HIT HD74LVCZ16245A Datasheet

HD74LVCZ16245A

16–bit Bidirectional Transceivers with 3–state Outputs

ADE-205-233 (Z)

1st. Edition

February 1999

Description

The HD74LVCZ16245A has sixteen two direction buffers, for the fittest at two direction bus lines with
three state outputs in a 48 pin package. When (DIR) is high, data flows from the A inputs to the B outputs,
and when (DIR) is low, data flows from the B inputs to the A outputs. A and B bus are separated by
making enable input (G) high level.

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 inputs / outputs V

• 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)

(Max) = 5.5 V (@VCC = 0 V or output off state)

I/O

HD74LVCZ16245A

Function Table

Inputs Operation
G DIR

L L B data to A bus
L H A data to B bus
HXZ

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

2

Pin Arrangement

1DIR

1B1
1B2

GND

1B3
1B4

V

CC

1B5
1B6

GND

1B7
1B8

2B1
2B2

GND

2B3
2B4
V

CC

2B5
2B6

GND

2B7
2B8

2DIR

10
11

12
13
14
15
16
17
18

19

20
21
22
23
24

HD74LVCZ16245A

1G

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

1A5
1A6

GND
1A7

1A8
2A1

2A2
GND
2A3

2A4
V

CC

2A5
2A6

GND
2A7

2A8
2G

(Top view)

3

HD74LVCZ16245A

Absolute Maximum Ratings

Item Symbol Ratings Unit Conditions

Supply voltage V
Input voltage V
Input / output voltage V

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

CC

I

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
Input / output voltage V

Output current I

OH

I

OL

Input rise / fall time tr, t

CC

I

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