HIT HD74LVCZ16244A Datasheet

HD74LVCZ16244A

16–bit Buffers / Line Drivers with 3–state Outputs

ADE-205-232 (Z)

1st. Edition

February 1999

Description

The HD74LVCZ16244A has sixteen line drivers with three state outputs in a 48 pin package. This device
is a non inverting buffer and has four active low enables (1G to 4G). Each enable independently controls
four buffers.

When VCC is between 0 and 1.5 V, the device is in the high impedance state during power up or power
down.

Low voltage and high speed operation is suitable at battery drive product (note type personal computer) and
low power consumption extends the life of a battery for long time operation.

Features

• VCC = 2.7 to 5.5 V

• All inputs VIH (Max) = 5.5 V (@VCC = 0 to 5.5 V)

• All outputs VO (Max) = 5.5 V (@VCC = 0 V or output off state)

• Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)

• Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C)

• High impedance state during power up and power down

• Power off disables outputs, permitting live insertion

• High output current ±24 mA (@VCC = 3.0 to 5.5 V)

HD74LVCZ16244A

Function Table

Inputs Output Y
G A

HXZ
LHH
LLL

H : High level
L : Low level
X : Immaterial
Z : High impedance

2

Pin Arrangement

1G

1Y1
1Y2

GND

1Y3
1Y4

V

CC

2Y1
2Y2

GND

2Y3
2Y4

3Y1
3Y2

GND

3Y3
3Y4
V

CC

4Y1
4Y2

GND

4Y3
4Y4

4G

10
11

12
13
14
15
16
17
18

19

20
21
22
23
24

HD74LVCZ16244A

2G

1
2

3
4
5

6
7

8

9

48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25

1A1
1A2
GND
1A3
1A4

V

CC

2A1
2A2

GND
2A3

2A4
3A1

3A2
GND
3A3

3A4
V

CC

4A1
4A2

GND
4A3

4A4
3G

(Top view)

3

HD74LVCZ16244A

Absolute Maximum Ratings

Item Symbol Ratings Unit Conditions

Supply voltage V
Input voltage V
Output voltage V

Input diode current I
Output diode current I
Output current I
VCC, GND current ICC or I

CC

I

O

IK

OK

O

GND

Storage temperature Tstg –65 to 150 °C
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

–0.5 to 7.0 V
–0.5 to 7.0 V
–0.5 to 7.0 V Output “Z” or VCC : OFF
–0.5 to VCC+0.5 Output “H” or “L”
–50 mA VI < 0
–50 mA VO < 0

±50 mA
±100 mA

Item Symbol Ratings Unit Conditions

Supply voltage V
Input voltage V
Output voltage V

Output current I

OH

I

OL

Input rise / fall time tr, t

CC

I

O

f

2.7 to 5.5 V At operation
0 to 5.5 V
0 to 5.5 V Output “Z” or VCC : OFF
0 to V

CC

Output “H” or “L”

–12 mA VCC = 2.7 V

*1

–24

VCC = 3.0 to 5.5 V

12 VCC = 2.7 V

*1

24

VCC = 3.0 to 5.5 V

0 to 6 ns / V

Operating temperature Ta –40 to +85 °C
Note: 1. Duty cycle ≤ 50%

4