TOSHIBA TC7MH573FK Technical data

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC7MH573FK

Octal D-Type Latch with 3-State Output

The TC7MH573FK is an advanced high speed CMOS octal
latch with 3-state output fabricated with silicon gate C
technology.

It achieves the high speed operation similar to equivalent
bipolar schottky TTL while maintaining the CMOS low power
dissipation.

This 8 bit D-type latch is controlled by a latch enable input
(LE) and an output enable input (OE).

When the OE input is high, the eight outputs are in a high
impedance state.

An input protection circuit ensures that 0 to 7 V can be applied
to the input pins without regard to the supply voltage. This
device can be used to interface 5 V to 3 V systems and two supply
systems such as battery back up. This circuit prevents device
destruction due to mismatched supply and input voltages.

Features

2

MOS

Weight: 0.03 g (typ.)

TC7MH573FK

• High speed: tpd = 4.5 ns (typ.) (VCC = 5 V)

• Low power dissipation: I

• High noise immunity: V

• Power down protection is provided on all inputs.

• Balanced propagation delays: t

• Wide operating voltage range: V

• Low noise: V

• Pin and function compatible with 74ALS573

= 1.0 V (max)

OLP

= 4 μA (max) (Ta = 25°C)

CC

NIH

= V

= 28% VCC (min)

NIL

≈ t

pLH

CC (opr)

pHL

= 2~5.5 V

1

2001-10-23

TC7MH573FK

Pin Assignment

OE 1

D0

D1

D2

D3

D4

D5 Q5

D6

D7

10

GND

Truth Table

(top view)

2

3

4

5

6

7

8

9

IEC Logic Symbol

(1)

V

20

CC

Q0

19

Q1

18

Q2

17

Q3

16

Q4

15

14

Q6

13

Q7

12

LE

11

OE

LE

D0

D1

D2

D3

D4

D5

D6

D7

(11)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

EN

C1

1D

(19)

(18)

(17)

(16)

(15)

(14)

(13)

(12)

Q0

Q1

Q2

Q3

Q4

Q5

Q6

Q7

Inputs

OE LE D

H X X Z

L L X Qn

L H L L

L H H H

Outputs

X: Don’t care

Z: High impedance

: Q outputs are latched at the time when the LE input is taken to a low logic level.

Q

n

System Diagram

D1 D2 D3 D4 D5 D6 D7

3

D

Q

4

D

Q

L

5

D

Q

L

6

D

Q

L

LE

11

D0

2

D

L

7

D

Q

L

8

D

Q

L

9

D

Q

L

Q

L

OE

1

19

Q0

18

Q1

17

Q2

16

Q3

15

Q4

2

14

Q5

13

Q6

2001-10-23

12

Q7

Maximum Ratings

Characteristics Symbol Rating Unit

TC7MH573FK

Supply voltage range V

DC input voltage V

DC output voltage V

Input diode current I

Output diode current I

DC output current I

DC VCC/ground current I

Power dissipation P

Storage temperature T

CC

IN

OUT

IK

OK

OUT

CC

D

stg

Recommended Operating Conditions

Characteristics Symbol Rating Unit

Supply voltage V

Input voltage V

Output voltage V

Operating temperature T

Input rise and fall time dt/dv

CC

IN

OUT

opr

−0.5~V

0~100 (V

0~20 (V

−0.5~7.0 V

−0.5~7.0 V

+ 0.5 V

CC

−20 mA

±20 mA

±25 mA

±75 mA

180 mW

−65~150 °C

2.0~5.5 V

0~5.5 V

0~V

CC

−40~85 °C

= 3.3 ± 0.3 V)

CC

= 5 ± 0.5 V)

CC

V

ns/V

3

2001-10-23