ICS83905I Datasheet, PDF (2/16 Pages) Integrated Circuit Systems – LOW SKEW, 1:6 CRYSTAL INTERFACE-TO LVCMOS/LVTTL FANOUT BUFFER

Integrated
Circuit
Systems, Inc.
TABLE 1. PIN DESCRIPTIONS
Number
1
2, 15
3, 7, 11
4, 6, 8,
10, 12, 14
5, 13
9
16
Name
XTAL_OUT
ENABLE 2, ENABLE 1
GND
BCLK0, BCLK1, BCLK2,
BCLK3, BCLK4, BCLK5
V_DDO
V_DD
XTAL_IN
Type
Output
Input
Power
Output
Power
Power
Input
ICS83905I
LOW SKEW, 1:6 CRYSTAL INTERFACE-TO-
LVCMOS / LVTTL FANOUT BUFFER
Description
Crystal oscillator interface. XTAL_OUT is the output.
Clock enable. LVCMOS / LVTTL interface levels. See Table 3.
Power supply ground.
Clock outputs. LVCMOS / LVTTL interface levels.
Output supply pin.
Core supply pin.
Crystal oscillator interface. XTAL_IN is the input.
TABLE 2. PIN CHARACTERISTICS
Symbol
C_IN
Parameter
Input Capacitance
C_PD
Power Dissipation Capacitance
(per output)
R
OUT
Output Impedance
Test Conditions
V_DDO = 3.465V
V_DDO = 2.625V
V_DDO = 2V
V_DDO = 3.3V ± 5%
V = 2.5V ± 5%
DDO
V_DDO = 1.8V ± 0.2V
Minimum
Typical
4
7
7
10
Maximum
19
18
16
Units
pF
pF
pF
pF
Ω
Ω
Ω
TABLE 3. OUTPUT ENABLE AND CLOCK ENABLE FUNCTION TABLE
Control Inputs
ENABLE 1 ENABLE 2
0
0
0
1
1
0
1
1
Outputs
BCLK0:BCLK4
BCLK5
LOW
LOW
LOW
Toggling
Toggling
LOW
Toggling
Toggling
BCLK5
BCLK0:4
ENABLE2
ENABLE1
83905AGI
FIGURE 1. ENABLE TIMING DIAGRAM
http://www.icst.com/products/hiperclocks.html
2
REV. B MAY 16, 2005