74F385 Datasheet, PDF (5/6 Pages) NXP Semiconductors – Quad serial adder/subtractor

Philips Semiconductors
Quad serial adder/subtractor
Product specification
74F385
AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
f_MAX
t_PLH
t_PHL
t_PLH
Maximum clock frequency
Propagation delay,
Cn to Fn
Propagation delay, MR to Fn
AC SETUP REQUIREMENTS
SYMBOL
PARAMETER
t_s (H)
t_s (L)
t_h (H)
t_h (L)
t_s (H)
t_s (L)
t_w (L)
t_REC (L)
Setup time, High or Low
An, Bn or Sn to CP
Hold time, High or Low
An, Bn or Sn to CP
CP Pulse width
High or Low
MR Pulse width
Low
Recovery time
MR to CP
TEST
CONDITION
Waveform 1
Waveform 1
Waveform 2
LIMITS
T_amb = +25°C
V_CC = +5.0V
C_L = 50pF, R_L = 500Ω
MIN TYP MAX
T_amb = 0°C to +70°C
V_CC = +5.0V ± 10%
C_L = 50pF, R_L = 500Ω
MIN
MAX
105 140
90
3.0
5.0
8.0
2.5
9.0
3.5
5.5
9.0
3.5
10.0
4.0
6.5
9.5
4.0
10.5
UNIT
MHz
ns
ns
TEST
CONDITION
Waveform 3
Waveform 3
Waveform 2
Waveform 2
LIMITS
T_amb = +25°C
V_CC = +5.0V
C_L = 50pF, R_L = 500Ω
T_amb = 0°C to +70°C
V_CC = +5.0V ± 10%
C_L = 50pF, R_L = 500Ω
MIN TYP MAX
MIN
MAX
12.0
12.0
12.0
12.0
0
0
0
0
6.0
6.0
6.0
6.0
UNIT
ns
ns
ns
6.0
6.0
ns
Waveform 2
8.5
9.5
ns
AC WAVEFORMS
For all waveforms, V_M = 1.5V.
The shaded areas indicate when the input is permitted to change for predictable output performances.
CP _VM
1/f_max
t_w(H)
t_PHL
V_M
t_w(L)
V_M
t_PLH
MR
V_M
V_M
t_W (L)
t_REC
CP
V_M
Fn
V_M
V_M
SF00932
Waveform 1. Propagation Delay, Clock Input to Output,
Clock Pulse Width, and Maximum Clock Frequency
t_PHL
Fn
V_M
Waveform 2. Master Reset Pulse Width,
Master Reset to Output Delay and
Master Reset to Clock Recovery Time
SF00933
An, Bn, Sn
V_M
V_M
t_s(H) t_h(H)
V_M
t_s(L)
V_M
t_h(L)
CP
V_M
V_M
SF00934
Waveform 3. Data and Select Setup and Hold Times
1989 Sep 20
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