IDTCSPT857 Integrated Device Technology, IDTCSPT857 Datasheet - Page 4

• Manufacturer Part Number: IDTCSPT857
• Description: 2.5v Phase Locked Loop Differential 1 10 Sdram Clock Driver
• Manufacturer: Integrated Device Technology

PIN DESCRIPTION (TSSOP)
PIN DESCRIPTION (VFBGA)
FUNCTION TABLE
NOTES:
1. H = HIGH Voltage Level
2. Additional feature that senses when the clock input is less than approximately 20MHz and places the part in sleep mode. Reciever inputs and PLL are turned off and outputs
IDTCSPT857/A
2.5V PLL DIFFERENTIAL 1:10 SDRAM CLOCK DRIVER
2.5V (nom)
L = LOW Voltage Level
Z = High-Impedance OFF-State
X = Don't Care
= tristate.
2.5V (nom)
2.5V (nom)
FBOUT, FBOUT
FBOUT, FBOUT
AV
GND
GND
FBIN, FBIN
FBIN, FBIN
X
X
PWRDWN
PWRDWN
Pin Name
CLK, CLK
Pin Name
CLK, CLK
DD
AGND
AGND
AV
AV
GND
V
GND
V
Y
Y
Y
Y
DDQ
DDQ
[0:9]
[0:9]
[0:9]
[0:9]
(2)
DD
DD
PWRDWN
H
H
H
H
L
L
X
A3, A4, C1, C2, C5, C6, H2, H5, K3, K4
A1, A6, B2, B5, D1, D6, J2, J5, K1, K6
A2, A5, B1, B6, D2, D5, J1, J6, K2, K5
INPUTS
3, 5, 10, 20, 22, 27, 29, 39, 44, 46
1, 7, 8, 18, 24, 25, 31, 41, 42, 48
2, 6, 9, 19, 23, 26, 30, 40, 43, 47
B3, B4, E1, E2, E5, G1, G6, J3, J4
4, 11, 12, 15, 21, 28, 34, 38, 45
(1)
<20MHz
Pin Number
CLK
H
H
H
L
L
L
Pin Number
13, 14
35, 36
32, 33
H6, G5
F1, F2
F5, F6
17
16
37
H1
G2
E6
<20MHz
CLK
H
H
H
L
L
L
Ground for 2.5V analog supply
2.5V analog supply
Differential clock input
Feedback differential clock input
Feedback differential clock output
Ground
Output enable for Y and Y
2.5V supply
Buffered output of input clock, CLK
Buffered output of input clock, CLK
H
H
Y
L
Z
Z
L
Z
Ground for 2.5V analog supply
2.5V analog supply
Differential clock input
Feedback differential clock input
Feedback differential clock output
Ground
Output enable for Y and Y
2.5V supply
Buffered output of input clock, CLK
Buffered output of input clock, CLK
4
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
H
H
Y
L
Z
Z
L
Z
Description
Description
OUTPUTS
FBOUT
H
H
L
Z
Z
L
Z
FBOUT
H
H
L
Z
Z
L
Z
Bypassed/OFF
Bypassed/OFF
OFF
OFF
OFF
PLL
O N
O N