CY2DP818-2_08 CYPRESS [Cypress Semiconductor], CY2DP818-2_08 Datasheet

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CY2DP818-2_08

Manufacturer Part Number
CY2DP818-2_08
Description
1:8 Clock Fanout Buffer
Manufacturer
CYPRESS [Cypress Semiconductor]
Datasheet
Cypress Semiconductor Corporation
Document #: 38-07588 Rev. *A
Features
Logic Block Diagram
Low voltage operation V
1:8 fanout
Single-input configurable for LVDS, LVPECL, or LVTTL
8 pairs of LVPECL outputs with enable and disable
Drives a 50 ohm load
Low input capacitance
Low output skew
Low propagation delay typical (tpd < 4 ns)
Industrial versions available
Package available include: TSSOP
Does not exceed Bellcore 802.3 standards
Operation up to 350 MHz and 700 Mbps
DD
= 3.3V
INPUT A
INPUT B
InConfig
(LVPECL / LVDS / LVTTL)
PRELIMINARY
198 Champion Court
INPUT
EN7
EN4
EN5
EN6
EN1
EN2
EN3
Description
This Cypress series of network circuits is produced using
advanced 0.35 micron CMOS technology, achieving the
industry’s fastest logic.
The Cypress CY2DP818-2 fanout buffer features a single
LVDS or a single-ended LVTTL compatible input and eight
LVPECL output pairs.
Designed for data communications clock management appli-
cations, the large fanout from a single input reduces loading
on the input clock.
The CY2DP818-2 is ideal for both level translations from
single-ended to LVPECL and for the distribution of LVPECL
based clock signals.
The Cypress CY2DP818-2 has configurable input functions.
The input is user configurable through the Inconfig pin for
single ended or differential input.
OUTPUT
San Jose
(LVPECL)
1:8 Clock Fanout Buffer
Q5A
Q3A
Q3B
Q4A
Q4B
Q5B
Q6A
Q6B
Q7A
Q7B
Q8A
Q8B
Q1A
Q1B
Q2A
Q2B
,
CA 95134-1709
Revised October 22, 2008
CY2DP818-2
408-943-2600
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CY2DP818-2_08 Summary of contents

Page 1

... Designed for data communications clock management appli- cations, the large fanout from a single input reduces loading on the input clock. The CY2DP818-2 is ideal for both level translations from single-ended to LVPECL and for the distribution of LVPECL based clock signals. The Cypress CY2DP818-2 has configurable input functions. ...

Page 2

... See InConfig, below. single pin LVPECL Differential outputs. LVTTL/LVCMOS Converts inputs from the default LVPECL/LVDS (logic = 0) to LVTTL/LVCMOS (logic = 1) See Input Receiver Configuration for Differential or LVTTL/LVCMOS additional information CY2DP818-2 Description table, Figure 6 and Figure 7 for Page [+] Feedback [+] Feedback [+] Feedback ...

Page 3

... Single ended, non inverting, inverting, void of bias resistors Low voltage differential signaling Low voltage pseudo (positive) emitter coupled logic LVTTL/LVCMOS Input Logic Input Logic Output Logic Q Pins, Q1A or Q1 Input Input Input Input CY2DP818-2 Min Typ Max Unit 1.5 2.0 mA/ MHz 350 mA 50 ...

Page 4

... A Conditions Guaranteed Logic High Level Guaranteed Logic Low Level V = Max Max Max (Max Min – CY2DP818-2 Min Max –0.3 4.6 –0 0.3 DD applied –0 0 –0 0.9 DD ÷ 2 – – ...

Page 5

... Min User-defined by VTT RTT Max GND DD OUT Description Conditions 45% to 55% duty cycle Standard load circuit Figure 2. Driver Design CY2DP818-2 Min Typ Max ohm 1000 – 3600 ohm – – 300 ohm 300 1200 I = –12 mA 2.1 – ...

Page 6

... Differential T PLH T PHL 0V Differential QXA - QXB 150 B GND 150 Standard Termination V 2.0V I(A) V I(B) 1.6V ≤ 1 ns; pulse rerate = 50 Mpps; pulse width = 10 ± 0.2 ns. and CY2DP818-2 [2,3,4,5] TPA 50 TPC VDD-2V 50 TPB 1.4 V 1.0 V 1.4 V 1.0 V 80% 20% [2,3,4,5] TPA 50 TPC 50 TPB VOC VOD Next Device – Page ...

Page 7

... INPUT A LVCM OS / LVTTL INPUT B GND InConfig LVTTL/LVCMOS 1 Ordering Information Part Number CY2DP818ZI-2 CY2DP818ZI-2T CY2DP818ZC-2 CY2DP818ZC-2T Pb Free Devices CY2DP818ZXI-2 CY2DP818ZXI-2T CY2DP818ZXC-2 CY2DP818ZXC-2T Note 6. LVPECL or LVDS differential input value. Document #: 38-07588 Rev. *A PRELIMINARY 150 10pF GND 150 Standard Termination 1.4V 1.0V 0.0V tF Figure 7. LVDS/LVPECL & ...

Page 8

... Package Drawing and Dimensions Document #: 38-07588 Rev. *A PRELIMINARY Figure 8. 38-Pin TSSOP (4.40 mm Body) Z38 CY2DP818-2 51-85151-*A Page [+] Feedback [+] Feedback [+] Feedback ...

Page 9

... Document History Page Document Title: CY2DP818-2 1:8 Clock Fanout Buffer Document Number: 38-07588 Submission Rev. ECN No. Date ** 129879 11/07/03 *A 2595534 10/23/08 Sales, Solutions, and Legal Information Worldwide Sales and Design Support Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office closest to you, visit us at cypress ...

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