Datasheet HD74ALVC162834A Datasheet (HIT)

HD74ALVC162834A

18-bit Universal Bus Driver with 3-state Outputs

and Inverted Latch Enable

ADE-205-293A (Z)

2nd. Edition

November 1999

Description

The HD74ALVC162834A is an 18-bit universal bus driver designed for 2.3 V to 3.6 V VCC operation.

Data flow from A to Y is controlled by the output enable (OE). The device operates in the transparent mode
when the latch enable (LE) is low. When LE is low, the A data is latched if the clock (CLK) input is held
at a high or low logic level. If the LE is high, the A data is stored in the latch/flip flop on the low to high
transition of CLK. When OE is high, the outputs are in the high impedance state.

To ensure the high impedance state during power up or power down, OE should be tied to VCC through a
pullup registor; the minimum value of the registor is determined by the current sinking capability of the
driver.

All outputs, which are designed to sink up to 12 mA, include series dumping resistors to reduce overshoot
and undershoot.

Features

• Supports PC133 and meets “PC SDRAM registered DIMM specification, Rev. 1.1”

• VCC = 2.3 V to 3.6 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 ±12 mA (@VCC = 3.0 V)

• All outputs have series dumping resistors, so no external resistors are required

• tpd (CLK to Y) = 3.5 ns (Max) (@VCC = 3.3±0.3 V, CL = 50 pF, Ta = 0 to 85°C)

• tpd (CLK to Y) = 2.5 ns (Max) (@VCC = 3.3±0.3 V, CL = 30 pF, Ta = 0 to 85°C)

HD74ALVC162834A

Function Table

Inputs
OE LE CLK A Output Y

HXXX Z
LLXLL
LLXHH
LH↑ LL
LH↑ HH
L H L or H X Y

H : High level
L : Low level
X : Immaterial
Z : High impedance
↑ : Low to high transition
Note: 1. Output level before the indicated steady-state input conditions were established.

*1

0

2

Pin Arrangement

HD74ALVC162834A

NC
NC

Y1

GND

Y2
Y3

V

CC

Y4
Y5
Y6

GND

Y7
Y8

Y9
Y10
Y11
Y12

GND

Y13
Y14

Y15

V

CC

Y16
Y17

GND

Y18

OE

LE

10
11

12
13
14
15
16
17
18
19

20
21
22
23
24
25
26
27
28

56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29

GND
NC
A1
GND
A2
A3

V

CC

A4
A5

A6
GND

A7
A8

A9
A10
A11

A12
GND
A13
A14
A15
V

CC

A16
A17
GND
A18
CLK
GND

1
2

3
4
5

6
7

8

9

(Top view)

3

HD74ALVC162834A

Absolute Maximum Ratings

Item Symbol Ratings Unit Conditions

Supply voltage range V
Input voltage range
Output voltage range

*1

*1, 2

Input clamp current I
Output clamp current I
Continuous output current I
VCC, GND current / pin ICC or I
Maximum power dissipation

at Ta = 55°C (in still air)

*3

CC

V

I

V

O

IK

OK

O

GND

P

T

Storage temperature range Tstg –65 to 150 °C
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the

device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under “recommended operating condition” is not implied. Exposure to absolute­maximum-rated conditions for extended periods may affect device reliability.

Notes: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp

current ratings are observed.

2. The input and output positive-voltage ratings may be exceeded up to 4.6 V if the input and output
clamp-current ratings are observed.

3. The maximum power dissipation is calculated using a junction temperature of 150°C and board
trace length of 750 mils.

–0.5 to 4.6 V
–0.5 to 4.6 V
–0.5 to VCC+0.5 V
–50 mA VI < 0

±50 mA VO < 0 or VO > V
±50 mA VO = 0 to V

CC

±100 mA
1 W TSSOP

CC

Recommended Operating Conditions

Item Symbol Min Max Unit Conditions

Supply voltage V
Input voltage V
Output voltage V
High-level output current I

Low-level output current I

CC

I

O

OH

OL

Input transition rise or fall rate ∆t/∆v 0 10 ns/V
Operating free-air temperature Ta –40 85 °C

Note: Unused or floating control pins must be held high or low.

2.3 3.6 V
0VCCV
0VCCV
—–6mAV
—–8 V

= 2.3 V

CC

= 2.7 V

CC

— –12 VCC = 3.0 V
— 6 mA VCC = 2.3 V
—8 V
—12 V

= 2.7 V

CC

= 3.0 V

CC

4

Logic Diagram

OE

CLK

LE

A1

HD74ALVC162834A

27

30

28

54

1D
C1

CLK

To seventeen other channels

3

Y1

5

HD74ALVC162834A

Electrical Characteristics

Item Symbol V

Input voltage V

Output voltage V

Input current I
Off state output current I
Quiescent supply current I

V

V

∆I

IH

IL

OH

OL

IN

OZ

CC

CC

Ta = –40 to 85°C

(V) Min Max Unit Test Conditions

CC

2.3 to 2.7 1.7 — V

2.7 to 3.6 2.0 —

2.3 to 2.7 — 0.7 V

2.7 to 3.6 — 0.8

2.3 to 3.6 VCC–0.2 — V IOH = –100 µA

2.3 1.9 — IOH = –4 mA, VIH = 1.7 V

2.3 1.7 — IOH = –6 mA, VIH = 1.7 V

3.0 2.4 — IOH = –6 mA, VIH = 2.0 V

2.7 2.0 — IOH = –8 mA, VIH = 2.0 V

3.0 2.0 — IOH = –12 mA, VIH = 2.0 V

2.3 to 3.6 — 0.2 V IOL = 100 µA

2.3 — 0.4 IOL = 4 mA, VIL = 0.7 V

2.3 — 0.55 IOL = 6 mA, VIL = 0.7 V

3.0 — 0.55 IOL = 6 mA, VIL = 0.8 V

2.7 — 0.6 IOL = 8 mA, VIL = 0.8 V

3.0 — 0.8 IOL = 12 mA, VIL = 0.8 V

3.6 — ±5.0 µAVIN = VCC or GND

3.6 — ±10 µAV

= VCC or GND

OUT

3.6 — 40 µAVIN = VCC or GND

3.0 to 3.6 — 750 µA One input at (VCC–0.6)V,
other inputs at V

or GND

CC

6

HD74ALVC162834A

Switching Characteristics (Ta = –40 to 85°C)

Item Symbol VCC (V) Min Typ Max Unit From (Input) To (Output)

Maximum clock f

max

frequency 2.7 150 — —

Propagation delay time t

Output enable time t

Output disable time t

Input capacitance C

Output capacitance C

PLH

t

PHL

ZH

t

ZL

HZ

t

LZ

IN

O

2.5±0.2 150 — — MHz

3.3±0.3 150 — —

2.5±0.2 1.0 — 5.0 ns A Y

2.7 — — 5.0

3.3±0.3 1.0 — 4.2

2.5±0.2 1.4 — 6.3 LE Y

2.7 — — 6.1

3.3±0.3 1.4 — 5.4

2.5±0.2 1.4 — 6.3 CLK Y

2.7 — — 6.1

3.3±0.3 1.4 — 5.4

2.5±0.2 1.4 — 6.3 ns OE Y

2.7 — — 6.5

3.3±0.3 1.1 — 5.5

2.5±0.2 1.0 — 4.7 ns OE Y

2.7 — — 4.9

3.3±0.3 1.3 — 4.5

3.3 3.3 4.0 4.5 pF Control inputs

3.3 3.0 6.0 9.0 Data inputs

3.3 3.0 7.0 9.0 pF Y ports

7

HD74ALVC162834A

Switching Characteristics (Ta = –40 to 85°C) (cont)

Item Symbol VCC (V) Min Typ Max Unit From (Input)

Setup time t

Hold time t

Pulse width t

su

h

w

2.5±0.2 2.2 — — ns Data before CLK↑

2.7 2.1 — —

3.3±0.3 1.7 — —

2.5±0.2 1.2 — — Data before LE↑

2.7 1.6 — — CLK “H”

3.3±0.3 1.3 — —

2.5±0.2 1.4 — — Data before LE↑

2.7 1.5 — — CLK “L”

3.3±0.3 1.2 — —

2.5±0.2 0.6 — — ns Data after CLK↑

2.7 0.6 — —

3.3±0.3 0.7 — —

2.5±0.2 1.2 — — Data after LE↑

2.7 1.1 — — CLK “H” or “L”

3.3±0.3 1.1 — —

2.5±0.2 3.3 — — ns LE “L”

2.7 3.3 — —

3.3±0.3 3.3 — —

2.5±0.2 3.3 — — CLK “H” or “L”

2.7 3.3 — —

3.3±0.3 3.3 — —

Switching Characteristics (Ta = 0 to 85°C)

Item Symbol VCC (V) Min Typ Max Unit FROM

(Input)TO(Output)

Propagation delay time C

Setup time t
Hold time t

8

=50pF t

L

CL=30pF 3.3±0.3 0.7 — 2.5 CLK Y

PLH

su

h

, t

3.3±0.3 1.4 — 3.5 ns CLK Y

PHL

3.3±0.3 1.0 — — ns Data before CLK↑

3.3±0.3 0.6 — — ns Data after CLK↑

HD74ALVC162834A

Operating Characteristics (Ta = 25°C)

Item Symbol VCC = 2.5±0.2 V VCC = 3.3±0.3 V Unit Test Conditions

Typ Typ

Power dissipation Outputs enable C
capacitance Outputs disable 5.0 6.0

pd

22.0 24.5 pF CL = 0, f = 10 MHz

9

HD74ALVC162834A

Test Circuit

See under table

500 Ω

S1

OPEN

GND

*1

L

500 ΩC

Load Circuit for Outputs

Symbol

t / t

PLH PHL

t / t / t

su h w

t / t

ZH HZ

t / t

ZL LZ

C

Vcc=2.5±0.2V

2 × V 6.0 V

L

Note: 1. CL includes probe and jig capacitance.

Vcc=2.7V,

3.3±0.3V

OPEN

GND

OPEN

GND

CC

30 pF 50 pF

10

Waveforms – 1

HD74ALVC162834A

Input

Output

Waveforms – 2

Timing Input

Data Input

10 %

t

rf

V

90 %

ref

90 %

t

V

ref

10 %

t

PLH

V

ref

t

r

t

PHL

V

ref

90 %

V

ref

10 %

t

su

V

ref

t

h

V

ref

V

IH

GND

V

OH

V

OL

V

IH

GND

V

IH

GND

Input

t

w

V

IH

V

ref

V

ref

GND

11

HD74ALVC162834A

Waveforms – 3

t

r

90 %

V

ref

t

LZ

V

ref1

t

HZ

V

ref2

CC

Vcc=2.7V,

3.3±0.3V

V +0.3 V

OL

V –0.3 V

OH

TEST

V

IH

V

ref

V

ref1

V

ref2

V

OH1

V

OL1

Vcc=2.5±0.2V

V

CC

1/2 V 1.5 V

V +0.15 V

OL

V –0.15 V

OH

V

CC

GND

Output
Control

Waveform - A

Waveform - B

90 %

t

f

V

ref

10 % 10 %

t

ZL

V

ref

t

ZH

V

ref

Notes: 1. All input pulses are supplied by generators having the following characteristics :

PRR ≤ 10 MHz, Zo = 50 Ω, tr ≤ 2.0 ns, tf ≤ 2.0 ns. (VCC = 2.5±0.2 V)
PRR ≤ 10 MHz, Zo = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns. (VCC = 2.7 V, 3.3±0.3 V)

2. Waveform – A is for an output with internal conditions such that the output is low except
when disabled by the output control.

3. Waveform – B is for an output with internal conditions such that the output is high except
when disabled by the output control.

4. The output are measured one at a time with one transition per measurement.

V

≈V

V
V

≈V

2.7 V

3.0 V
GND

IH

GND

OH1

OL

OH

OL1

12

IV Characteristics for Register Output (Measured value)

Weak condition HIGH

Vcc = 3.0 V, Ta = 85°C

V (V)

OH

0.0 0.5 1.0 1.5 2.0 2.5 3.0

0

-20

-40

OH

I (mA)

-60

-80

HD74ALVC162834A

-100

Strong condition HIGH

Vcc = 3.6 V, Ta = 0°C

V (V)

OH

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

0

-30

-60

OH

I (mA)

-90

-120

-150

13

HD74ALVC162834A

120

100

80

60

OL

I (mA)

40

20

0

0.0 0.5 1.0 1.5 2.0 2.5 3.0

Weak condition LOW

Vcc = 3.0 V, Ta = 85°C

V (V)

OL

Strong condition LOW
Vcc = 3.6 V, Ta = 0°C

150

120

90

OL

I (mA)

60

30

0

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

14

V (V)

OL

Package Dimensions

14.00

+0.3
–0.1

HD74ALVC162834A

Unit : mm

2956

+0.3

–0.1

6.10

128

+0.1

0.20

–0.05

0.50

0.08

M

0.40 Max

0.10

0.05 Min

1.20 max

8.10 ± 0.3

0.15 ± 0.05

Hitachi code

JEDEC code

EIAJ code

10° Max

0.50 ± 0.1

TTP-56D

—
—

15

HD74ALVC162834A

Cautions

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copyright, trademark, or other intellectual property rights for information contained in this document.
Hitachi bears no responsibility for problems that may arise with third party’s rights, including
intellectual property rights, in connection with use of the information contained in this document.

2. Products and product specifications may be subject to change without notice. Confirm that you have
received the latest product standards or specifications before final design, purchase or use.

3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,
contact Hitachi’s sales office before using the product in an application that demands especially high
quality and reliability or where its failure or malfunction may directly threaten human life or cause risk
of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,
traffic, safety equipment or medical equipment for life support.

4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly
for maximum rating, operating supply voltage range, heat radiation characteristics, installation
conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used
beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable
failure rates or failure modes in semiconductor devices and employ systemic measures such as fail­safes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other
consequential damage due to operation of the Hitachi product.

5. This product is not designed to be radiation resistant.

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7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor
products.

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