DataSheet26.com

даташит TC74HC238AF PDF ( Datasheet )

TC74HC238AF Datasheet Download - Toshiba

Номер произв TC74HC238AF
Описание 3-to-8 Line Decoder
Производители Toshiba
логотип Toshiba логотип 



1Page
		

No Preview Available !

TC74HC238AF Даташит, Описание, Даташиты
TC74HC238AP/AF
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74HC238AP,TC74HC238AF
3-to-8 Line Decoder
The TC74HC238A is a high speed CMOS 3-to-8 DECODER
fabricated with silicon gate C2MOS technology.
It achieves the high speed operation similar to equivalent
LSTTL while maintaining the CMOS low power dissipation.
When the device is enabled, 3 Binary Select inputs (A, B and C)
determine which one of the outputs (Y0-Y7) will go high.
When enable input G1 is held low or either G2A or G2B is
held high, decoding function is inhibited and all the outputs go
low. G1, G2A , and G2B inputs are provided ease cascade
connection and for use as an adress decoder for memory systems.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
Features
High speed: tpd = 14 ns (typ.) at VCC = 5 V
Low power dissipation: ICC = 4 μA (max) at Ta = 25°C
High noise immunity: VNIH = VNIL = 28% VCC (min)
Output drive capability: 10 LSTTL loads
Symmetrical output impedance: |IOH| = IOL = 4 mA (min)
Balanced propagation delays: tpLH ∼− tpHL
Wide operating voltage range: VCC (opr) = 2~6 V
Pin and function compatible with 74LS238
Pin Assignment
TC74HC238AP
TC74HC238AF
Weight
DIP16-P-300-2.54A
SOP16-P-300-1.27A
: 1.00 g (typ.)
: 0.18 g (typ.)
1 2007-10-01







No Preview Available !

TC74HC238AF Даташит, Описание, Даташиты
IEC Logic Symbol
TC74HC238AP/AF
Truth Table
Inputs
Enable
G1 G2A G2B C
LXXX
XHXX
XXHX
HL L L
HL L L
HL L L
HL L L
HL LH
HL LH
HL LH
HL LH
Select
B
X
X
X
L
L
H
H
L
L
H
H
A
X
X
X
L
H
L
H
L
H
L
H
X: Don’t care
System diagram
Outputs
Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
LLLLLLLL
LLLLLLLL
LLLLLLLL
HL L L L L L L
LHL L L L L L
L LHL L L L L
L L LHL L L L
L L L LHL L L
L L L L LHL L
L L L L L LHL
L L L L L L LH
Selected
Output
None
None
None
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
2 2007-10-01







No Preview Available !

TC74HC238AF Даташит, Описание, Даташиты
Absolute Maximum Ratings (Note 1)
TC74HC238AP/AF
Characteristics
Symbol
Rating
Unit
Supply voltage range
DC input voltage
DC output voltage
Input diode current
Output diode current
DC output current
DC VCC/ground current
Power dissipation
Storage temperature
VCC
VIN
VOUT
IIK
IOK
IOUT
ICC
PD
Tstg
0.5~7
0.5~VCC + 0.5
0.5~VCC + 0.5
±20
±20
±25
±50
500 (DIP) (Note 2)/180 (SOP)
65~150
V
V
V
mA
mA
mA
mA
mW
°C
Note 1:
Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or
even destruction.
Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the
significant change in temperature, etc.) may cause this product to decrease in the reliability significantly
even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute
maximum ratings and the operating ranges.
Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook
(“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test
report and estimated failure rate, etc).
Note 2: 500 mW in the range of Ta = −40°C~65°C. From Ta = 65°C to 85°C a derating factor of 10 mW/°C shall be
applied until 300 mW.
Operating Ranges (Note)
Characteristics
Symbol
Rating
Unit
Supply voltage
Input voltage
Output voltage
Operating temperature
Input rise and fall time
VCC
VIN
VOUT
Topr
tr, tf
2~6
0~VCC
0~VCC
40~85
0~1000 (VCC = 2.0 V)
0~500 (VCC = 4.5 V)
0~400 (VCC = 6.0 V)
V
V
V
°C
ns
Note: The operating ranges must be maintained to ensure the normal operation of the device.
Unused inputs must be tied to either VCC or GND.
3 2007-10-01










Всего страниц 8 Pages
Скачать PDF[ TC74HC238AF.PDF Даташит ]

Ссылка Поделиться


Related Datasheets

Номер в каталогеОписаниеПроизводители
TC74HC238AF3-to-8 Line DecoderToshiba
Toshiba
TC74HC238AP3-to-8 Line DecoderToshiba
Toshiba

Номер в каталоге Описание Производители
6MBP200RA-060

Intelligent Power Module

Fuji Electric
Fuji Electric
ADF41020

18 GHz Microwave PLL Synthesizer

Analog Devices
Analog Devices
AN-SY6280

Low Loss Power Distribution Switch

Silergy
Silergy

DataSheet26.com    |    2019    |   Контакты    |    Поиск