PALCE22V10Z-25SC Lattice, PALCE22V10Z-25SC Datasheet - Page 29

• Manufacturer Part Number: PALCE22V10Z-25SC
• Description: SPLD PAL® Family 10 Macro Cells 50MHz EECMOS Technology 5V 24-Pin SOIC
• Manufacturer: Lattice

Specifications of PALCE22V10Z-25SC

• Package: 24SOIC
• Family Name: PAL®
• Number Of Macro Cells: 10
• Maximum Propagation Delay Time: 25 ns
• Typical Operating Supply Voltage: 5 V
• Maximum Internal Frequency: 50 MHz
• Number Of Product Terms Per Macro: 16
• Re-programmability Support: Yes

ROBUSTNESS FEATURES
The PALCE22V10X-X/5 devices have some unique features that make them extremely robust,
especially when operating in high-speed design environments. Pull-up resistors on inputs and I/O
pins cause unconnected pins to default to a known state. Input clamping circuitry limits negative
overshoot, eliminating the possibility of false clocking caused by subsequent ringing. A special
noise filter makes the programming circuitry completely insensitive to any positive overshoot that
has a pulse width of less than about 100 ns for the /5 version.
INPUT/OUTPUT EQUIVALENT SCHEMATICS FOR /5 VERSION DEVICES
Protection
Clamping
ESD
and
> 50 k
V
CC
PALCE22V10 and PALCE22V10Z Families
Programming
Pins only
Provides ESD
Protection and
Clamping
V
CC
Typical Output
Typical Input
V
CC
Programming
Detection
Voltage
> 50 k
V
Circuitry
Preload
CC
Overshoot
Positive
Filter
Feedback
Input
Programming
Circuitry
16564-16
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