74ALVCH16821DGG Ver la hoja de datos (PDF) - Philips Electronics
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74ALVCH16821DGG
Philips Electronics
74ALVCH16821DGG Datasheet PDF : 12 Pages
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Philips Semiconductors
20-bit bus-interface D-type flip-flop;
positive-edge trigger (3-State)
Product specification
74ALVCH16821
AC CHARACTERISTICS FOR VCC = 2.3V TO 2.7V RANGE
GND = 0V; tr = tf ≤ 2.0ns; CL = 30pF
SYMBOL
PARAMETER
WAVEFORM
tPLH/tPHL
Propagation delay
nCP to nQn
1, 4
tPZH/tPZL
3-State output enable time
nOEn to nQn
2, 4
tPHZ/tPLZ
3-State output disable time
nOEn to nQn
2, 4
tW
nCP pulse width HIGH or LOW
3, 4
tSU
Set up time nDn to nCP
3, 4
th
Hold time nDn to nCP
3, 4
Fmax
Maximum clock pulse frequency
1, 4
NOTE:
1. All typical values are at VCC = 2.5V and Tamb = 25°C.
LIMITS
VCC = 2.5V ± 0.2V
MIN
TYP1
MAX
1.0
2.6
5.8
1.0
2.8
6.6
1.0
2.2
5.7
3.0
1.8
1.4
0.3
0.4
0.0
150
250
AC CHARACTERISTICS FOR VCC = 3.0V TO 3.6V RANGE AND VCC = 2.7V
GND = 0V; tr = tf ≤ 2.5ns; CL = 50pF
LIMITS
SYMBOL
PARAMETER
WAVEFORM
VCC = 3.3 ± 0.3V
MIN
TYP1 MAX
MIN
tPHL/tPLH
Propagation delay
nCP to nQn
1, 4
1.0
2.5
4.5
1.0
tPZH/tPZL
3-State output enable time
nOEn to nQn
2, 4
1.0
2.3
5.1
1.0
tPHZ/tPLZ
3-State output disable time
nOEn to nQn
2, 4
1.0
2.8
4.6
1.0
tW
nCP pulse width HIGH or
LOW
3, 4
3.3
0.2
3.3
tSU
Set up time nDn to nCP
3, 4
1.0
0.2
1.2
th
Hold time nDn to nCP
3, 4
0.8
0.4
0.6
Fmax
Maximum clock pulse
frequency
1, 4
150
350
150
NOTES:
1. All typical values are at Tamb = 25°C.
VCC = 2.7V
TYP1 MAX
2.8
5.3
3.2
6.2
3.1
5.0
1.7
0.3
–0.3
300
UNIT
ns
ns
ns
ns
ns
ns
MHz
UNIT
ns
ns
ns
ns
ns
ns
MHz
1998 May 29
7
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