LM12458CIV National Semiconductor, LM12458CIV Datasheet - Page 21
![A/D Converter (A-D) IC](/photos/19/1/190116/3833522_sml.gif)
LM12458CIV
Manufacturer Part Number
LM12458CIV
Description
A/D Converter (A-D) IC
Manufacturer
National Semiconductor
Datasheet
1.LM12458CIV.pdf
(36 pages)
Specifications of LM12458CIV
Resolution (bits)
13bit
Sampling Rate
114kSPS
Input Channel Type
Differential, Single Ended
Data Interface
Parallel
No. Of Pins
44
Input Channels Per Adc
8
Mounting Type
Surface Mount
No. Of Channels
1
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Manufacturer
Quantity
Price
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Part Number:
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Timing Diagrams
outputs. (Continued)
11: WR pulse width
13: WR high to next WR or RD low
14: Data valid to WR high set-up time
15: Data valid to WR high hold time
16: RD low to data bus out of TRI-STATE
22: INT high from RD low
8: RD pulse width
9: RD high to next RD or WR low
V
A
+ = V
D
FIGURE 11. Non-Multiplexed Data Bus (ALE = 1)
+ = +5V, t
FIGURE 12. Interrupt and DMARQ
R
= t
F
= 3 ns, C
21
L
= 100 pF for the INT, DMARQ, D0–D15
17: RD high to TRI-STATE
18: RD low to data valid (access time)
19: Address invalid from RD or WR high (hold time)
20: CS low or address valid to RD low
21: CS low or address valid to WR low
V
DMARQ, D0–D15 outputs.
23: DMARQ low from RD low
A
+ = V
D
+ = +5V, t
R
= t
F
= 3 ns, C
01126418
L
= 100 pF for the INT,
01126417
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