ICS85314-01 Datasheet, PDF (2/15 Pages) Integrated Circuit Systems – LOW SKEW, 1-TO-5 DIFFERENTIAL-TO-2.5V/3.3V LVPECL FANOUT BUFFER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS85314-01
LOW SKEW, 1-TO-5
DIFFERENTIAL-TO-2.5V/3.3V LVPECL FANOUT BUFFER
TABLE 1. PIN DESCRIPTIONS
Number
Name
Type
Description
1, 2
Q0, nQ0
Output
Differential output pair. LVPECL interface levels.
3, 4
Q1, nQ1 Output
Differential output pair. LVPECL interface levels.
5, 6
Q2, nQ2
Output
Differential output pair. LVPECL interface levels.
7, 8
Q3, nQ3
Output
Differential output pair. LVPECL interface levels.
9, 10
Q4, nQ4
Output
Differential output pair. LVPECL interface levels.
11
V_EE
Power
Negative supply pin.
Clock select input. When HIGH, selects SCLK input.
12
CLK_SEL
Input Pulldown When LOW, selects CLK, nCLK inputs.
LVTTL / LVCMOS interface levels.
13, 17
nc
Unused
No connect.
14
nCLK0
Input
Pullup Inverting differential clock input.
15
CLK0
Input Pulldown Non-inverting differential clock input.
16
CLK1
Input Pulldown Clock input. LVTTL / LVCMOS interface levels.
18, 20
V_CC
Power
Positive supply pins.
Synchronizing clock enable. When LOW, clock outputs follow clock
19
nCLK_EN
Input Pulldown input. When HIGH, Q outputs are forced low, nQ outputs are forced
high. LVTTL / LVCMOS interface levels.
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.
TABLE 2. PIN CHARACTERISTICS
Symbol
C_IN
R_PULLUP
R_PULLDOWN
Parameter
Input Capacitance
Input Pullup Resistor
Input Pulldown Resistor
Test Conditions
Minimum
Typical
51
51
Maximum
4
Units
pF
KΩ
KΩ
85314AG-01
www.icst.com/products/hiperclocks.html
2
REV. B JUNE 21, 2002