74HCT541PW-T [NXP]
IC HCT SERIES, 8-BIT DRIVER, TRUE OUTPUT, PDSO20, PLASTIC, TSSOP-20, Bus Driver/Transceiver;
| 型号： | 74HCT541PW-T |
| 厂家： | 
NXP |
| 描述： | IC HCT SERIES, 8-BIT DRIVER, TRUE OUTPUT, PDSO20, PLASTIC, TSSOP-20, Bus Driver/Transceiver 驱动器 |
| 文件： | 总7页 (文件大小：47K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
DATA SHEET
For a complete data sheet, please also download:
• The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications
• The IC06 74HC/HCT/HCU/HCMOS Logic Package Information
• The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines
74HC/HCT541
Octal buffer/line driver; 3-state
December 1990
Product specification
File under Integrated Circuits, IC06
Philips Semiconductors
Product specification
Octal buffer/line driver; 3-state
74HC/HCT541
The 74HC/HCT541 are octal non-inverting buffer/line
drivers with 3-state outputs. The 3-state outputs are
controlled by the output enable inputs OE1 and OE2.
A HIGH on OEn causes the outputs to assume a high
impedance OFF-state.
FEATURES
• Non-inverting outputs
• Output capability: bus driver
• ICC category: MSI
The “541” is identical to the “540” but has non-inverting
outputs.
GENERAL DESCRIPTION
The 74HC/HCT541 are high-speed Si-gate CMOS devices
and are pin compatible with low power Schottky TTL
(LSTTL). They are specified in compliance with JEDEC
standard no. 7A.
QUICK REFERENCE DATA
GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns
TYPICAL
SYMBOL
PARAMETER
CONDITIONS
UNIT
ns
HC
HCT
12
tPHL/ tPLH
CI
propagation delay An to Yn
input capacitance
CL = 15 pF; VCC = 5 V
10
3.5
37
3.5
39
pF
pF
CPD
power dissipation capacitance per buffer notes 1 and 2
Notes
1. CPD is used to determine the dynamic power dissipation (PD in µW):
PD = CPD × VCC2 × fi + ∑ (CL × VCC2 × fo) where:
fi = input frequency in MHz
fo = output frequency in MHz
∑ (CL × VCC2 × fo) = sum of outputs
CL = output load capacitance in pF
VCC = supply voltage in V
2. For HC the condition is VI = GND to VCC
For HCT the condition is VI = GND to VCC − 1.5 V
ORDERING INFORMATION
See “74HC/HCT/HCU/HCMOS Logic Package Information”.
December 1990
2
Philips Semiconductors
Product specification
Octal buffer/line driver; 3-state
74HC/HCT541
PIN DESCRIPTION
PIN NO.
SYMBOL
NAME AND FUNCTION
1, 19
OE1, OE2
A0 to A7
GND
output enable input (active LOW)
data inputs
2, 3, 4, 5, 6, 7, 8, 9
10
ground (0 V)
18, 17, 16, 15, 14, 13, 12, 11
20
Y0 to Y7
VCC
bus outputs
positive supply voltage
Fig.1 Pin configuration.
Fig.2 Logic symbol.
Fig.3 IEC logic symbol.
December 1990
3
Philips Semiconductors
Product specification
Octal buffer/line driver; 3-state
74HC/HCT541
FUNCTION TABLE
INPUTS
OUTPUT
OE1
OE2
An
Yn
L
L
X
H
L
L
H
X
L
H
X
X
L
H
Z
Z
Notes
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care
Z = high impedance OFF-state
Fig.4 Functional diagram.
Fig.5 Logic diagram.
December 1990
4
Philips Semiconductors
Product specification
Octal buffer/line driver; 3-state
74HC/HCT541
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: bus driver
ICC category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
74HC
SYMBOL PARAMETER
UNIT
VCC
+25
−40 to +85 −40 to +125
WAVEFORMS
(V)
min. typ. max. min. max. min. max.
tPHL/ tPLH propagation delay
An to Yn
33
12
10
115
23
20
145
29
25
175
35
30
ns
ns
ns
ns
2.0 Fig.6
4.5
6.0
t
t
t
PZH/ tPZL 3-state output
enable time
55
20
16
160
32
27
200
40
34
240
48
41
2.0 Fig.7
4.5
6.0
OE to Yn
PHZ/ tPLZ 3-state output
disable time
61
22
18
160
32
27
200
40
34
240
48
41
2.0 Fig.7
4.5
6.0
OE to Yn
THL/ tTLH output transition time
14
5
4
60
12
10
75
15
13
90
18
15
2.0 Fig.6
4.5
6.0
December 1990
5
Philips Semiconductors
Product specification
Octal buffer/line driver; 3-state
74HC/HCT541
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: bus driver
ICC category: MSI
Note to HCT types
The value of additional quiescent supply current (∆ICC) for a unit load of 1 is given in the family specifications.
To determine ∆ICC per input, multiply this value by the unit load coefficient shown in the table below.
INPUT
UNIT LOAD COEFFICIENT
OE1
OE2
An
1.50
1.00
0.70
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
74HCT
SYMBOL PARAMETER
UNIT
VCC
+25
−40 to +85 −40 to +125
WAVEFORMS
(V)
min. typ. max. min. max. min. max.
tPHL/ tPLH propagation delay
An to Yn
15
21
21
5
28
35
35
12
35
44
44
15
42
53
53
18
ns
ns
ns
ns
4.5 Fig.6
4.5 Fig.7
4.5 Fig.7
4.5 Fig.6
t
t
t
PZH/ tPZL 3-state output enable time
OE to Yn
PHZ/ tPLZ 3-state output disable time
OE to Yn
THL/ tTLH output transition time
December 1990
6
Philips Semiconductors
Product specification
Octal buffer/line driver; 3-state
74HC/HCT541
AC WAVEFORMS
(1) HC : VM = 50%; VI = GND to VCC
.
HCT: VM = 1.3 V; VI = GND to 3 V.
Fig.6 Waveforms showing the input (An) to output (Yn) propagation delays and the output transition times.
(1) HC : VM = 50%; VI = GND to VCC
.
HCT: VM = 1.3 V; VI = GND to 3 V.
Fig.7 Waveforms showing the 3-state enable and disable times.
PACKAGE OUTLINES
See “74HC/HCT/HCU/HCMOS Logic Package Outlines”.
December 1990
7
相关型号：
74HCT563D
IC HCT SERIES, 8-BIT DRIVER, INVERTED OUTPUT, PDSO20, PLASTIC, SO-20, Bus Driver/Transceiver
NXP
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