cy2dp818-2 Cypress Semiconductor Corporation., cy2dp818-2 Datasheet

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cy2dp818-2

Manufacturer Part Number
cy2dp818-2
Description
1 8 Clock Fanout Buffer
Manufacturer
Cypress Semiconductor Corporation.
Datasheet
Cypress Semiconductor Corporation
Document #: 38-07588 Rev. **
Features
• Low-voltage operation V
• 1:8 fanout
• Single-input-configurable for LVDS, LVPECL, or LVTTL
• 8 pairs of LVPECL outputs with enable/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/700 Mbps
Block Diagram
INPUT A
INPUT B
InConfig
(LVPECL / LVDS / LVTTL)
INPUT
EN7
EN4
EN5
EN6
EN1
EN2
EN3
DD
= 3.3V
OUTPUT
(LVPECL)
3901 North First Street
Q5A
Q3A
Q3B
Q4A
Q4B
Q5B
Q6A
Q6B
Q7A
Q7B
PRELIMINARY
Q8A
Q8B
Q1A
Q1B
Q2A
Q2B
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/or for the distribution of
LVPECL-based clock signals.
The Cypress CY2DP818-2 has configurable input functions.
The input is user-configurable via the Inconfig pin for single
ended or differential input.
Pin Configuration
INPUT B
INPUT A
InConfig
GND
GND
GND
GND
GND
VDD
VDD
VDD
EN1
EN2
EN3
EN4
VDD
EN5
EN6
EN7
1:8 Clock Fanout Buffer
San Jose
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
38-pin TSSOP
,
CA 95134
Revised November 5, 2003
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
CY2DP818-2
Q3B
Q4B
Q5A
Q8A
GND
Q1A
Q1B
Q2A
Q2B
Q3A
Q4A
VDD
Q5B
Q6A
Q6B
Q7A
Q7B
Q8B
GND
408-943-2600
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cy2dp818-2 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/or for the distribution of LVPECL-based clock signals. The Cypress CY2DP818-2 has configurable input functions. ...

Page 2

... Input Receiver Type 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 Description Min. Typ. Max. Unit 1.5 2.0 mA/ MHz 350 ...

Page 3

... Min – 3.3V ± 5 Conditions V = Min ohm Min ohm CY2DP818-2 Min. Max. Unit –0.3 4.6 –0 0.3 DD applied –0 0 –0 0.9 DD – –65 +150 ° °C – ...

Page 4

... User-defined by VTT RTT Max GND DD OUT = 3.3V ± 5 0°C to 70°C or –40°C to 85° Description Conditions 45%–55% duty cycle Standard load circuit Figure 1. Driver Design CY2DP818-2 = 0°C to 70°C or –40°C to 85°C) (continued) A Min. Typ. Max. Unit 300 1200 ps 2.1 – 3.0 V 0.8 – ...

Page 5

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

Page 6

... GND 150 Standard Termination 1.4V 1.0V 0. & Package Type 38-pin TSSOP 38-pin TSSOP–Tape and Reel 38-pin TSSOP 38-pin TSSOP–Tape and Reel CY2DP818-2 TPA 50 TPC VDD-2V 50 TPB 100% 80% 20 [2,3,4, fig [7] Figure 6 ...

Page 7

... The inclusion of Cypress 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. PRELIMINARY 38-lead TSSOP (4.40 mm Body) Z38 CY2DP818-2 51-85151-** Page [+] Feedback ...

Page 8

... Document History Page Document Title: CY2DP818-2 1:8 Clock Fanout Buffer Document Number: 38-07588 REV. ECN NO. Issue Date ** 129879 11/07/03 Document #: 38-07588 Rev. ** PRELIMINARY Orig. of Change Description of Change RGL New Data Sheet CY2DP818-2 Page [+] Feedback ...

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