HD74HC245FPEL データシートの表示（PDF） - Renesas Electronics

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HD74HC245FPEL

Octal Bus Transceivers (with 3-state outputs)

Renesas Electronics 

HD74HC245

Switching Characteristics

Item

Symbol VCC (V)

Propagation delay tPHL

2.0

time

4.5

6.0

tPLH

2.0

4.5

6.0

Output enable time tZL

2.0

4.5

6.0

tZH

2.0

4.5

6.0

Output disable

time

tLZ

2.0

4.5

6.0

tHZ

2.0

4.5

6.0

Output rise/fall

time

tTLH

2.0

tTHL

4.5

6.0

Input capacitance Cin

—

Ta = 25°C

Min Typ Max

— — 90

— 12 18

— — 15

— — 90

— 10 18

— — 15

— — 150

— 11 30

— — 26

— — 150

— 12 30

— — 26

— — 150

— 16 30

— — 26

— — 150

— 19 30

— — 26

— — 60

— 4 12

— — 10

— 5 10

(CL = 50 pF, Input tr = tf = 6 ns)

Ta = –40 to +85°C

Unit

Min

Max

Test Conditions

—

115 ns

—

23

—

20

—

115 ns

—

23

—

20

—

190 ns

—

38

—

33

—

190 ns

—

38

—

33

—

190 ns

—

38

—

33

—

190 ns

—

38

—

33

—

75

ns

—

15

—

13

—

10

pF

Test Circuit

VCC

VCC

G

Input

Pulse Generator

Zout = 50 Ω

DIR

S1

A1

B1

Output

1 K Ω S2

CL =

50 pF

OPEN

GND

VCC

TEST

tPLH / t PHL

tZH/ t HZ

tZL / t LZ

S2

OPEN

GND

VCC

Note : 1. CL includes probe and jig capacitance.

2. A2–B2, A3–B3, A4–B4, A5–B5, A6–B6, A7–B7, A8–B8 are identical to above load circuit.

3. S1 is a input / output switch.

Rev.2.00 Jan 31, 2006 page 4 of 7

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