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74VHC244BQ,115

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
74VHC_VHCT244_1 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 01 — 17 August 2009 3 of 16
NXP Semiconductors
74VHC244; 74VHCT244
Octal buffer/line driver; 3-state
5. Pinning information
5.1 Pinning
5.2 Pin description
(1) The die substrate is attached to this pad using
conductive die attach material. It can not be used as a
supply pin or input.
Fig 4. Pin configuration SO20, TSSOP20 Fig 5. Pin configuration DHVQFN20
74VHC244
74VHCT244
1OE V
CC
1A0 2OE
2Y0 1Y0
1A1 2A0
2Y1 1Y1
1A2 2A1
2Y2 1Y2
1A3 2A2
2Y3 1Y3
GND 2A3
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1
2
3
4
5
6
7
8
9
10
12
11
14
13
16
15
18
17
20
19
001aak058
74VHC244
74VHCT244
Transparent top view
1Y3
GND
(1)
1A3
2Y3
2A2
2Y2 1Y2
1A2 2A1
2Y1 1Y1
1A1 2A0
2Y0 1Y0
1A0 2OE
GND
2A3
1OE
V
CC
9
12
8 13
7 14
6 15
5 16
4 17
3 18
2 19
10
11
1
20
terminal 1
index area
Table 2. Pin description
Symbol Pin Description
1
OE 1 output enable input (active LOW)
1A[0:3] 2, 4, 6, 8 data input
2A[0:3] 17, 15, 13, 11 data input
1Y[0:3] 18, 16, 14, 12 data output
2Y[0:3] 3, 5, 7, 9 data output
GND 10 ground (0 V)
2
OE 19 output enable input (active LOW)
V
CC
20 supply voltage
74VHC_VHCT244_1 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 01 — 17 August 2009 4 of 16
NXP Semiconductors
74VHC244; 74VHCT244
Octal buffer/line driver; 3-state
6. Functional description
[1] H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
Z = high-impedance OFF-state.
7. Limiting values
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] P
tot
derates linearly with 8 mW/K above 70 °C.
[3] P
tot
derates linearly with 5.5 mW/K above 60 °C.
[4] P
tot
derates linearly with 4.5 mW/K above 60 °C.
Table 3. Function table
[1]
Control Input Output
nOE nAn nYn
LLL
HH
HXZ
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions Min Max Unit
V
CC
supply voltage −0.5 +7.0 V
V
I
input voltage −0.5 +7.0 V
I
IK
input clamping current V
I
< −0.5 V
[1]
−20 - mA
I
OK
output clamping current V
O
< −0.5 V or V
O
>V
CC
+ 0.5 V
[1]
- ±20 mA
I
O
output current V
O
= −0.5 V to (V
CC
+ 0.5 V) - ±25 mA
I
CC
supply current - 75 mA
I
GND
ground current −75 - mA
T
stg
storage temperature −65 +150 °C
P
tot
total power dissipation T
amb
= −40 °C to +125 °C
SO20 package
[2]
- 500 mW
TSSOP20 package
[3]
- 500 mW
DHVQFN20 package
[4]
- 500 mW
74VHC_VHCT244_1 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 01 — 17 August 2009 5 of 16
NXP Semiconductors
74VHC244; 74VHCT244
Octal buffer/line driver; 3-state
8. Recommended operating conditions
9. Static characteristics
Table 5. Recommended operating conditions
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 74VHC244 74VHCT244 Unit
Min Typ Max Min Typ Max
V
CC
supply voltage 2.0 5.0 5.5 4.5 5.0 5.5 V
V
I
input voltage 0 - 5.5 0 - 5.5 V
V
O
output voltage 0 - V
CC
0- V
CC
V
T
amb
ambient temperature −40 +25 +125 −40 +25 +125 °C
∆t/∆V input transition rise
and fall rate
V
CC
= 3.3 V ± 0.3 V - - 100 - - - ns/V
V
CC
= 5.0 V ± 0.5 V - - 20 - - 20 ns/V
Table 6. Static characteristics
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 °C −40 °C to +85 °C −40 °C to +125 °C Unit
Min Typ Max Min Max Min Max
For type 74VHC244
V
IH
HIGH-level
input voltage
V
CC
= 2.0 V 1.5 - - 1.5 - 1.5 - V
V
CC
= 3.0 V 2.1 - - 2.1 - 2.1 - V
V
CC
= 5.5 V 3.85 - - 3.85 - 3.85 - V
V
IL
LOW-level
input voltage
V
CC
= 2.0 V - - 0.5 - 0.5 - 0.5 V
V
CC
= 3.0 V - - 0.9 - 0.9 - 0.9 V
V
CC
= 5.5 V - - 1.65 - 1.65 - 1.65 V
V
OH
HIGH-level
output voltage
V
I
= V
IH
or V
IL
I
O
= −50 µA; V
CC
= 2.0 V 1.9 2.0 - 1.9 - 1.9 - V
I
O
= −50 µA; V
CC
= 3.0 V 2.9 3.0 - 2.9 - 2.9 - V
I
O
= −50 µA; V
CC
= 4.5 V 4.4 4.5 - 4.4 - 4.4 - V
I
O
= −4.0 mA; V
CC
= 3.0 V 2.58 - - 2.48 - 2.40 - V
I
O
= −8.0 mA; V
CC
= 4.5 V 3.94 - - 3.8 - 3.70 - V
V
OL
LOW-level
output voltage
V
I
= V
IH
or V
IL
I
O
= 50 µA; V
CC
= 2.0 V - 0 0.1 - 0.1 - 0.1 V
I
O
= 50 µA; V
CC
= 3.0 V - 0 0.1 - 0.1 - 0.1 V
I
O
= 50 µA; V
CC
= 4.5 V - 0 0.1 - 0.1 - 0.1 V
I
O
= 4.0 mA; V
CC
= 3.0 V - - 0.36 - 0.44 - 0.55 V
I
O
= 8.0 mA; V
CC
= 4.5 V - - 0.36 - 0.44 - 0.55 V
I
OZ
OFF-state
output current
V
I
=V
IH
or V
IL
;
V
O
=V
CC
or GND;
V
CC
= 5.5 V
--±0.25 - ±2.5 - ±10.0 µA
I
I
input leakage
current
V
I
= 5.5 V or GND;
V
CC
= 0 V to 5.5 V
- - 0.1 - 1.0 - 2.0 µA
I
CC
supply current V
I
=V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
- - 4.0 - 40 - 80 µA
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

74VHC244BQ,115

Mfr. #:
Buy 74VHC244BQ,115
Manufacturer:
Nexperia
Description:
Buffers & Line Drivers CMOS 8CH NON-INVERT
Lifecycle:
New from this manufacturer.
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