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HD74HCT244P Ver la hoja de datos (PDF) - Renesas Electronics

Número de piezacomponentes DescripciónFabricante
HD74HCT244P Octal Buffers/Line Drivers/Line Receivers (with inverted 3-state outputs) Renesas
Renesas Electronics Renesas
HD74HCT244P Datasheet PDF : 7 Pages
1 2 3 4 5 6 7
HD74HCT244
Recommended Operating Conditions
Item
Symbol
Ratings
Supply voltage
VCC
4.5 to 5.5
Input / Output voltage
VIN, VOUT
0 to VCC
Operating temperature
Input rise / fall time*1
Ta
–40 to 85
tr, tf
0 to 500
Notes: 1. This item guarantees maximum limit when one input switches.
Waveform: Refer to test circuit of switching characteristics.
Unit
Conditions
V
V
°C
ns
VCC = 4.5 V
Electrical Characteristics
Item
Input voltage
Output voltage
Off-state output
current
Input current
Quiescent current
Symbol VCC (V)
VIH 4.5 to 5.5
VIL 4.5 to 5.5
VOH
4.5
4.5
VOL
4.5
4.5
IOZ
5.5
Iin
5.5
ICC
5.5
Ta = 25°C
Min Typ Max
2.0 — —
— — 0.8
4.4 — —
4.18 — —
— — 0.1
— — 0.26
— — ±0.5
— — ±0.1
— — 4.0
Ta = –40 to+85°C
Min Max
2.0
0.8
4.4
4.13
0.1
0.33
±5.0
±1.0
40
Unit
V
V
V
V
µA
µA
µA
Test Conditions
Vin = VIH or VIL IOH = –20 µA
IOH = –6 mA
Vin = VIH or VIL IOL = 20 µA
IOL = 6 mA
Vin = VIH or VIL,
Vout = VCC or GND
Vin = VCC or GND
Vin = VCC or GND, Iout = 0 µA
Switching Characteristics
Item
Propagation delay time
Output enable time
Output disable time
Output rise/fall time
Input capacitance
Symbol VCC (V)
tPHL
4.5
tPLH
4.5
tZL
4.5
tZH
4.5
tLZ
4.5
tHZ
4.5
tTLH / tTHL 4.5
Cin
Ta = 25°C
Ta = –40 to +85°C
Min Typ Max Min Max
— 11 20
25
— 9 20
25
— 13 30
38
— 12 30
38
— 14 30
38
— 17 30
38
— 4 12
15
— 5 10
10
(CL = 50 pF, Input tr = tf = 6 ns)
Unit
Test Conditions
ns
ns
ns
ns
pF
Test Circuit
VCC
VCC
Input
Pulse Generator
Zout = 50
1G, 2G
Output
1Y1 to 2Y4
1A1 to 2A4
Note : 1. CL includes probe and jig capacitance.
1 k S1
CL =
50 pF
OPEN
GND
VCC
TEST
tPLH / t PHL
tZH/ t HZ
tZL / t LZ
S1
OPEN
GND
VCC
Rev.2.00 Mar 30, 2006 page 3 of 6
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