HIT HD74LVC16373A Datasheet

HD74LVC16373A

16-bit D-type Transparent Latches with 3-state Outputs

ADE-205-121B(Z)

3rd Edition

December 1996

Description

The HD74LVC16373A has sixteen D type latches with three state outputs in a 48 pin package. When the
latch enable input is high, the Q outputs will follow the D inputs. When the latch enable goes low, data at
the D inputs will be retained at the outputs until latch enable returns high again. When a high logic level is
applied to the output control input (1G, 2G), all outputs go to a high impedance state, regardless of what
signals are present at the other inputs and the state of the storage elements. Low voltage and high speed
operation is suitable at the battery drive product (note type personal computer) and low power consumption
extends the life of a battery for long time operation.

Features

• VCC = 2.0 V to 5.5 V

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

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

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

OUT

Function Table

Inputs

G LE D Output Q

HXXZ
LHLL
LHHH
LLXQ

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

: Level of Q before the indicated steady input conditions were established.

0

0

HD74LVC16373A

Pin Arrangement

1G

1Q1
1Q2

GND

1Q3
1Q4

V

CC

1Q5
1Q6

GND

1Q7
1Q8

2Q1
2Q2

GND

2Q3
2Q4
V

CC

2Q5
2Q6

GND

2Q7
2Q8

2G

10
11
12
13
14
15
16
17
18

19

20
21
22
23
24

1LE

1
2

3
4
5

6
7

8

9

G
Q

D

G
Q

D

G
Q

D

G
Q

D

G
Q

D

G
Q

D

G
Q

D

G
Q

D

G
Q

D

G
Q

D

G
Q

D

G
Q

D

G
Q

D

G
Q

D

G
Q

D

G
Q

D

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

1D1
1D2
GND
1D3
1D4

V

CC

1D5
1D6

GND
1D7

1D8
2D1

2D2
GND
2D3

2D4
V

CC

2D5
2D6

GND
2D7

2D8
2LE

(Top view)

2

HD74LVC16373A

Absolute Maximum Ratings

Item Symbol Ratings Unit Conditions

Supply voltage V
Input diode current I
Input voltage V
Output diode current I

Output voltage V

Output current I
VCC, GND current / pin ICC or I

CC

IK

I

OK

O

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 Conditons

–0.5 to 6.0 V
–50 mA VI = –0.5 V
–0.5 to 6.0 V
–50 mA VO = –0.5 V
50 mA VO = VCC+0.5 V
–0.5 to VCC +0.5 V Output "H" or "L"
–0.5 to 6.0 V Output "Z" or VCC:OFF
±50 mA
100 mA

Item Symbol Ratings Unit Conditions

Supply voltage V

CC

1.5 to 5.5 V Data hold

2.0 to 5.5 V At operation

Input / output voltage V

I

V

O

0 to 5.5 V G, LE, D
0 to V

CC

V Output "H" or "L"

0 to 5.5 V Output "Z" or VCC:OFF
Operating temperature Ta –40 to 85 °C
Output current I

Input rise / fall time

*1

OH

I

OL

tr, t

f

–12 mA VCC = 2.7 V

*2

–24

mA VCC = 3.0 V to 5.5 V

12 mA VCC = 2.7 V

*2

24

mA VCC = 3.0 V to 5.5 V

10 ns/V
Notes: 1. This item guarantees maximum limit when one input switches.

Waveform : Refer to test circuit of switching characteristics.

2. duty cycle ≤ 50%

3