer Document Number: 38-07283 Issue REV. ECN NO. Date ** 111094 02/01/02 *A 116776 08/15/02 *B 122875 12/21/02 Document #: 38-07283 Rev. *B Orig. of Change BRK New data sheet HWT Incorporate results of final characterization using corporate methods, added output impedance on page 3 and added output duty cycle on page 4. ...