LF2249
DEVICES INCORPORATED
12 x 12-bit Digital Mixer
SWITCHING CHARACTERISTICS
COMMERCIAL OPERATING RANGE (0°C to +70°C) Notes 9, 10 (ns)
LF2249-
*
40
33
25
1
2
Symbol Parameter
Min
Max
Min
Max
Min
Max
tCYC
tPWL
Cycle Time
40
33
25
Clock Pulse Width, LOW
15
10
8
15
10
8
10
10
7
tPWH Clock Pulse Width, HIGH
tS
Input Setup Time
3
tH
Input Hold Time
0
0
0
tD
Output Delay
17
15
15
15
15
15
14
15
15
tENA
tDIS
Three-State Output Enable Delay (Note 11)
Three-State Output Disable Delay (Note 11)
4
5
MILITARY OPERATING RANGE (–55°C to +125°C) Notes 9, 10 (ns)
LF2249-
*
40
*
33
6
Symbol Parameter
Min
Max
Min
Max
tCYC
tPWL
Cycle Time
40
33
7
Clock Pulse Width, LOW
15
10
8
15
10
8
tPWH Clock Pulse Width, HIGH
tS
Input Setup Time
8
tH
Input Hold Time
0
0
tD
Output Delay
17
15
15
15
15
15
9
tENA
tDIS
Three-State Output Enable Delay (Note 11)
Three-State Output Disable Delay (Note 11)
10
11
SWITCHING WAVEFORMS
1
2
3
6
7
8
CLK
tPWH
tPWL
tH
A
11-0 – D11-0
N
N + 1
N + 2
tS
CONTROLS
(Except OE)
tD
HIGH IMPEDANCE
S15-0*
OE
SN
SN + 1
SN + 2
tDIS
tENA
*Assumes ADEL–DDEL = 0000
*DISCONTINUED SPEED GRADE
Video Imaging Products
08/16/2000–LDS.2249-J
5
LOGIC [ LOGIC DEVICES INCORPORATED ]
