TheTTL - Al Kossow's Bitsavers

PAL20L8A·2, PAL20R4A·2, PAL20R6A·2, PAL20R8A·2
STANDARD HIGH SPEED HALF·POWER PAL CIRCUITS
recommended operating conditions
M SUFFIX
C SUFFIX
MIN TYP MAX MIN TYP MAX
UNIT
fclock Clock frequency 0 18 0 18 MHz
tw Pulse duration, clock I
High ns
I Low
ns
tsu Setup time, input or feedback before OUTCLKl ns
th Hold time, input or feedback after OUTCLKt ns
electrical characteristics over recommended free·air operating temperature range
PARAMETER
TEST CONDITIONst
M SUFFIX
C SUFFIX
MIN TYP* MAX MIN TYP* MAX
VIK VCC = MIN, II = -18 mA -1.5 -1.5 V
VOH VCC = MIN, 10H = MAX 2.4 3.2 2.4 3.3 V
VOL VCC = MIN, 10L = MAX 0.25 0.4 0.35 0.5 V
0, Q outputs 20 20
10ZH
VCC = MAX, VIH = 2.7 V
p,A
I/O ports
100 100
10ZL
0, Q outputs -20 -20
VCC = MAX, VIH = 0.4 V
I/O ports
-250 -250
OE Input 0.2 0.2
II VCC = MAX, VI = 5.5 V mA
All others 0.1 0.1
IIH
OE Input 40 40
VCC = MAX, VI = 2.7 V
All others
20 20
OE Input -0.4 -0.4
IlL VCC = MAX, VI = 0.4 V mA
All others -0.2 -0.2
10§ VCC = MAX, Vo = 2.25 V -30 -125 -30 -125 mA
ICC
VCC = MAX, VI = 0 V,
Outputs open, OE at VIH
UNIT
p,A
p,A
75 100 75 100 mA
tFor conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
tAli typical values are VCC = 5 V, T A = 25°C.
§The output conditions have been chosen to produce a current that closely approximates one half the true short-circuit current, lOS.
switching characteristics over recommended operating free-air temperature range (unless otherwise
noted)
M SUFFIX
C SUFFIX
PARAMETER FROM TO TEST CONDITIONS
UNIT
MIN TYP* MAX MIN TYP* MAX
f max 18 18 MHz
tpd 1,1/0 0,1/0 25 25 ns
tpd OUTCLKl Q
RL = 500 D, 20 20 ns
ten OE Q CL = 50 pF, 15 15 ns
tdis OEl Q See Note 2 12 12 ns
ten 1,1/0 0,1/0 25 25 ns
tdis 1,1/0 0,1/0 20 20 ns
tAli typical values are at VCC = 5 V, TA = 25°C.
NOTE 2: Load circuits and voltage waveforms are shown in Section 1.
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PRODUCT PREVIEW
This page contains Information on a
product under development. Texas
Instruments ,eserves the right to
change or discontinue this product
without notice.
TEXAS ~
INSTRUMENTS
POST OFFICE BOX 225012 • DALLAS. TEXAS 75265
3-27