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NBSG53A Datasheet(PDF) 3 Page - ON Semiconductor

Part No. NBSG53A
Description  2.5 V/3.3 V SiGe Selectable Differential Clock and Data D Flip-Flop/Clock Divider
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NBSG53A Datasheet(HTML) 3 Page - ON Semiconductor

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NBSG53A
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Figure 2. Simplified Logic Diagram
D
D
SEL
CLK
CLK
VTD
VCC
Q
Q
Flip−Flop
(DIV/2)
Flip−Flop
(DFF)
R
D
D
VTD
OLS
R
Q
Q
VEE
VTCLK
VTCLK
R
75 k
W
75 k
W
50
W
50
W
50
W
50
W
0
1
2
2
2
2
2
2
2
Table 2. OUTPUT LEVEL SELECT (OLS)
OLS
Q/Q VPP
OLS Sensitivity
VCC
800 mV
OLS − 75 mV
VCC − 0.4 V
200 mV
OLS
$ 150 mV
VCC − 0.8 V
600 mV
OLS
$ 100 mV
VCC − 1.2 V
0
OLS
$ 75 mV
VEE (Note 4)
400 mV
OLS + 100 mV
Float
600 mV
N/A
4. When an output level of 400 mV is desired and
VCC − VEE > 3.0 V, 2.0 kW resistor should be connected from
OLS to VEE.
Table 3. TRUTH TABLE
R
SEL
D
CLK
Q
Function
H
x
x
x
L
Reset
L
H
L
Z
L
DFF
L
H
H
Z
H
DFF
L
L
x
Z
Q
DIV/2
Z = LOW to HIGH Transition
Table 4. INTERFACING OPTIONS
INTERFACING OPTIONS
CONNECTIONS
CML
Connect VTCLK, VTD and VTCLK, VTD to VCC
LVDS
Connect VTCLK, VTD and VTCLK, VTD Together
AC−COUPLED
Bias VTCLK, VTD and VTCLK, VTD Inputs within Common Mode Range (VIHCMR)
RSECL, PECL, NECL
Standard ECL Termination Techniques
LVTTL, LVCMOS
An External Voltage (Vth) should be Applied to the Unused Complementary Differential Input. Nominal Vth is
1.5 V for LVTTL and VCC/2 for LVCMOS Inputs. This Voltage must be within the Vth Specification.


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