HD74HC259 Datasheet, PDF (4/10 Pages) Hitachi Semiconductor – 8-bit Addressable Latch

HD74HC259
Switching Characteristics
Item
Propagation delay
time
Pulse width
Setup time
Hold time
Output rise/fall
time
Input capacitance
Symbol V_CC (V)
t_PHL
2.0
t_PLH
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
t_PHL
2.0
4.5
6.0
t_w
2.0
4.5
6.0
t_su
2.0
4.5
6.0
t_h
2.0
4.5
6.0
t_TLH
2.0
t_THL
4.5
6.0
Cin
—
Ta = 25°C
Min Typ Max
— — 185
— 16 37
— — 31
— — 215
— 20 43
— — 37
— — 200
— 17 40
— — 34
— — 155
— 15 31
— — 26
80 — —
16 6 —
14 — —
100 — —
20 5 —
17 — —
5 ——
5 –1 —
5 ——
— — 75
— 5 15
— — 13
— 5 10
(C_L = 50 pF, Input t_r = t_f = 6 ns)
Ta = –40 to +85°C Unit
Test Conditions
Min
Max
—
230 ns Data to output
—
46
—
39
—
270 ns Latch select to output
—
54
—
46
—
250 ns Enable to output
—
50
—
43
—
195 ns Clear to output
—
39
—
33
100
—
ns Clear, Enable
20
—
17
—
125
—
ns Latch select or data to enable
25
—
21
—
5
—
ns Latch select or data to enable
5
—
5
—
—
95
ns
—
19
—
16
—
10 pF
Test Circuit
VCC
VCC
Input
Pulse Generator
Zout = 50 Ω
G
Clear
Q0 to Q7
A
B
C
D
Output
C_L =
50 pF
Note : 1. C_L includes probe and jig capacitance.
Rev.2.00 Jan 31, 2006 page 4 of 9