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CD74HC85MT 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
逻辑芯片
封装:
SOIC-16
描述:
TEXAS INSTRUMENTS CD74HC85MT 逻辑芯片, 量值比较器, 4通道, SOIC-16
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CD74HC85MT数据手册
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1
Data sheet acquired from Harris Semiconductor
SCHS136E
Features
• Buffered Inputs and Outputs
• Typical Propagation Delay: 13ns (Data to Output at
V
CC
= 5V, C
L
= 15pF, T
A
= 25
o
C
• Serial or Parallel Expansion Without External Gating
• Fanout (Over Temperature Range)
- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55
o
C to 125
o
C
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL
Logic ICs
• HC Types
- 2V to 6V Operation
- High Noise Immunity: N
IL
= 30%, N
IH
= 30%of V
CC
at
V
CC
= 5V
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
V
IL
= 0.8V (Max), V
IH
= 2V (Min)
- CMOS Input Compatibility, I
l
≤ 1µA at V
OL
, V
OH
Pinout
CD54HC85, CD54HCT85 (CERDIP)
CD74HC85 (PDIP, SOIC, SOP, TSSOP)
CD74HCT85 (PDIP, SOIC)
TOP VIEW
Description
The ’HC85 and ’HCT85 are high speed magnitude
comparators that use silicon-gate CMOS technology to
achieve operating speeds similar to LSTTL with the low
power consumption of standard CMOS integrated circuits.
These 4-bit devices compare two binary, BCD, or other
monotonic codes and present the three possible magnitude
results at the outputs (A > B, A < B, and A = B). The 4-bit
input words are weighted (A0 to A3 and B0 to B3), where A3
and B
3
are the most significant bits.
The devices are expandable without external gating, in both
serial and parallel fashion. The upper part of the truth table
indicates operation using a single device or devices in a
serially expanded application. The parallel expansion
scheme is described by the last three entries in the truth
table.
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
B3
(A < B) IN
(A = B) IN
(A > B) IN
(A > B) OUT
(A = B) OUT
GND
(A < B) OUT
V
CC
B2
A2
A1
B1
A0
B0
A3
Ordering Information
PART NUMBER
TEMP. RANGE
(
o
C) PACKAGE
CD54HC85F3A -55 to 125 16 Ld CERDIP
CD54HCT85F3A -55 to 125 16 Ld CERDIP
CD74HC85E -55 to 125 16 Ld PDIP
CD74HC85M -55 to 125 16 Ld SOIC
CD74HC85MT -55 to 125 16 Ld SOIC
CD74HC85M96 -55 to 125 16 Ld SOIC
CD74HC85NSR -55 to 125 16 Ld SOP
CD74HC85PW -55 to 125 16 Ld TSSOP
CD74HC85PWR -55 to 125 16 Ld TSSOP
CD74HC85PWT -55 to 125 16 Ld TSSOP
CD74HCT85E -55 to 125 16 Ld PDIP
CD74HCT85M -55 to 125 16 Ld SOIC
CD74HCT85MT -55 to 125 16 Ld SOIC
CD74HCT85M96 -55 to 125 16 Ld SOIC
NOTE: When ordering, use the entire part number. The suffixes 96
and R denote tape and reel. The suffix T denotes a small-quantity
reel of 250.
August 1997 - Revised October 2003
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
© 2003, Texas Instruments Incorporated
CD54HC85, CD74HC85,
CD54HCT85, CD74HCT85
High-Speed CMOS Logic
4-Bit Magnitude Comparator
[
/Title
(
CD74
H
C85,
C
D74
H
CT85
)
/
Sub-
j
ect
(
High
S
peed
C
MOS
L
ogic
4
-Bit
M
agni-
t
ude
C
om-
p
ara-
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