XRK4991A Datasheet, PDF (8/13 Pages) Exar Corporation – 3.3V HIGH-SPEED (85 MHZ) PROGRAMMABLE SKEW CLOCK BUFFER

XRK4991A
PRELIMINARY
3.3V HIGH-SPEED (85 MHZ) PROGRAMMABLE SKEW CLOCK BUFFER
xr
REV. P1.0.2
TABLE 5: POWER REQUIREMENTS (VCC = 3.3V + 10% OPERATING RANGE)
SYMBOL
PARAMETER
TEST CONDITIONS
TYP
I_CCQ Quiescent Power Supply Current
V_CC=Max., TEST=MID, CLKIN=LOW
8
PE=LOW, OE=LOW,
All outputs unloaded
∆I_CC Power Supply Current per Input HIGH
V_CC = Max., V_IN = 3V
1
I_CCD Dynamic Power Supply Current per Out- V_CC = Max., CL = 0pF
55
put
I_TOT Total Power Supply Current
V_CC=3.3V, F_CLKIN=20MHz,
29
C_L=160pF⁽¹⁾
V_CC=3.3V, F_CLKIN=33MHz,
42
C_L=160pF⁽¹⁾
V_CC=3.3V, F_CLKIN=66MHz,
76
C_L=160pF⁽¹⁾
NOTE: (1) For eight outputs, each loaded with 20pF.
MAX.
25
UNIT
mA
30
µA
90 µA/MHz
mA
SYMBOL
t_R, t_F
t_PWC
D_H
CLKIN
TABLE 6: INPUT TIMING REQUIREMENTS
DESCRIPTION(1)
Maximum input rise and fall times, 0.8V to 2V
MIN.
Input clock pulse, HIGH or LOW
3
Input duty cycle
10
Reference Clock Input
3.75
NOTE: (1) Where pulse width implied by D_H is less than t_PWC limit, t_PWC limit applies.
MAX.
10
90
85
UNIT
ns/V
ns
%
MHz
8