SY89221UHY Micrel Inc, SY89221UHY Datasheet - Page 5

• Manufacturer Part Number: SY89221UHY
• Description: 2.5V/3.3V Integrated Divider + Fanout With 15 LVPECL Outputs Asn FSI Inputs (I Temp, )
• Manufacturer: Micrel Inc
• Series: Precision Edge®r
• Type: Fanout Buffer (Distribution), Divider, Multiplexerr

Specifications of SY89221UHY

• Number Of Circuits: 1
• Ratio - Input:output: 2:15
• Differential - Input:output: Yes/Yes
• Input: CML, LVDS, PECL
• Output: LVPECL
• Frequency - Max: 2GHz
• Voltage - Supply: 2.375 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-TQFP Exposed Pad, 64-eTQFP, 64-HTQFP, 64-VQFP
• Frequency-max: 2GHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-1616

Pin Description
Function Table
Notes:
1.
2.
3.
4.
August 2007
19, 32, 49, 63
Pin Number
/MR
/MR asynchronously forces Q LOW (/Q HIGH).
EN forces Q LOW between 2 and 6 input clock cycles after the falling edge of EN. Refer to “Timing Diagram” section.
EN synchronously enables the outputs between two and six input clock cycles after the rising edge of EN. Refer to “Timing Diagram” section.
FSEL valid for each of the banks A, B, C, and D. Banks can be programmed independent of each other.
1
1
1
1
1
1
1
0
64
(1)
EN
X
1
1
1
1
1
1
0
(2, 3)
Exposed Pad
Pin Name
(continued)
GND,
EN
CLK_SEL
X
X
0
1
0
1
0
1
Pin Function
Single-Ended Input: This TTL/CMOS input disables and enables the outputs. It is
internally connected to a 25kΩ pull-up resistor and will default to logic HIGH state if left
open. When disabled, true outputs go LOW and complementary outputs switches to
HIGH. The input switching threshold is V
description, refer to Figures 2d and 2e.
Ground and exposed pad must be connected to the same GND plane on the board.
FSELx0
X
X
X
X
0
0
1
1
(4)
FSELx1
X
X
0
0
0
0
1
1
5
(4)
IN0÷1
IN1÷1
IN0÷2
IN1÷2
IN0÷4
IN1÷4
CC
Q
0
0
/2. For the input enable and disable functional
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