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74HC237N 数据表(PDF) 1 Page - NXP Semiconductors

部件名 74HC237N
功能描述  3-to-8 line decoder, demultiplexer with address latches
Download  17 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

74HC237N 数据表(HTML) 1 Page - NXP Semiconductors

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1.
General description
The 74HC237 is a high-speed Si-gate CMOS device and is pin compatible with low power
Schottky TTL (LSTTL). The 74HC237 is specified in compliance with JEDEC
standard no. 7A.
The 74HC237 is a 3-to-8 line decoder, demultiplexer with latches at the three address
inputs (An). The 74HC237 essentially combines the 3-to-8 decoder function with a 3-bit
storage latch. When the latch is enabled (LE = LOW), the 74HC237 acts as a 3-to-8 active
LOW decoder. When the latch enable (LE) goes from LOW-to-HIGH, the last data present
at the inputs before this transition, is stored in the latches. Further address changes are
ignored as long as LE remains HIGH. The output enable input (E1 and E2) controls the
state of the outputs independent of the address inputs or latch operation. All outputs are
HIGH unless E1 is LOW and E2 is HIGH. The 74HC237 is ideally suited for implementing
non-overlapping decoders in 3-state systems and strobed (stored address) applications in
bus oriented systems.
2.
Features and benefits
Combines 3-to-8 decoder with 3-bit latch
Multiple input enable for easy expansion or independent controls
Active HIGH mutually exclusive outputs
Low-power dissipation
ESD protection:
HBM JESD22-A114F exceeds 2 000 V
MM JESD22-A115-A exceeds 200 V
Multiple package options
Specified from
40 Cto+85 C and from 40 Cto+125 C
3.
Ordering information
74HC237
3-to-8 line decoder, demultiplexer with address latches
Rev. 4 — 10 January 2011
Product data sheet
Table 1.
Ordering information
Type number
Package
Temperature range
Name
Description
Version
74HC237N
40 C to +125 C
DIP16
plastic dual in-line package; 16 leads (300 mil)
SOT38-4
74HC237D
40 C to +125 C
SO16
plastic small outline package; 16 leads; body width
3.9 mm
SOT109-1
74HC237DB
40 C to +125 C
SSOP16
plastic shrink small outline package; 16 leads;
body width 5.3 mm
SOT338-1


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