PDF《74HC154; 74HCT154》

1.

General description The 74HC154;

74HCT154 is a high-speed Si-gate CMOS device and is pin compatible with Low-power Schottky TTL (LSTTL). The 74HC154;

74HCT154 decoders accept four active HIGH binary address inputs and provide

16 mutually-exclusive active LOW outputs. The two-input enable gate can be used to strobe the decoder to eliminate the normal decoding '

glitches'

on the outputs, or can be used for the expansion of the decoder. The enable gate has two ANDed inputs which must be LOW to enable the outputs. The 74HC154;

74HCT154 can be used as a 1-to-16 demultiplexer by using one of the enable inputs as the multiplexed data input. When the other enable input is LOW, the addressed output will follow the state of the applied data. 2. Features I 16-line demultiplexing capability I Decodes

4 binary-coded inputs into

16 mutually-exclusive outputs I Complies with JEDEC standard no. 7A I Speci?ed from ?40 °C to +85 °C and ?40 °C to +125 °C I ESD protection: N HBM EIA/JESD22-A114D exceeds

2000 V N MM EIA/JESD22-A115-A exceeds

200 V 3. Ordering information 74HC154;

74HCT154 4-to-16 line decoder/demultiplexer Rev.

06 ―

12 February

2007 Product data sheet Table 1. Ordering information Type number Package Temperature range Name Description Version 74HC154 74HC154N ?40 °C to +125 °C DIP24 plastic dual in-line package;

24 leads (600 mil) SOT101-1 74HC154D ?40 °C to +125 °C SO24 plastic small outline package;

24 leads;

body width 7.5 mm SOT137-1 74HC154DB ?40 °C to +125 °C SSOP24 plastic shrink small outline package;

24 leads;

body width 5.3 mm SOT340-1 74HC154PW ?40 °C to +125 °C TSSOP24 plastic thin shrink small outline package;

24 leads;

body width 4.4 mm SOT355-1 74HC_HCT154_6 ? NXP B.V. 2007. All rights reserved. Product data sheet Rev.

06 ―

12 February

2007 2 of

21 NXP Semiconductors 74HC154;

74HCT154 4-to-16 line decoder/demultiplexer 4. Functional diagram 74HC154BQ ?40 °C to +125 °C DHVQFN24 plastic dual in-line compatible thermal enhanced very thin quad ?at package;

no leads;

24 terminals;

body 3.5 * 5.5 * 0.85 mm SOT815-1 74HCT154 74HCT154N ?40 °C to +125 °C DIP24 plastic dual in-line package;

24 leads (600 mil) SOT101-1 74HCT154D ?40 °C to +125 °C SO24 plastic small outline package;

24 leads;

body width 7.5 mm SOT137-1 74HCT154DB ?40 °C to +125 °C SSOP24 plastic shrink small outline package;

24 leads;

body width 5.3 mm SOT340-1 74HCT154PW ?40 °C to +125 °C TSSOP24 plastic thin shrink small outline package;

24 leads;

body width 4.4 mm SOT355-1 74HCT154BQ ?40 °C to +125 °C DHVQFN24 plastic dual in-line compatible thermal enhanced very thin quad ?at package;

no leads;

24 terminals;

body 3.5 * 5.5 * 0.85 mm SOT815-1 Table 1. Ordering information …continued Type number Package Temperature range Name Description Version Fig 1. Functional diagram 001aab071

20 21

22 DECODER

23 7 A3 A2 A1 A0 E0 Y6

6 Y5

5 Y4

4 Y3

3 Y2

2 Y1

1 18

19 Y0 E1

8 Y7

9 Y8

10 Y9

11 Y10

13 Y11

14 Y12

15 Y13

16 Y14

17 Y15 74HC_HCT154_6 ? NXP B.V. 2007. All rights reserved. Product data sheet Rev.

06 ―

12 February

2007 3 of

21 NXP Semiconductors 74HC154;

74HCT154 4-to-16 line decoder/demultiplexer Fig 2. Logic symbol Fig 3. IEC logic symbol 001aab069 A3 Y15

20 17 Y14

16 Y1

2 Y0

1 A2

21 A1

22 A0

23 18

19 E0 E1 001aab070

22 21

3 0

15 DX

20 0

0 G

23 2

3 4

1 2

3 1