Features
• Industry-standard Architecture
– Emulates Many 24-pin PALs®
– Low-cost Easy-to-use Software Tools
• High-speed Electrically-erasable Programmable Logic Devices
– 7.5 ns Maximum Pin-to-pin Delay
• Several Power Saving Options
Device
ICC, Standby
50 mA
ICC, Active
55 mA
ATF20V8B
ATF20V8BQ
ATF20V8BQL
High-
35 mA
40 mA
5 mA
20 mA
performance
EE PLD
• CMOS and TTL Compatible Inputs and Outputs
• Input and I/O Pull-up Resistors
• Advanced Flash Technology
– Reprogrammable
– 100% Tested
ATF20V8B
• High-reliability CMOS Process
– 20 Year Data Retention
ATF20V8BQ
ATF20V8BQL
– 100 Erase/Write Cycles
– 2,000V ESD Protection
– 200 mA Latchup Immunity
• Commercial and Industrial Temperature Ranges
• Dual-in-line and Surface Mount Packages in Standard Pinouts
• PCI-Compliant
• Green Package Options (Pb/Halide-free/RoHS Complant) Available
Block Diagram
TSSOP
Pin Configurations
All Pinouts Top View
CLK/IN
IN
1
24
23
22
21
20
19
18
17
16
15
14
13
VCC
IN
2
IN
3
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
IN
IN
4
Pin Name Function
IN
5
IN
6
CLK
I
Clock
IN
7
IN
8
IN
9
Logic Inputs
IN
10
11
12
IN
I/O
OE
*
Bi-directional Buffers
Output Enable
No Internal Connection
+5V Supply
GND
OE/IN
DIP/SOIC
PLCC
CLK/IN
IN
1
2
3
4
5
6
7
8
9
24 VCC
23 IN
VCC
IN
22 I/O
21 I/O
20 I/O
19 I/O
18 I/O
17 I/O
16 I/O
15 I/O
14 IN
IN
IN
IN
*
5
6
7
8
9
25 I/O
24 I/O
23 I/O
IN
IN
IN
22
*
IN
IN
21 I/O
20 I/O
19 I/O
IN
IN 10
IN 11
IN
Rev. 0407J–07/06
IN 10
IN 11
GND 12
13 OE/IN
1