74ALVCH16843 查看數據表（PDF） - Philips Electronics
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74ALVCH16843 Datasheet PDF : 12 Pages
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Philips Semiconductors
18-bit bus interface D-type latch (3-State)
Product specification
74ALVCH16843
AC CHARACTERISTICS FOR VCC = 2.3V TO 2.7V RANGE
GND = 0V; tr = tf ≤ 2.0ns; CL = 30pF
SYMBOL
PARAMETER
WAVEFORM
Propagation delay
nDn to nQn
1, 6
Propagation delay
nLE to nQn
2, 6
tPHL/tPLH
Propagation delay
nPRE to nQn
1, 6
Propagation delay
nCLR to nQn
1, 6
tPZH/tPZL
3-State output enable time
nOE to nQn
5, 6
tPHZ/tPLZ
3-State output disable time
nOE to nQn
5, 6
tSU
Set-up time nDn to nLE
3, 6
th
Hold time nDn to nLE
3, 6
nLE pulse width HIGH
2, 6
tW
nPRE pulse width LOW
4, 6
nCLR pulse width LOW
4, 6
Recovery time nPRE to nLE
4, 6
tREM
Recovery time nCLR to nLE
4, 6
NOTE:
1. All typical values are at VCC = 3.3V and Tamb = 25°C.
LIMITS
VCC = 2.3 to 2.7V
MIN
TYP1
MAX
1.0
2.2
4.3
1.0
2.3
4.6
1.0
2.5
4.8
1.0
2.5
4.8
1.0
2.8
5.8
1.1
2.2
4.3
0.5
–0.1
–
0.9
0.5
–
1.5
0.5
–
1.5
0.5
–
1.5
0.5
–
0.5
1.1
–
0.5
1.0
–
UNIT
ns
ns
ns
ns
ns
ns
ns
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, 2 MAX
Propagation delay
nDn to nQn
1, 6
1.0
2.1
3.5
tPHL/tPLH
Propagation delay
nLE to nQn
Propagation delay
nPRE to nQn
2, 6
1.0
2.0
3.5
1, 6
1.0
2.2
3.8
Propagation delay
nCLR to nQn
1, 6
1.0
2.3
3.9
tPZH/tPZL
3-State output enable time
nOE to nQn
5, 6
1.0
2.5
4.4
tPHZ/tPLZ
3-State output disable time
nOE to nQn
5, 6
1.3
2.6
4.0
tSU
Set-up time nDn to nLE
th
Hold time nDn to nLE
nLE pulse width HIGH
3, 6
0.5
0.0
–
3, 6
0.9
0.5
–
2, 6
1.5
0.5
–
tW
nPRE pulse width LOW
nCLR pulse width LOW
4, 6
1.5
0.5
–
4, 6
1.5
0.5
–
tREM
Recovery time nPRE to nLE
Recovery time nCLR to nLE
4, 6
1.0
0.4
–
4, 6
0.8
0.2
–
NOTES:
1. All typical values are measured Tamb = 25°C.
2. Typical value is measured at VCC = 3.3V
LIMITS
VCC = 2.7V
MIN TYP1 MAX
1.0
2.3
4.0
UNIT
1.0
2.1
3.9
ns
1.0
2.6
4.5
1.0
2.5
4.3
1.0
3.0
5.3
ns
1.3
2.8
4.4
ns
0.5
–0.3
–
ns
0.9
0.5
–
ns
1.5
0.5
–
1.5
0.6
–
ns
1.5
0.5
–
0.8
–0.2
–
ns
0.6
–0.4
–
1998 Aug 04
7
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