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| 74ALVT162821 Datasheet, PDF (8/12 Pages) NXP Semiconductors – 2.5V/3.3V 20-bit bus-interface D-type flip-flop; positive-edge trigger with 30ohm termination resistors 3-State | |||
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Philips Semiconductors
2.5V/3.3V 20-bit bus-interface D-type flip-flop;
positive-edge trigger with 30W termination resistors (3-State)
Product specification
74ALVT162821
AC CHARACTERISTICS (2.5V "0.2V RANGE)
GND = 0V; tR = tF = 2.5ns; CL = 50pF; RL = 500â¦; Tamb = â40°C to +85°C.
SYMBOL
PARAMETER
WAVEFORM
fMAX
Maximum clock frequency
1
tPLH
Propagation delay
tPHL
nCP to nQx
1
tPZH
Output enable time
3
tPZL
to High and Low level
4
tPHZ
Output disable time
3
tPLZ
from High and Low level
4
NOTE:
1. All typical values are at VCC = 3.3V and Tamb = 25°C.
AC SETUP REQUIREMENTS (2.5V "0.2V RANGE)
GND = 0V, tR = tF = 2.5ns, CL = 50pF, RL = 500â¦
SYMBOL
PARAMETER
WAVEFORM
ts(H)
ts(L)
Setup time, High or Low
nDx to nCP
1
th(H)
th(L)
Hold time, High or Low
nDx to nCP
2
tw(H)
tw(L)
nCP pulse width
High or Low
2
LIMITS
Tamb = -40 to +85oC
VCC = +2.5V ±0.2V
MIN
TYP
MAX
150
1.0
4.4
7.0
1.0
3.8
6.4
1.5
4.6
7.5
1.0
2.8
4.6
1.5
3.5
5.5
1.0
3.7
5.7
LIMITS
Tamb = -40 to +85oC
VCC = +2.5 ±0.2V
MIN
TYP
1.5
0.1
2.0
0.5
0.3
â0.5
0.5
â0.1
1.5
1.5
UNIT
MHz
ns
ns
ns
UNIT
ns
ns
ns
AC WAVEFORMS
VM = 1.5V at VCC w 3.0V; VM = VCC/2 at VCC v 2.7V
VX = VOL + 0.3V at VCC w 3.0V; VX = VOL + 0.15V at VCC v 2.7V
VY = VOH â 0.3V at VCC w 3.0V; VY = VOH â 0.15V at VCC v 2.7V
1/fMAX
nCP
VM
tw(H)
tPHL
VM
tw(L)
VM
tPLH
nQx
VM
VM
3.0V or VCC
whichever
is less
0V
VOH
VOL
SH00005
Waveform 1. Propagation Delay, Clock Input to Output,
Clock Pulse Width, and Maximum Clock frequency
nDx
CP
VM VM
ts(H) th(H)
VM
VM VM
ts(L) th(L)
VM
3.0V or VCC
whichever
is less
0V
3.0V or VCC
whichever
is less
0V
SH00006
Waveform 2. Data Setup and Hold Times
1998 Oct 02
8
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