HITACHI HD74ALVC16834

HD74ALVC16834
18-bit Universal Bus Driver with 3-state Outputs
and Inverted Latch Enable
ADE-205-216D (Z)
5th. Edition
December 1999
Description
The HD74ALVC16834 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 output enable (OE). The device operates in the transparent mode
when the latch enable (LE) input is low. The A data is latched if the clock (CLK) input is held at a high or
low logic level. If LE is high, the A data is stored in the latch/flip flop on the low to high transition of the
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 V CC through a
pullup registor; the minimum value of the registor is determined by the current sinking capability of the
driver.
Features
• Meets “PC SDRAM registered DIMM design support document, Rev. 1.2”
• 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 (@V CC = 3.0 V)
HD74ALVC16834
Function Table
Inputs
OE
LE
CLK
A
Output Y
H
X
X
X
Z
L
L
X
L
L
L
L
X
H
H
L
H
↑
L
L
L
H
↑
H
H
L
H
H
X
Y0 *1
L
H
L
X
Y0 *2
H:
L:
X:
Z:
↑:
Notes:
2
High level
Low level
Immaterial
High impedance
Low to high transition
1. Output level before the indicated steady-state input conditions were established, provided that
CLK was high before LE went low.
2. Output level before the indicated steady-state input conditions were established.
HD74ALVC16834
Pin Arrangement
NC 1
56 GND
NC 2
55 NC
Y1 3
54 A1
53 GND
GND 4
Y2 5
52 A2
Y3 6
51 A3
50 VCC
VCC 7
Y4 8
49 A4
Y5 9
48 A5
Y6 10
47 A6
46 GND
GND 11
Y7 12
45 A7
Y8 13
44 A8
Y9 14
43 A9
Y10 15
42 A10
Y11 16
41 A11
Y12 17
40 A12
GND 18
39 GND
Y13 19
38 A13
Y14 20
37 A14
Y15 21
36 A15
VCC 22
35 VCC
Y16 23
34 A16
Y17 24
33 A17
GND 25
32 GND
Y18 26
31 A18
OE 27
30 CLK
LE 28
29 GND
(Top view)
3
HD74ALVC16834
Absolute Maximum Ratings
Item
Symbol
Ratings
Unit
VCC
–0.5 to 4.6
V
VI
–0.5 to 4.6
V
VO
–0.5 to VCC+0.5
V
Input clamp current
I IK
–50
mA
VI < 0
Output clamp current
I OK
±50
mA
VO < 0 or VO > VCC
Continuous output current
IO
±50
mA
VO = 0 to VCC
VCC, GND current / pin
I CC or IGND
±100
mA
Maximum power dissipation
at Ta = 55°C (in still air) *3
PT
1
W
Storage temperature range
Tstg
–65 to 150
°C
Supply voltage range
Input voltage range
*1
Output voltage range
*1, 2
Conditions
TSSOP
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.
Recommended Operating Conditions
Item
Symbol
Min
Max
Unit
Supply voltage
VCC
2.3
3.6
V
Input voltage
VI
0
VCC
V
Output voltage
VO
0
VCC
V
High-level output current
I OH
—
–12
mA
—
–12
VCC = 2.7 V
—
–24
VCC = 3.0 V
—
12
—
12
VCC = 2.7 V
—
24
VCC = 3.0 V
Low-level output current
I OL
mA
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.
4
Conditions
VCC = 2.3 V
VCC = 2.3 V
HD74ALVC16834
Logic Diagram
OE
CLK
LE
A1
27
30
28
54
1D
C1
CLK
3
Y1
To seventeen other channels
5
HD74ALVC16834
Electrical Characteristics
Ta = –40 to 85°C
Item
Symbol VCC (V)
Min
Max
Unit Test Conditions
Input voltage
VIH
2.3 to 2.7
1.7
—
V
2.7 to 3.6
2.0
—
2.3 to 2.7
—
0.7
2.7 to 3.6
—
0.8
2.3 to 3.6
VCC–0.2
—
2.3
2.0
—
I OH = –6 mA, VIH = 1.7 V
2.3
1.7
—
I OH = –12 mA, VIH = 1.7 V
2.7
2.2
—
I OH = –12 mA, VIH = 2.0 V
3.0
2.4
—
I OH = –12 mA, VIH = 2.0 V
3.0
2.0
—
I OH = –24 mA, VIH = 2.0 V
2.3 to 3.6
—
0.2
2.3
—
0.4
I OL = 6 mA, VIL = 0.7 V
2.3
—
0.7
I OL = 12 mA, VIL = 0.7 V
2.7
—
0.4
I OL = 12 mA, VIL = 0.8 V
3.0
—
0.55
I OL = 24 mA, VIL = 0.8 V
VIL
Output voltage
VOH
VOL
V
V
V
I OH = –100 µA
I OL = 100 µA
Input current
I IN
3.6
—
±5.0
µA
VIN = VCC or GND
Off state output current
I OZ
3.6
—
±10
µA
VOUT = VCC or GND
Quiescent supply current I CC
3.6
—
40
µA
VIN = VCC or GND
3.0 to 3.6
—
750
µA
One input at (V CC–0.6)V,
other inputs at V CC or GND
∆I CC
6
HD74ALVC16834
Switching Characteristics (Ta = –40 to 85°C)
Item
Symbol VCC (V)
Min
Typ
Max
Unit
Maximum clock
f max
2.5±0.2
150
—
—
MHz
2.7
150
—
—
3.3±0.3
150
—
—
t PLH
2.5±0.2
1.0
—
4.2
t PHL
2.7
—
—
4.2
3.3±0.3
1.0
—
3.6
2.5±0.2
1.4
—
5.8
2.7
—
—
5.5
3.3±0.3
1.5
—
4.7
2.5±0.2
1.4
—
5.5
2.7
—
—
5.2
3.3±0.3
1.5
—
4.5
t ZH
2.5±0.2
1.4
—
5.5
t ZL
2.7
—
—
5.6
3.3±0.3
1.5
—
4.6
t HZ
2.5±0.2
1.0
—
4.0
t LZ
2.7
—
—
4.3
3.3±0.3
1.8
—
3.9
3.3
3.0
4.5
7.0
3.3
3.0
6.0
9.0
3.3
3.0
7.0
9.0
frequency
Propagation delay time
Output enable time
Output disable time
Input capacitance
Output capacitance
CIN
CO
ns
From (Input) To (Output)
A
Y
LE
Y
CLK
Y
ns
OE
Y
ns
OE
Y
pF
Control inputs
Data inputs
pF
Y ports
7
HD74ALVC16834
Switching Characteristics (Ta = –40 to 85°C) (cont)
Item
Symbol VCC (V)
Setup time
t su
Hold time
th
Pulse width
tw
Min
Typ
Max
Unit
From (Input)
2.5±0.2
2.1
—
—
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
—
—
2.7
0.6
—
—
3.3±0.3
0.7
—
—
2.5±0.2
0.8
—
—
Data after LE↑
2.7
0.8
—
—
CLK “H” or “L”
3.3±0.3
0.9
—
—
2.5±0.2
3.3
—
—
2.7
3.3
—
—
3.3±0.3
3.3
—
—
2.5±0.2
3.3
—
—
2.7
3.3
—
—
3.3±0.3
3.3
—
—
ns
Data after CLK↑
LE “L”
ns
CLK “H” or “L”
Switching Characteristics (Ta = 0 to 85°C)
Item
Symbol VCC (V)
*1
Propagation
CL=0pF
delay time
CL=50pF
CL=0pF
Typ
Max
Unit
FROM
(Input)
TO
(Output)
t PLH , t PHL 3.3±0.165 0.9
—
2.0
ns
A
Y
3.3±0.165 1.0
—
4.5
3.3±0.165 1.5
—
3.0
CLK
Y
3.3±0.165 1.7
—
4.5
3.3±0.165 1.7
—
4.8
CLK, A
Y
3.3±0.165 1.0
—
2.5
*1
CL=50pF
Output rise /
fall time
*1, 2
CL=50pF
t SSO
CL=50pF
t TLH, tTHL
Min
*1
Notes: 1. This parameter is characterized but not tested.
2. t SSO : Simultaneous switching output time.
8
volts/
ns
Y
HD74ALVC16834
Operating Characteristics (Ta = 25°C)
Item
Symbol
VCC = 2.5±0.2 V
VCC = 3.3±0.3 V
Typ
Typ
Power dissipation Outputs enable Cpd
22.0
24.5
capacitance
5.0
6.0
Outputs disable
Unit Test Conditions
pF
CL = 0, f = 10 MHz
Test Circuit
See under table
500 Ω
S1
OPEN
GND
*1
CL
500 Ω
Load Circuit for Outputs
Symbol
t PLH / t PHL
t su / t h / t w
t ZH/ t HZ
t ZL / t LZ
CL
Note:
1.
Vcc=2.5±0.2V
Vcc=2.7V,
3.3±0.3V
OPEN
OPEN
GND
GND
2 × VCC
30 pF
6.0 V
50 pF
CL includes probe and jig capacitance.
9
HD74ALVC16834
Waveforms – 1
tr
tf
90 %
Input
VIH
90 %
Vref
Vref
10 %
10 %
GND
t PHL
t PLH
VOH
Output
Vref
Vref
VOL
Waveforms – 2
tr
VIH
90 %
Vref
Timing Input
10 %
tsu
GND
th
VIH
Data Input
Vref
Vref
GND
tw
VIH
Input
Vref
Vref
GND
10
HD74ALVC16834
Waveforms – 3
tf
tr
Output
Control
VIH
90 %
90 %
Vref
Vref
10 %
t ZL
10 %
GND
t LZ
≈VOH1
Vref
Waveform - A
t ZH
Waveform - B
Vref1
VOL
t HZ
VOH
Vref2
Vref
≈VOL1
TEST
VIH
Vref
Vref1
Vref2
VOH1
VOL1
Notes:
1.
2.
3.
4.
Vcc=2.5±0.2V
Vcc=2.7V,
3.3±0.3V
VCC
2.7 V
1/2 VCC
1.5 V
VOL +0.15 V VOL +0.3 V
VOH–0.15 V VOH–0.3 V
VCC
3.0 V
GND
GND
All input pulses are supplied by generators having the following characteristics :
PRR ≤ 10 MHz, Zo = 50 Ω, t r ≤ 2.0 ns, tf ≤ 2.0 ns. (VCC = 2.5±0.2 V)
PRR ≤ 10 MHz, Zo = 50 Ω, t r ≤ 2.5 ns, tf ≤ 2.5 ns. (VCC = 2.7 V, 3.3±0.3 V)
Waveform–A is for an output with internal conditions such that the output is low except when
disabled by the output control.
Waveform–B is for an output with internal conditions such that the output is high except
when disabled by the output control.
The outputs are measured one at a time with one transition per measurement.
11
HD74ALVC16834
IV Characteristics for Register Output (Measured value)
Weak condition HIGH
Vcc = 3.15 V, Ta = 85°C
VOH (V)
0.0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
2.5
3.0
3.5
I OH (mA)
-20
-40
-60
-80
-100
Strong condition HIGH
Vcc = 3.45 V, Ta = 0°C
VOH (V)
0.0
0
I OH (mA)
-30
-60
-90
-120
-150
12
0.5
1.0
1.5
2.0
HD74ALVC16834
Weak condition LOW
Vcc = 3.15 V, Ta = 85°C
120
100
I OL (mA)
80
60
40
20
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
2.5
3.0
3.5
VOL (V)
Strong condition LOW
Vcc = 3.45 V, Ta = 0°C
200
I OL (mA)
150
100
50
0
0.0
0.5
1.0
1.5
2.0
VOL (V)
13
HD74ALVC16834
Package Dimensions
Unit : mm
+0.3
14.00 –0.1
29
6.10 +0.3
–0.1
56
0.20 +0.1
–0.05
0.50
28
0.08 M
0.15 ± 0.05
1
1.20 max
0.10
0.05 Min
0.40 Max
8.10 ± 0.3
10° Max
0.50 ± 0.1
Hitachi code
EIAJ code
JEDEC code
14
TTP-56D
—
—
HD74ALVC16834
Cautions
1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent,
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.
6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without
written approval from Hitachi.
7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor
products.
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Copyright ' Hitachi, Ltd., 1999. All rights reserved. Printed in Japan.
15