Motorola MC74LCX125M, MC74LCX125DT, MC74LCX125SD Datasheet
SEMICONDUCTOR TECHNICAL DATA
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The MC74LCX125 is a high performance, non–inverting quad 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 MC74LCX125 inputs to be safely driven from
5V devices. The MC74LCX125 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
n) inputs, when HIGH, disable the outputs by placing them in a HIGH
Z condition.
I
LOW–VOLTAGE CMOS
QUAD BUFFER
• 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
Pinout: 14–Lead (Top View)
3D3 O3OE2D2 O2
1314 12 11 10 9 8
21 34567
0D0 O0OE1 D1 O1 GND
LOGIC DIAGRAM
10
OE2
3
O0
6
O1
D2
OE3
D3
9
13
12
8
O2
11
O3
OE0
D0
OE1
D1
VCCOE
OE
1
2
4
5
D SUFFIX
14
1
14
1
14
1
14
1
PLASTIC SOIC
CASE 751A–03
M SUFFIX
PLASTIC SOIC EIAJ
CASE 965–01
SD SUFFIX
PLASTIC SSOP
CASE 940A–03
DT SUFFIX
PLASTIC TSSOP
CASE 948G–01
PIN NAMES
Pins
OE
Dn
On
n
Function
Output Enable Inputs
Data Inputs
3–State Outputs
FUNCTION TABLE
INPUTS OUTPUTS
OEn Dn On
L
L
H
H = High Voltage Level; L = Low V oltage Level; Z = High Impedance State; X = High or Low Voltage Level and T ransitions Are
Acceptable, for ICC reasons, DO NOT FLOAT Inputs
L
H
X
L
H
Z
11/96
Motorola, Inc. 1996
1
REV 1
MC74LCX125
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.
MOTOROLA LCX DATA
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
2
BR1339 — REV 3
MC74LCX125
DC ELECTRICAL CHARACTERISTICS (continued)
TA = –40°C to +85°C
Symbol Characteristic Condition Min Max Unit
I
I
I
OZ
I
OFF
I
CC
∆I
CC
AC CHARACTERISTICS (tR = tF = 2.5ns; CL = 50pF; RL = 500Ω)
Symbol Parameter Waveform Min Max Max Unit
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
OSHL
t
OSLH
3. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device.
The specification applies to any outputs switching in the same direction, either HIGH–to–LOW (t
guaranteed by design.
Input Leakage Current 2.7V ≤ VCC ≤ 3.6V; 0V ≤ VI ≤ 5.5V ±5.0 µA
3–State Output Current 2.7 ≤ VCC ≤ 3.6V; 0V ≤ VO ≤ 5.5V;
Power–Off Leakage Current VCC = 0V; VI or VO = 5.5V 10 µA
Quiescent Supply Current
Increase in ICC per Input 2.7 ≤ VCC ≤ 3.6V; VIH = VCC – 0.6V 500 µA
Propagation Delay
Input to Output
Output Enable Time to
High and Low Level
Output Disable Time From
High and Low Level
Output–to–Output Skew
(Note 3.)
2.7 ≤ VCC ≤ 3.6V; VI = GND or V
2.7 ≤ VCC ≤ 3.6V; 3.6 ≤ VI or VO ≤ 5.5V ±10 µA
VI = VIH or V
1 1.5
2 1.5
2 1.5
IL
VCC = 3.0V to 3.6V VCC = 2.7V
1.5
1.5
1.5
CC
Limits
TA = –40°C to +85°C
6.0
6.0
7.0
7.0
6.0
6.0
1.0
1.0
) or LOW–to–HIGH (t
OSHL
±5.0 µA
10 µA
6.5
6.5
8.0
8.0
7.0
7.0
); parameter
OSLH
ns
ns
ns
ns
DYNAMIC SWITCHING CHARACTERISTICS
TA = +25°C
Symbol Characteristic Condition Min Typ Max Unit
V
OLP
V
OLV
4. Number of outputs defined as “n”. Measured with “n–1” outputs switching from HIGH–to–LOW or LOW–to–HIGH. The remaining output is
measured in the LOW state.
Dynamic LOW Peak Voltage (Note 4.) VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V 0.8 V
Dynamic LOW Valley Voltage (Note 4.) VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V 0.8 V
CAPACITIVE CHARACTERISTICS
Symbol Parameter Condition Typical Unit
C
IN
C
OUT
C
PD
LCX DATA
BR1339 — REV 3
Input Capacitance VCC = 3.3V, VI = 0V or V
Output Capacitance VCC = 3.3V, VI = 0V or V
Power Dissipation Capacitance 10MHz, VCC = 3.3V, VI = 0V or V
3 MOTOROLA
CC
CC
CC
7 pF
8 pF
25 pF
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