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参数资料
| 型号： | LM12H458MW/883 |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, CQFP44 |
| 封装： | CERQUAD-44 |
| 文件页数： | 12/12页 |
| 文件大小： | 174K |
| 代理商： | LM12H458MW/883 |
MNLM12H458M-X REV 0A0
MILITARY DATA SHEET
Electrical Characteristics
AC PARAMETER: DIGITAL TIMING CHARACTERISTICS (Continued)
(The following conditions apply to all the following parameters, unless otherwise specified.)
AC:
VA+ = VD+ = 5V, tR=tF=3nS, Cl = 100pF on data I/O, INT and DMARQ lines.
SYMBOL
PARAMETER
CONDITIONS
NOTES
PIN-
NAME
MIN
MAX
UNIT
SUB-
GROUPS
WR Pulse Width
4
60
nS
9, 10,
11
WR High to Next
ALE High
4
75
nS
9, 10,
11
WR High to Next
RD or WR Low
4
140
nS
9, 10,
11
Data Valid to
WR High Set-Up
Time
4
40
nS
9, 10,
11
Data Valid to
WR High Hold Time
4
30
nS
9, 10,
11
RD Low to Data
Bus Out of
TRI-STATE
4
10
70
nS
9, 10,
11
RD High to
TRI-STATE
RL = 1K Ohm
4
10
110
nS
9, 10,
11
RD Low to Data
Valid (Access
Time)
4
10
80
nS
9, 10,
11
Address Invalid
from RD or
WR High
4
10
nS
9, 10,
11
CS Low or Address
Valid to RD Low
4
20
nS
9, 10,
11
CS Low or Address
Valid to WR Low
4
20
nS
9, 10,
11
INT High from
RD Low
4
10
60
nS
9, 10,
11
DMARQ Low from
RD Low
4
10
60
nS
9, 10,
11
Graphics and Diagrams
GRAPHICS#
DESCRIPTION
6268HRA2
LEADED CHIP CARRIER, CQJB, 44LD (B/I CKT)
6288HRA1
CERQUAD, 44LD, STRAIGHT (B/I CKT)
EL44ARE
LEADED CHIP CARRIER, CQJB, 44LD (P/P DWG)
P000108A
LEADED CHIP CARRIER, CQJB, 44LD (PIN OUT)
P000109A
CERQUAD, 44LD STRAIGHT (PIN OUT)
See attached graphics following this page.
9
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