HD74HC238FP-E [RENESAS]
暂无描述;
| 型号： | HD74HC238FP-E |
| 厂家： | 
RENESAS TECHNOLOGY CORP |
| 描述： | 暂无描述 解码器 解复用器 |
| 文件： | 总7页 (文件大小：99K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HD74HC238
3-to-8-line Decoder/Demultiplexer
REJ03D0593–0200
(Previous ADE-205-470)
Rev.2.00
Jan 31, 2006
Description
The HD74HC238 has 3 binary select inputs (A, B and C). If the device is enabled these inputs determine which one of
the eight normally high outputs will go low. Two active low and one active high enables (G1, G2A and G2B) are
provided to ease the cascading of decoders.
Features
•
•
•
•
•
•
High Speed Operation: tpd (Data to Y) = 15 ns typ (CL = 50 pF)
High Output Current: Fanout of 10 LSTTL Loads
Wide Operating Voltage: VCC = 2 to 6 V
Low Input Current: 1 µA max
Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)
Ordering Information
Package Code
(Previous Code)
Package
Abbreviation
Taping Abbreviation
(Quantity)
Part Name
HD74HC238P
Package Type
DILP-16 pin
PRDP0016AE-B
(DP-16FV)
P
—
PRSP0016DH-B
(FP-16DAV)
HD74HC238FPEL SOP-16 pin (JEITA)
HD74HC238RPEL SOP-16 pin (JEDEC)
FP
RP
EL (2,000 pcs/reel)
EL (2,500 pcs/reel)
PRSP0016DG-A
(FP-16DNV)
Note: Please consult the sales office for the above package availability.
Function Table
Inputs
Outputs
Y3
Enable
Select
G1
X
G2A
X
G2B
H
X
X
L
C
X
X
X
L
B
X
X
X
L
A
X
X
X
L
Y0
L
L
L
H
L
L
L
L
L
L
L
Y1
L
L
L
L
H
L
L
L
L
L
L
Y2
L
L
L
L
L
H
L
L
L
L
L
Y4
L
L
L
L
L
L
L
H
L
L
L
Y5
L
L
L
L
L
L
L
L
H
L
L
Y6
L
L
L
L
L
L
L
L
L
H
L
Y7
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
H
L
L
L
L
X
H
L
X
H
H
H
H
H
H
H
H
L
L
L
L
L
H
L
L
L
L
H
H
L
L
L
L
H
L
L
L
H
H
H
H
L
L
L
L
H
L
L
H
H
L
L
H
H :
High level
Low level
Irrelevant
L :
X :
Rev.2.00 Jan 31, 2006 page 1 of 6
HD74HC238
Pin Arrangement
A
B
1
2
3
4
5
6
7
8
16 VCC
15 Y0
14 Y1
13 Y2
12 Y3
11 Y4
10 Y5
A
Select
Inputs
B
Y0
Y1
Y2
Y3
Y4
Y5
C
C
G
2A
2B
G2A
G2B
G1
Y7
Enable
Inputs
G
Outputs
G1
Output Y7
GND
Y6
9
Y6
(Top view)
Logic Diagram
G1
G2B
G2A
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
A
B
C
Rev.2.00 Jan 31, 2006 page 2 of 6
HD74HC238
Absolute Maximum Ratings
Item
Supply voltage range
Input / Output voltage
Input / Output diode current
Output current
Symbol
VCC
Ratings
–0.5 to 7.0
–0.5 to VCC +0.5
±20
Unit
V
VIN, VOUT
IIK, IOK
IO
V
mA
mA
mA
mW
°C
±35
VCC, GND current
ICC or IGND
PT
±75
Power dissipation
500
Storage temperature
Tstg
–65 to +150
Note: The absolute maximum ratings are values, which must not individually be exceeded, and furthermore, no two of
which may be realized at the same time.
Recommended Operating Conditions
Item
Supply voltage
Symbol
VCC
Ratings
2 to 6
Unit
V
Conditions
Input / Output voltage
Operating temperature
Input rise / fall time*1
VIN, VOUT
Ta
0 to VCC
–40 to 85
0 to 1000
0 to 500
0 to 400
V
°C
ns
tr, tf
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
Notes: 1. This item guarantees maximum limit when one input switches.
Waveform: Refer to test circuit of switching characteristics.
Electrical Characteristics
Ta = 25°C
Typ Max
Ta = –40 to+85°C
Item
Symbol VCC (V)
VIH
Unit
Test Conditions
Min
1.5
3.15
4.2
—
Min
1.5
3.15
4.2
—
Max
—
Input voltage
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
6.0
—
—
—
—
V
—
—
—
—
VIL
—
0.5
1.35
1.8
—
0.5
1.35
1.8
—
V
V
—
—
—
—
—
—
Output voltage
VOH
1.9
4.4
5.9
4.18
5.68
—
2.0
4.5
6.0
—
1.9
4.4
5.9
4.13
5.63
—
Vin = VIH or VIL IOH = –20 µA
—
—
—
—
—
—
IOH = –4 mA
IOH = –5.2 mA
—
—
—
VOL
0.0
0.0
0.0
—
0.1
0.1
0.1
0.26
0.26
±0.5
0.1
0.1
0.1
0.33
0.33
±5.0
V
Vin = VIH or VIL IOL = 20 µA
—
—
—
—
—
—
IOL = 4 mA
—
—
—
IOL = 5.2 mA
Off-state output
current
IOZ
—
—
—
µA Vin = VIH or VIL,
Vout = VCC or GND
Input current
Iin
6.0
6.0
—
—
—
—
±0.1
—
—
±1.0
µA Vin = VCC or GND
Quiescent supply
current
ICC
4.0
40
µA Vin = VCC or GND, Iout = 0 µA
Rev.2.00 Jan 31, 2006 page 3 of 6
HD74HC238
Switching Characteristics
(CL = 50 pF, Input tr = tf = 6 ns)
Ta = 25°C
Typ Max
Ta = –40 to +85°C
Item
Symbol VCC (V)
Unit
Test Conditions
Min
—
—
—
—
—
—
—
—
—
—
Min
—
—
—
—
—
—
—
—
—
—
Max
190
38
Propagation delay
time
tPLH
tPHL
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
—
—
15
—
—
13
—
—
5
150
30
ns Select to Y
26
150
30
33
190
38
ns Enable to Y
26
75
15
33
Output rise/fall
time
tTLH
tTHL
95
ns
19
—
5
13
10
16
Input capacitance
Cin
10
pF
Test Circuit
Measurement point
*
C L
Note: CL includes the probe and fig capacitance.
Waveforms
tr
tf
VCC
0 V
90 %
50 %
90 %
50 %
Input
10 %
10 %
tPLH
tPHL
VOH
90 %
90 %
50 %
10 %
50 %
10 %
Same-phase output
VOL
tTLH
tTHL
tPLH
tPHL
VOH
90 %
90 %
50 %
10 %
50 %
10 %
Inverse-phase output
VOL
tTLH
tTHL
Notes: 1. Input waveform: PRR ≤ 1 MHz, Zo = 50 Ω, tr ≤ 6 ns, tf ≤ 6 ns
2. The output are measured one at a time with one transition per measurement.
Rev.2.00 Jan 31, 2006 page 4 of 6
HD74HC238
Package Dimensions
JEITA Package Code
P-DIP16-6.3x19.2-2.54
RENESAS Code
Previous Code
DP-16FV
MASS[Typ.]
1.05g
PRDP0016AE-B
D
16
9
1
8
b 3
0.89
Z
Dimension in Millimeters
Reference
Symbol
Min
Nom
7.62
19.2
6.3
Max
e
1
D
20.32
7.4
E
A
5.06
A 1
0.51
0.40
b
0.48
1.30
0.25
0.56
p
bp
e
c
b
3
c
θ
0.19
0.31
e 1
0
°
15°
e
Z
L
2.29
2.54
2.54
2.79
1.12
( Ni/Pd/Au plating )
JEITA Package Code
RENESAS Code
PRSP0016DH-B
Previous Code
FP-16DAV
MASS[Typ.]
0.24g
P-SOP16-5.5x10.06-1.27
NOTE)
1. DIMENSIONS"*1 (Nom)"AND"*2"
DO NOT INCLUDE MOLD FLASH.
2. DIMENSION"*3"DOES NOT
INCLUDE TRIM OFFSET.
*1
D
F
16
9
bp
Index mark
Dimension in Millimeters
Reference
Symbol
Min
Nom
10.06
5.50
Max
10.5
Terminal cross section
( Ni/Pd/Au plating )
D
E
1
8
bp
A 2
A 1
A
*3
e
0.00
0.34
0.15
0.10
0.40
0.20
0.20
2.20
0.46
Z
x
M
L1
b p
b 1
c
0.25
c
1
θ
H E
e
0
°
8°
7.50
7.80
1.27
8.00
y
x
0.12
0.15
0.80
0.90
L
y
Z
Detail F
L
0.50
0.70
1.15
L
1
Rev.2.00 Jan 31, 2006 page 5 of 6
HD74HC238
JEITA Package Code
P-SOP16-3.95x9.9-1.27
RENESAS Code
PRSP0016DG-A
Previous Code
FP-16DNV
MASS[Typ.]
0.15g
NOTE)
*1
D
F
1. DIMENSIONS"*1 (Nom)"AND"*2"
DO NOT INCLUDE MOLD FLASH.
2. DIMENSION"*3"DOES NOT
INCLUDE TRIM OFFSET.
16
9
b p
Index mark
Dimension in Millimeters
Reference
Symbol
Min
Nom
9.90
3.95
Max
Terminal cross section
( Ni/Pd/Au plating )
D
10.30
E
A 2
A 1
A
1
8
0.10
0.34
0.15
0.14
0.40
0.20
0.25
1.75
0.46
*3
e
Z
bp
x
M
L1
b p
b 1
c
0.25
c
1
θ
H E
e
0
°
8°
5.80
6.10
1.27
6.20
x
0.25
0.15
L
y
y
Z
0.635
1.27
Detail F
L
0.40
0.60
1.08
L
1
Rev.2.00 Jan 31, 2006 page 6 of 6
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