HITACHI HD74ALVCH162373

HD74ALVCH162373
16-bit Transparent D-type Latches with 3-state Outputs
ADE-205-179 (Z)
Preliminary
1st. Edition
December 1996
Description
The HD74ALVCH162373 is particularly suitable for implementing buffer registers, I/O ports, bidirectional
bus drivers, and working registers. It can be used as two 8-bit latches or one 16-bit latch. When the latch
enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is taken low, the Q outputs
are latched at the levels set up at the D inputs. Active bus hold circuitry is provided to hold unused or
floating data inputs at a valid logic level. All outputs, which are designed to sink up to 12 mA, include 26
Ω resistors to reduce overshoot and undershoot.
Features
• 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)
• Bus hold on data inputs eliminates the need for external pullup / pulldown resistors
• All outputs have equivalent 26 Ω series resistors, so no external resistors are required.
HD74ALVCH162373
Function Table
Inputs
Output Q
OE
LE
D
L
H
H
H
L
H
L
L
L
L
X
Q0 *1
H
X
X
Z
H : High level
L : Low level
X : Immaterial
Z : High impedance
Note: 1. Output level before the indicated steady state input conditions were established.
2
HD74ALVCH162373
Pin Arrangement
1OE 1
48 1LE
1Q1 2
47 1D1
1Q2 3
46 1D2
GND 4
45 GND
1Q3 5
44 1D3
1Q4 6
V CC 7
43 1D4
1Q5 8
41 1D5
1Q6 9
40 1D6
GND 10
39 GND
1Q7 11
38 1D7
1Q8 12
37 1D8
2Q1 13
36 2D1
2Q2 14
35 2D2
GND 15
34 GND
2Q3 16
33 2D3
2Q4 17
32 2D4
V CC 18
31 VCC
2Q5 19
30 2D5
2Q6 20
29 2D6
GND 21
28 GND
2Q7 22
27 2D7
2Q8 23
26 2D8
2OE 24
25 2LE
42 VCC
(Top view)
3
HD74ALVCH162373
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
TSSOP
Supply voltage
Input voltage
*1
Output voltage
*1, 2
Conditions
±100
Maximum power dissipation
at Ta = 55°C (in still air) *3
PT
0.85
W
Storage temperature
Tstg
–65 to 150
°C
Notes:
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 conditions” is not
implied. Exposure to absolute maximum rated conditions for extended periods may affect device
reliability.
1. The input and output negative voltage ratings may be exceeded if the input and output clamp
current ratings are observed.
2. This value is limited to 4.6 V maximum.
3. The maximum package power dissipation is calculated using a junction temperature of 150°C
and a 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
—
–6
mA
—
–8
VCC = 2.7 V
—
–12
VCC = 3.0 V
—
6
—
8
VCC = 2.7 V
—
12
VCC = 3.0 V
Low level output current
I OL
mA
Input transition rise or fall rate
∆t / ∆v
0
10
ns / V
Operating temperature
Ta
–40
85
°C
Note: Unused control inputs must be held high or low to prevent them from floating.
4
Conditions
VCC = 2.3 V
VCC = 2.3 V
HD74ALVCH162373
Logic Diagram
1
1OE
48
1LE
C1
47
1D1
2
1D
1Q1
To seven other channels
24
2OE
25
2LE
C1
36
2D1
1D
13
2Q1
To seven other channels
5
HD74ALVCH162373
Electrical Characteristics (Ta = –40 to 85°C)
Item
Symbol VCC (V) *1
Input voltage
VIH
VIL
Output voltage
VOH
Min
Max
Unit Test Conditions
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
1.9
—
I OH = –4 mA, VIH = 1.7 V
2.3
1.7
—
I OH = –6 mA, VIH = 1.7 V
3.0
2.4
—
I OH = –6 mA, VIH = 2.0 V
2.7
2.0
—
I OH = –8 mA, VIH = 2.0 V
3.0
2.0
—
I OH = –12 mA, VIH = 2.0 V
Min to Max —
0.2
I OL = 100 µA
2.3
—
0.4
I OL = 4 mA, VIL = 0.7 V
2.3
—
0.55
I OL = 6 mA, VIL = 0.7 V
3.0
—
0.55
I OL = 6 mA, VIL = 0.8 V
2.7
—
0.6
I OL = 8 mA, VIL = 0.8 V
3.0
—
0.8
I OL = 12 mA, VIL = 0.8 V
I IN
3.6
—
±5
I IN (hold)
2.3
45
—
VIN = 0.7 V
2.3
–45
—
VIN = 1.7 V
3.0
75
—
VIN = 0.8 V
3.0
–75
—
VIN = 2.0 V
3.6
—
±500
VIN = 0 to 3.6 V
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
VIN = one input at (VCC–0.6) V,
other inputs at V CC or GND
VOL
Input current
Off state output current
*2
∆I CC
V
I OH = –100 µA
Min to Max VCC–0.2
µA
VIN = VCC or GND
Notes: 1. For conditions shown as Min or Max, use the appropriate values under recommended operating
conditions.
2. For I/O ports, the parameter I OZ includes the input leakage current.
6
HD74ALVCH162373
Switching Characteristics (Ta = –40 to 85°C)
Item
Symbol VCC (V)
Min
Typ
Max
Unit
FROM
(Input)
TO
(Output)
Propagation delay time
t PLH
2.5±0.2
1.0
—
5.6
ns
D
Q
t PHL
2.7
—
—
5.0
3.3±0.3
1.1
—
4.2
2.5±0.2
1.0
—
6.0
LE
Q
2.7
—
—
5.3
3.3±0.3
1.0
—
4.5
t ZH
2.5±0.2
1.0
—
7.0
ns
OE
Q
t ZL
2.7
—
—
6.4
3.3±0.3
1.0
—
5.3
t HZ
2.5±0.2
1.9
—
5.8
ns
OE
Q
t LZ
2.7
—
—
5.0
3.3±0.3
1.4
—
4.6
2.5±0.2
1.0
—
—
2.7
1.0
—
—
3.3±0.3
1.1
—
—
2.5±0.2
1.5
—
—
2.7
1.7
—
—
3.3±0.3
1.4
—
—
2.5±0.2
3.3
—
—
2.7
3.3
—
—
3.3±0.3
3.3
—
—
3.3
—
3.0
—
3.3
—
6.0
—
3.3
—
7.0
—
Output enable time
Output disable time
Setup time
Hold time
Pulse width
Input capacitance
Output capacitance
t su
th
tw
CIN
CO
ns
ns
ns
pF
Control inputs
Data inputs
pF
7
HD74ALVCH162373
• Test Circuit
See under table
500 Ω
S1
OPEN
GND
*1
C L = 50 pF
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
Vcc=2.5±0.2V
Vcc=2.7V,
3.3±0.3V
OPEN
OPEN
GND
GND
4.6 V
6.0 V
Note: 1. C L includes probe and jig capacitance.
8
HD74ALVCH162373
• Waveforms – 1
tf
tr
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
9
HD74ALVCH162373
• Waveforms – 3
Output
Control
tf
tr
VIH
90 %
90 %
Vref
Vref
10 %
t ZL
10 %
GND
t LZ
≈VOH1
Vref
Waveform - A
t ZH
Waveform - B
VOL + 0.3 V
t HZ
VOH – 0.3 V
Vref
VOL
VOH
≈VOL1
TEST
VIH
Vref
VOH1
VOL1
Vcc=2.5±0.2V
Vcc=2.7V,
3.3±0.3V
2.3 V
2.7 V
1.2 V
2.3 V
1.5 V
3.0 V
GND
GND
Notes: 1. All input pulses are supplied by generators having the following characteristics:
PRR ≤ 10 MHz, Zo = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns.
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.
10
HD74ALVCH162373
Package Dimensions
Unit : mm
+0.3
12.50 –0.1
25
6.10 +0.3
–0.1
48
0.15 ± 0.05
24
0.08 M
0.65 Max
0.10
8.10 ± 0.3
10° Max
1.20 max
0.20 +0.1
–0.05
0.50
0.05 Min
1
0.50 ± 0.1
Hitachi Code
JEDEC Code
EIAJ Code
TTP-48DC
—
—
11
Cautions
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received the latest product standards or specifications before final design, purchase or use.
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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
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