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Descripción |
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74LS670 |
LOW POWER SCHOTTKY
SN74LS670 4 x 4 Register File with 3-State Outputs
The TTL , MSI SN74LS670 is a high-speed, low-power 4 x 4 Register File organized as four words by four bits. Separate read and write inputs, both address and enable, allow simultaneous read and write operation. The 3-state outputs make it possible to connect up to 128 outputs to increase the word capacity up to 512 words. Any number of these devi
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3-STATE 4-by-4 Register File
DM74LS670 3-STATE 4-by-4 Register File
August 1986 Revised March 2000
DM74LS670 3-STATE 4-by-4 Register File
General Description
These register files are organized as 4 words of 4 bits each, and separate on-chip decoding is provided for addressing the four word locations to either write-in or retrieve data. This permits writing into one location, and reading from another word location, simultane
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4-by-4 Register File(with three-state outputs)
19.20 20.00 Max 16 9 7.40 Max 6.30
Unit: mm
1 1.3
1.11 Max
8
0.51 Min
2.54 Min 5.06 Max
7.62
2.54 ± 0.25
0.48 ± 0.10
0.25 0.05 0° 15°
Hitachi Code JEDEC EIAJ Weight (reference value)
+ 0.13
DP-16 Conforms Conforms 1.07 g
Unit: mm
10.06 10.5 Max 16 9
5.5
1
*0.22 ± 0.05 0.20 ± 0.04
8 0.80 Max
2.20 Max
0.20 7.80 + 0.30
1.15 0° 8° 0.70 ± 0.20
1.27 *0.42 ± 0.08 0.40 ± 0
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4 x 4 REGISTER FILE WITH 3-STATE OUTPUTS
SN54, 74LS670 4 x 4 REGISTER FILE WITH 3-STATE OUTPUTS
The TTL , MSI SN54 , 74LS670 is a high-speed, low-power 4 x 4 Register File organized as four words by four bits. Separate read and write inputs, both address and enable, allow simultaneous read and write operation. The 3-state outputs make it possible to connect up to 128 outputs to increase the word capacity up to 512 words. Any number of
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