Motorola MC74LCX244DW, MC74LCX244SD, MC74LCX244M Datasheet
SEMICONDUCTOR TECHNICAL DATA
#* #!' '!
(%
' #!%"' "$('& " ('$('&
'' #"")%' "
The MC74LCX244 is a high performance, non–inverting octal buffer
operating from a 2.7 to 3.6V supply. High impedance TTL compatible
inputs significantly reduce current loading to input drivers while TTL
compatible outputs offer improved switching noise performance. A V
specification of 5.5V allows MC74LCX244 inputs to be safely driven from
5V devices. The MC74LCX244 is suitable for memory address driving
and all TTL level bus oriented transceiver applications.
Current drive capability is 24mA at the outputs. The Output Enable
(OE
) input, when HIGH, disables the output by placing them in a HIGH Z
condition.
• Designed for 2.7 to 3.6V V
Operation
CC
• 5V Tolerant — Interface Capability With 5V TTL Logic
• Supports Live Insertion and Withdrawal
• I
Specification Guarantees High Impedance When VCC = 0V
OFF
• LVTTL Compatible
• LVCMOS Compatible
• 24mA Balanced Output Sink and Source Capability
• Near Zero Static Supply Current in All Three Logic States (10µA)
Substantially Reduces System Power Requirements
• Latchup Performance Exceeds 500mA
• ESD Performance: Human Body Model >2000V; Machine Model >200V
I
LOW–VOLTAGE CMOS
OCTAL BUFFER
DW SUFFIX
20
1
20
1
20
1
PLASTIC SOIC
CASE 751D–04
M SUFFIX
PLASTIC SOIC EIAJ
CASE 967–01
SD SUFFIX
PLASTIC SSOP
CASE 940C–03
V
2OE
CC
1D0 2O0 1D1 2O1 1D2 2O2 1D3 2O3 GND
1OE
9/95
Motorola, Inc. 1996
Pinout: 20–Lead (Top View)
1O0 2D0 1O1 2D1 1O2 2D2 1O3 2D3
1920 18 17 16 15 14
21 34567
13
8
1
12
20
1
11
DT SUFFIX
PLASTIC TSSOP
CASE 948E–02
PIN NAMES
Pins
9
10
nOE
1Dn, 2Dn
1On, 2On
REV 3
Function
Output Enable Inputs
Data Inputs
3–State Outputs
MC74LCX244
LOGIC DIAGRAM
1
1OE
1D0
1D1
1D2
1D3
2OE
2D0
2D1
2D2
2D3
19
17
15
13
11
2
4
6
8
18
16
14
12
1O0
1O1
1O2
1O3
3
2O0
5
2O1
7
2O2
9
2O3
INPUTS OUTPUTS
1OE
2OE
L L L
L H H
H X Z
H = High Voltage Level; L = Low Voltage Level; Z = High
Impedance State; X = High or Low V oltage Level and Transitions
Are Acceptable, for ICC reasons, DO NOT FLOAT Inputs
MOTOROLA LCX DATA
1Dn
2Dn
1On, 2On
2
BR1339 — REV 3
MC74LCX244
ABSOLUTE MAXIMUM RATINGS*
Symbol Parameter Value Condition Unit
V
CC
V
I
V
O
I
IK
I
OK
I
O
I
CC
I
GND
T
STG
* Absolute maximum continuous ratings are those values beyond which damage to the device may occur. Exposure to these conditions or conditions
beyond those indicated may adversely affect device reliability. Functional operation under absolute–maximum–rated conditions is not implied.
1. Output in HIGH or LOW State. IO absolute maximum rating must be observed.
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Min Typ Max Unit
V
CC
V
I
V
O
I
OH
I
OL
I
OH
I
OL
T
A
∆t/∆V Input Transition Rise or Fall Rate, VIN from 0.8V to 2.0V ,
DC Supply Voltage –0.5 to +7.0 V
DC Input Voltage –0.5 ≤ VI ≤ +7.0 V
DC Output Voltage –0.5 ≤ VO ≤ +7.0 Output in 3–State V
–0.5 ≤ VO ≤ VCC + 0.5 Note 1. V
DC Input Diode Current –50 VI < GND mA
DC Output Diode Current –50 VO < GND mA
+50 VO > V
DC Output Source/Sink Current ±50 mA
DC Supply Current Per Supply Pin ±100 mA
DC Ground Current Per Ground Pin ±100 mA
Storage Temperature Range –65 to +150 °C
Supply Voltage Operating
Data Retention Only
Input Voltage 0 5.5 V
Output Voltage (HIGH or LOW State)
(3–State)
HIGH Level Output Current, VCC = 3.0V – 3.6V –24 mA
LOW Level Output Current, VCC = 3.0V – 3.6V 24 mA
HIGH Level Output Current, VCC = 2.7V – 3.0V –12 mA
LOW Level Output Current, VCC = 2.7V – 3.0V 12 mA
Operating Free–Air Temperature –40 +85 °C
VCC = 3.0V
2.0
1.5
0
0
0 10 ns/V
3.3
3.3
CC
V
3.6
3.6
CC
5.5
mA
V
V
DC ELECTRICAL CHARACTERISTICS
TA = –40°C to +85°C
Symbol Characteristic Condition Min Max Unit
V
IH
V
IL
V
OH
V
OL
2. These values of VI are used to test DC electrical characteristics only.
LCX DATA
BR1339 — REV 3
HIGH Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 2.0 V
LOW Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 0.8 V
HIGH Level Output Voltage 2.7V ≤ VCC ≤ 3.6V; IOH = –100µA VCC– 0.2 V
VCC = 2.7V; IOH = –12mA 2.2
VCC = 3.0V; IOH = –18mA 2.4
VCC = 3.0V; IOH = –24mA 2.2
LOW Level Output Voltage 2.7V ≤ VCC ≤ 3.6V; IOL = 100µA 0.2 V
VCC = 2.7V; IOL= 12mA 0.4
VCC = 3.0V; IOL = 16mA 0.4
VCC = 3.0V; IOL = 24mA 0.55
3 MOTOROLA
Loading...