TheTTL - Al Kossow's Bitsavers

PAL20L8A, PAL20R4A, PAL20R6A, PAL20R8A
STANDARD HIGH SPEED PAL CIRCUITS
recommended operating conditions
fclock
tw
tsu
th
Clock frequency
Pulse duration, clock
Setup time, input or feedback before OUTClKi
Hold time, input or feedback after OUTClKi
I
I
High
low
M SUFFIX
C SUFFIX
MIN TYP MAX MIN TYP MAX
0 20 0 30
20 15
20 15
30 25
0 0
UNIT
MHz
ns
ns
ns
ns
" CD'
c:
I
."
.,
.,
o
CC
Q)
3
electrical characteristics over recommended free-air operating temperature range
PARAMETER
TEST CONDITIONSt
M SUFFIX
C SUFFIX
MIN TYP* MAX MIN TYP* MAX
VIK Vce = MIN, II = -18 mA -1.5 -1.5
VOH Vce = MIN, 10H = MAX 2.4 3.2 2.4 3.3
VOL Vec = MIN, 10l = MAX 0.25 0.4 0.35 0.5
10ZH
10Zl
II
0, Q outputs 20 20
I/O ports
Vee = MAX, VIH = 2.7 V
100 100
0, Q outputs -20 -20
1/0 ports
Vee = MAX, VIH = 0.4 V
-250 -250
OE Input 0.2 0.2
Vec = MAX, VI = 5.5 V
All others 0.1 0.1
IrH
OE Input 40 40
Vee = MAX, V, = 2.7 V
All others 20 20
III
OE Input -0.4 . -0.4
Vee = MAX, VI = 0.4 V
All others -0.2 -0.2
lo§ Vee = MAX, Vo = 2.25 V -30 -125 -30 -125
ICC
Vce = MAX, VI = a V,
Outputs open, ill at VIH
150 210 150 210
3 tFor conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
Q) tAli typical values are VCC = 5 V, T A = 25 ac.
C'" §The output conditions have been chosen to produce a current that closely approximates one half the true short-circuit current, lOS.
Ci)
r- switching characteristics over recommended operating free~air temperature range (unless otherwise
~ noted)
o·
M SUFFIX C SUFFIX
PARAMETER FROM TO TEST CONDITIONS
UNIT
MIN TYP* MAX MIN TYP* MAX
fmax 20 30 MHz
tpd I, I/O 0,1/0 15 30 15 25 ns
tpd OUTCLKi Q Rl = 500O, 10 20 10 15 ns
ten OE Q Cl = 50 pF 10 25 10 20 ns
tdis OEi Q See Note 2 11 25 11 20 ns
ten 1,1/0 0,1/0 14 30 14 25 ns
tdis 1,1/0 0,110 12 30 12 25 ns
t All typical values are at Vce = 5 V, T A = 25°C.
NOTE 2: load circuits and voltage waveforms are shown in Section 1.
UNIT
V
V
V
I'A
p.A
mA
I'A
mA
mA
mA
3-26 TEXAs •
INSTRUMENTS
POST OFFICE BOX 225012 • DALLAS. TEXAS 75265