The 74ALVCH16373 is a low voltage CMOS 16
BIT D-TYPE LATCH with 3 STATE OUTPUTS
NONINVERTING fabricated with sub-micron
silicon gate and five-layer metal wiring C
2
MOS
technology. It is ideal for low power and very high
speed 1.65 to 3.6V applications; it can be
interfaced to 3.6V signal environment for bot h
inputs and outputs.
These 16 bit D-TYPE latches are bite controlled
by two latc h enable inputs (nLE) and tw o output
enable inputs (OE
).
While the nLE input is held at a high level, the nQ
outputs will follow the data input precisely.
When the nLE is taken low, the nQ outputs will be
in a normal logic state (high or low logic level) and
while high level the outputs will be in a high
impedance state.This device is designed to be
used with 3 state memory address drivers, etc.
Active bus-hold circuitry holds unused or und riv en
inputs at a valid logic state.
All inputsand outputs areequippedwith
protection circuits aga inst static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
1/11February 2003
Page 2
74ALVCH16373
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN NoSYMBOLNAME AND FUNCTION
11OE
2, 3,5, 6, 8,9,
11, 12
13,14,16,17,
19, 20, 22, 23
242OE
252LELatch Enable Input
36,35,33,32,
30, 29, 27, 26
47,46,44,43,
41, 40, 38, 37
481LELatch Enable Input
4, 10, 15, 21,
28, 34, 39, 45
7, 18, 31, 42V
1Q0 to 1Q7 3-State Outputs
2Q0 to 2Q7 3-State Outputs
2D0 to 2D7 Data Inputs
1D0 to 1D7 Data Inputs
GNDGround (0V)
CC
3 State Output Enable
Input (Active LOW)
3 State Output Enable
Input (Active LOW)
Positive Supply Voltage
TRUTH TABLE
INPUTSOUTPUT
OE
HXXZ
LLXNO CHANGE *
LHLL
LHH H
X : Don‘tCare
Z : High Impedance
* : Qoutputs are latched atthe time when theLEinput istakenlow
logiclevel.
LEDQ
IEC LOGIC SYMBOLS
2/11
Page 3
74ALVCH16373
LOGIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
SymbolParameterValueUnit
V
CC
V
V
V
I
IK
I
OK
I
or I
I
CC
P
T
stg
T
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
absolute maximum rating must be observed
1) I
O
2) V
<GND,VO>V
O
Supply Voltage
DC Input Voltage
I
DC Output Voltage (OFF State)
O
DC Output Voltage (High or Low State) (note 1)-0.5 to VCC+ 0.5
O
DC Input Diode Current
DC Output Diode Current (note 2)
DC Output Current
O
DC VCCor Ground Current per Supply Pin
GND
Power Dissipation
D
Storage Temperature
Lead Temperature (10 sec)
L
CC
-0.5 to +4.6V
-0.5 to +4.6V
-0.5 to +4.6V
V
-50mA
-50mA
± 50mA
± 100mA
400mW
-65 to +150°C
300°C
RECOMMENDED OPERATING CONDITIONS
SymbolParameterValueUnit
V
CC
V
V
V
I
OH,IOL
I
OH,IOL
I
OH,IOL
T
dt/dvInput Rise and Fall Time (note 1)0 to 10ns/V
1) VINfrom0.8Vto2V at VCC=3.0V
Supply Voltage
Input Voltage
I
Output Voltage (OFF State)
O
Output Voltage (High or Low State)0 to V
O
High or Low Level Output Current (VCC= 3.0 to 3.6V)
High or Low Level Output Current (VCC= 2.3 to 2.7V)
High or Low Level Output Current (VCC= 1.8V)
Operating Temperature
op
1.65 to 3.6V
-0.3 to 3.6V
0 to 3.6V
CC
± 24mA
± 12mA
± 4mA
-55 to 125°C
V
3/11
Page 4
74ALVCH16373
DC SPECIFICATIONS
Test ConditionValue
SymbolParameter
V
V
V
I
IHOLD
High Level Input
IH
Voltage
V
Low Level Input
IL
Voltage
High Level Output
OH
Voltage
Low Level Output
OL
Voltage
Input Leakage
I
I
Current
Bus Hold Input
Leakage Current
Power Off Leakage
I
off
Current
I
High Impedance
OZ
Output Leakage
Current
I
∆I
Quiescent Supply
CC
Current
CCICC
incr. per Input3.0 to 3.6VIH=VCC- 0.6V500750µA
V
CC
(V)
-40 to 85 °C-55 to 125 °C
Min.Max.Min.Max.
1.65 to 1.950.65 Vcc0.65 Vcc
2.3 to 2.71.71.7
2.7 to 3.62.02.0
1.65 to 1.950.35 Vcc0.35 Vcc
2.3 to 2.70.70.7
2.7 to 3.60.80.8
1.65 to 3.6
1.65
2.3
2.3
2.7
3.0
3.0
1.65 to 3.6
1.65
2.3
2.3
2.7
3.0
3.6
1.65
1.65
2.3
2.3
3.0
3.0
3.6
0V
3.6V
3.6VI=VCCor GND
IO=-100 µAVCC-0.2VCC-0.2
I
=-4 mA
O
=-6 mA
I
O
=-12 mA
I
O
=-12 mA
I
O
=-12 mA
I
O
=-24 mA
I
O
=100 µA
I
O
=4 mA
I
O
=6 mA
I
O
=12 mA
I
O
=12 mA
I
O
=24 mA
I
O
= 0 or 3.6V
V
I
VI=0.58 V
=1.07 V
V
I
=0.7 V
V
I
=1.7 V
V
I
=0.8 V
V
I
=2 V
V
I
= 0 to 3.6V
V
I
or VO= 3.6V1020µA
I
or V
I=VIH
VO= 0 to V
IL
CC
1.21.2
2.02.0
1.71.7
2.22.2
2.42.4
2.02.0
0.20.2V
0.450.45
0.40.4
0.70.7
0.40.4
0.550.55
± 5± 5µA
+25+25
-25-25
+45+45
-45-45
+75+75
-75-75
± 500± 500
± 5± 10µA
2040µA
I
=0
O
Unit
V
V
µA
4/11
Page 5
AC ELECTRICAL CHARACTERISTICS
Test ConditionValue
74ALVCH16373
SymbolParameter
t
PLHtPHL
t
PLHtPHL
t
PZLtPZH
t
PLZtPHZ
Propagation Delay
Time Dn to Qn
Propagation Delay
Time LE to Qn
Output Enable Time1.65 to 1.953010002.018.518.5
Output Disable Time 1.65 to 1.953010002.01717
t
Setup TIme, HIGH or
s
LOW level Dn to LE
t
Hold Time High or
h
LOW level Dn to LE
t
LE Pulse Width,
w
HIGH
V
CC
(V)
C
(pF)
R
L
(Ω)
= t
t
L
s
(ns)
-40 to 85 °C-55 to 125 °C
r
Min.Max.Min.Max.
1.65 to 1.953010002.016.516.5
2.3 to 2.7305002.014.514.5
2.7505002.514.314.3
3.0 to 3.6505002.513.613.6
1.65 to 1.953010002.017.017.0
2.3 to 2.7305002.014.914.9
2.7505002.514.614.6
3.0 to 3.6505002.513.913.9
2.3to2.7305002.01616
2.7505002.515.715.7
3.0 to 3.6505002.514.714.7
2.3 to 2.7305002.015.115.1
2.7505002.514.514.5
3.0 to 3.6505002.514.114.1
1.65 to 1.953010002.011
2.3 to 2.7305002.011
2.7505002.511
3.0 to 3.6505002.51.11.1
1.65 to 1.953010002.01.51.5
2.3 to 2.7305002.01.51.5
2.7505002.51.71.7
3.0 to 3.6505002.51.41.4
1.65 to 1.953010002.044
2.3 to 2.7305002.03.33.3
2.7505002.53.33.3
3.0 to 3.6505002.53.33.3
Unit
ns
ns
ns
ns
ns
ns
ns
5/11
Page 6
74ALVCH16373
CAPACITIVE CHARACTERISTICS
Test ConditionValue
=25°C
SymbolParameter
V
CC
(V)
C
C
C
OUT
C
C
1) CPDis defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
circuit)
Input Capacitance Control
IN
Inputs
Input Capacitance Data Inputs
IN
Output Capacitance
Power Dissipation Capacitance
PD
Output enabled (note 1)
Power Dissipation Capacitance
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mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
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