LM12458CIV/NOPB National Semiconductor, LM12458CIV/NOPB Datasheet - Page 21

• Manufacturer Part Number: LM12458CIV/NOPB
• Description: IC ACQUISITION SYS 12BIT 44-PLCC
• Manufacturer: National Semiconductor
• Type: Data Acquisition System (DAS)r

Specifications of LM12458CIV/NOPB

• Resolution (bits): 12 b
• Sampling Rate (per Second): 140k
• Data Interface: Parallel
• Voltage Supply Source: Analog and Digital
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM12458CIV; *LM12458CIV/NOPB; LM12458CIV

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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