LMK00306 Datasheet, PDF (3/25 Pages) Texas Instruments – 3-GHz 6-Output Differential Clock Buffer/Level Translator

6.0 Pin Descriptions
Pin #
DAP
1, 19, 28
Pin Name(s)
DAP
GND
2, 5
3, 4
6, 7
8, 9
10, 36
V_CCOA
CLKoutA0, CLKoutA0*
CLKoutA1, CLKoutA1*
CLKoutA2, CLKoutA2*
CLKoutA_TYPE0,
CLKoutA_TYPE1
11, 32
Vcc
12
13
14, 17
15, 16
18, 29
20, 21
22, 23
24, 27
25, 26
30, 31
33
34
35
OSCin
OSCout
CLKin_SEL0, CLKin_SEL1
CLKin0, CLKin0*
CLKoutB_TYPE0,
CLKoutB_TYPE1
CLKoutB2*, CLKoutB2
CLKoutB1*, CLKoutB1
V_CCOB
CLKoutB0*, CLKoutB0
CLKin1*, CLKin1
REFout
V_CCOC
REFout_EN
Type
GND
GND
PWR
O
O
O
Description
Die Attach Pad. Connect to the PCB ground plane for heat dissipation.
Ground
Power supply for Bank A Output buffers. V_CCOA can operate from 3.3 V or
2.5 V. The V_CCOA pins are internally tied together. Bypass with a 0.1 uF
low-ESR capacitor placed very close to each Vcco pin. (Note 1)
Differential clock output A0. Output type set by CLKoutA_TYPE pins.
Differential clock output A1. Output type set by CLKoutA_TYPE pins.
Differential clock output A2. Output type set by CLKoutA_TYPE pins.
I Bank A output buffer type selection pins (Note 2)
PWR
I
O
I
I
Power supply for Core and Input buffer blocks. The Vcc supply operates
from 3.3 V. Bypass with a 0.1 uF low-ESR capacitor placed very close to
each Vcc pin.
Input for crystal. Can also be driven by a XO, TCXO, or other external
single-ended clock.
Output for crystal. Leave OSCout floating if OSCin is driven by a single-
ended clock.
Clock input selection pins (Note 2)
Universal clock input 0 (differential/single-ended)
I Bank B output buffer type selection pins (Note 2)
O
O
PWR
O
I
O
PWR
I
Differential clock output B2. Output type set by CLKoutB_TYPE pins.
Differential clock output B1. Output type set by CLKoutB_TYPE pins.
Power supply for Bank B Output buffers. V_CCOB can operate from 3.3 V or
2.5 V. The V_CCOB pins are internally tied together. Bypass with a 0.1 uF
low-ESR capacitor placed very close to each Vcco pin. (Note 1)
Differential clock output B0. Output type set by CLKoutB_TYPE pins.
Universal clock input 1 (differential/single-ended)
LVCMOS reference output. Enable output by pulling REFout_EN pin high.
Power supply for REFout Output buffer. V_CCOC can operate from 3.3 V or
2.5 V. Bypass with a 0.1 uF low-ESR capacitor placed very close to each
Vcco pin. (Note 1)
REFout enable input. Enable signal is internally synchronized to selected
clock input. (Note 2)
Note 1: The output supply voltages or pins (V_CCOA, V_CCOB, and V_CCOC) will be called V_CCO in general when no distinction is needed, or when the output supply
can be inferred from the output bank/type.
Note 2: CMOS control input with internal pull-down resistor.
Note 3: Any unused output pins should be left floating with minimum copper length (Note 5), or properly terminated if connected to a transmission line, or disabled/
Hi-Z if possible. See Section 7.3 Clock Outputs for output configuration or Section 14.3 Termination and Use of Clock Drivers for output interface and termination
techniques.
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