ETC PI74LCX373S

PI74LCX373
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Fast CMOS 3.3V 8-Bit
Transparent Latch
Product Features
Product Description
• Functionally compatible with FCT3, LVT, and 74
series 373 families of products
• Tri-State outputs
• 5V Tolerant inputs and outputs
• 2.0V-3.6V VCC supply operation
• Balanced sink and source output drives (24 mA)
• Low ground bounce outputs
• Supports live insertion
• ESD Protection exceeds 2000V, Human Body Model
200V, Machine Model
• Packages available:
– 20-pin 209-mil wide plastic SSOP (H)
– 20-pin 173-mil wide plastic TSSOP (L)
– 20-pin 150-mil wide plastic QSOP (Q)
– 20-pin 300-mil wide plastic SOIC (S)
Pericom Semiconductor’s PI74LCX series of logic circuits are produced using the Company’s advanced 0.6 micron CMOS technology,
achieving industry leading speed grades.
The PI74LCX373 is an 8-bit transparent latch designed with
3-state outputs and is intended for bus oriented applications. When
Latch Enable (LE) is HIGH, the flip-flops appear transparent to the
data. The data that meets the set-up time when LE is LOW is latched.
When OE is HIGH, the bus output is in the high impedance state.
The PI74LCX373 can be driven from either 3.3V or 5.0V devices
allowing this device to be used as a translator in a mixed
3.3/5.0V system.
Logic Block Diagram
Product Pin Configuration
1
20
2
19
3
18
20-Pin
4
17
H, L,
5
16
Q, S
6
15
7
14
8
13
9
12
10
11
OE
LE
D0
D
O0
O
G
TO 7 OTHER CHANNELS
Truth Table(1)
Product Pin Description
Inputs
Outputs
Pin Name
Description
DN
LE
OE
ON
OE
Output Enable Input (Active LOW)
H
H
L
H
LE
Latch Enable Input (Active HIGH)
L
H
L
L
D0-D7
Data Inputs
X
X
H
Z
O0-O7
3-State Outputs
X
L
L
O0
GND
Ground
VCC
Power
Note:
1. H = High Voltage Level, X = Don’t Care,
L = Low Voltage Level, Z = High Impedance
1
PS2100A 02/10/97
PI74LCX373
3.3V
8-BIT
TRANSPARENT
LATCH
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Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ............................................................. –65°C to +150°C
Ambient Temperature with Power Applied ............................ –40°C to +85°C
Supply Voltage to Ground Potential (Inputs & Vcc Only) ...... –0.5V to +7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only) .. –0.5V to +7.0V
DC Input Voltage .................................................................... –0.5V to +7.0V
DC Output Current .............................................................................. 120 mA
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions
above those indicated in the operational
sections of this specification is not implied. Exposure
to absolute maximum rating conditions for extended
periods may affect reliability.
Power Dissipation .................................................................................... 1.0W
Recommended Operating Conditions
Symbol
VCC
Parameter
Supply Voltage
VI
Input Voltage
VO
Output Voltage
IOH/IOL
TA
∆t/∆V
Output Current
Min.
Max.
Operating
2.0
3.6
Data Retention
1.5
3.6
0
5.5
HIGH or LOW State
0
VCC
TRI-State
0
5.5
VCC = 3.0V-3.6V

±24
VCC = 2.7V

±12
−40
+85
°C
0
10
ns/V
Free-Air Operating Temperature
Input Edge Rate
V = 0.8V-2.0V, VCC = 3.0V
2
Units
V
mA
PS2100A 02/10/97
PI74LCX373
3.3V
8-BIT
TRANSPARENT
LATCH
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DC Electrical Characteristics (Over the Operating Range, TA = −40°C to +85°C, VCC = 2.7V to 3.6V)
Description
Test Conditions(1)
VIH
Input HIGH Voltage
VIL
VOH
Parameters
VOL
Min.
Typ(2)
Max.
Guaranteed Logic HIGH Level
2.0
—
—
Input LOW Voltage
Guaranteed Logic LOW Level
—
—
0.8
Output HIGH Voltage
VCC = 2.7-3.6
IOH = –0.1mA
VCC-0.2
—
—
VCC = 2.7
IOH = –12mA
2.2
—
—
VCC = 3.0
IOH = –18mA
2.4
—
—
IOH = –24mA
2.2
—
—
VCC = 2.7-3.6
IOL = 0.1mA
—
—
0.2
VCC = 2.7
IOL = 12mA
—
—
0.4
VCC = 3.0
IOL = 16mA
—
—
0.4
IOL = 24mA
—
—
0.55
—
−0.7
−1.2
Output LOW Voltage
Units
V
VIK
Clamp Diode Voltage
VCC = Min., IIN = –18mA
II
Input Leakage Current
0 ≤ VI ≤ 5.5V
Vcc = 2.7-3.6
—
—
±5
IOZ
Tri-State Output Leakage
0 ≤ VO ≤ 5.5V
VI = VIH or VIL
VCC = 2.7-3.6
—
—
±5
IOFF
Power Down Disable
VCC = 0V, VIN or VOUT ≤ 5.5V
—
—
10
ICC
Quiescent Power Supply
Current
VCC = Max.
VIN = GND or VCC

0.1
10
∆ICC
Quiescent Power Supply
Current
TTL Inputs HIGH
VCC = Max.
VIN = VCC – 0.6V(3)


500
µA
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 3.3V, +25°C ambient.
3. Per TTL driven input; all other inputs at Vcc or GND.
Capacitance
Parameters
Description
Test Conditions
Input Capacitance
VCC = Open, VI = 0V or VCC
7
COUT
Output Capacitance
VCC = 3.3V, VI = 0V or VCC
8
CPD
Power Dissipation Capacitance
VCC = 3.3V, VI = 0V or VCC, F = 10 MHz
25
CIN
3
Typ.
Units
pF
PS2100A 02/10/97
PI74LCX373
3.3V
8-BIT
TRANSPARENT
LATCH
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Switching Characteristics over Operating Range
VCC = 3.3V ± 0.3V
Parameters Description
VCC = 2.7V
Conditions
Min.
Max.
Min.
Max.
CL = 50pF
RL = 500Ω
1.5
8.0
1.5
9.0
tPLH
tPHL
Propagation Delay
DX to OX
tPLH
tPHL
Propagation Delay
LE to OX
1.5
8.5
1.5
9.5
tPZH
tPZL
Output Enable time
OE to Ox
1.5
8.5
1.5
9.5
tPHZ
tPLZ
Output Disable Time
OE to Ox
1.5
7.5
1.5
8.5
tSU
Setup Time HIGH
or LOW, Dx to LE
2.5

2.5

tH
Hold Time HIGH
or LOW, Dx to LE
1.5

1.5

tW
LE Pulse Width HIGH
3.3

3.3

Output Skew(1)

1.0


tSK(O)
Units
ns
Note:
1. Skew between any two outputs, of the same package, switching in the same direction.
Dynamic Switching Characteristics (TA = +25°C)
Description
Test Conditions(1)
VOLP
Dynamic LOW Peak Voltage
VCC = 3.3V, CL = 50 pF
VIH = 3.3V, VIL = 0V
VOLV
Dynamic LOW Valley Voltage
VCC = 3.3V, CL = 50 pF
VIH = 3.3V, VIL = 0V
Parameters
Typ.
Units
0.8
V
Note:
1. Measured with n–1 outputs switching from High-to-Low or Low-to-High. The remaining output is measured in the LOW state.
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
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PS2100A 02/10/97