CDCM1804_17 Datasheet, PDF (9/27 Pages) Texas Instruments – 1:3 LVPECL CLOCK BUFFER + ADDITIONAL LVCMOS OUTPUT AND PROGRAMMABLE DIVIDER

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CDCM1804
SCAS697E – JULY 2003 – REVISED MAY 2005
SUPPLY CURRENT ELECTRICAL CHARACTERISTICS
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
Supply current
I_DD
Full load
No load
All outputs enabled and terminated with 50 Ω to
V_DD – 2 V on LVPECL outputs and 10 pF on LVCMOS
output, f = 800 MHz for LVPECL outputs and 200 MHz for
LVCMOS, V_DD = 3.3 V
Outputs enabled, no output load, f = 800 MHz for LVPECL
outputs and 200 MHz for LVCMOS, V_DD = 3.6 V
Supply current saving per LVPECL
output stage disabled, no load
f = 800 MHz for LVPECL output, V_DD = 3.3 V
160
mA
110
10
mA
I_DDZ Supply current, 3-state
All outputs in the high-impedance state by control logic, f = 0
Hz,
V_DD = 3.6 V
0.5 mA
SUPPLY CURRENT
vs
FREQUENCY
180
V_DD = 3.3 V
T_A = 25°C
170 Load = 10 pF/1k/1k for LVCMOS
50 Ω to V_DD − 2 V for LVPECL
160
3 LVPECL Outputs (÷1),
LVCMOS Output (÷4)
150
3 LVPECL Outputs (÷1)
Running, LVCMOS Output Off
140
130
120
2 LVPECL Outputs (÷1),
LVCMOS Output (÷4)
110
100 300 500 700 900 1100 1300 1500
f − Frequency − MHz
G005
Figure 6.
9